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Polymeric Electrolyte For Secondary Battery And Lithium Secondary Battery Comprising Same

Abstract: The present invention relates to a polymeric electrolyte for a secondary battery and a lithium secondary battery comprising the same. More specifically, the present invention relates to a polymeric electrolyte for a secondary battery, which comprises a polymer and an electron acceptor having at least one double bond as a dopant, such that mechanical properties, ionic conductivity, and electrical conductivity are improved; and a lithium secondary battery comprising the same, which has enhanced electrochemical stability under high temperature and high voltage.

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Patent Information

Application #
Filing Date
26 December 2019
Publication Number
08/2020
Publication Type
INA
Invention Field
POLYMER TECHNOLOGY
Status
Email
Parent Application
Patent Number
Legal Status
Grant Date
2022-09-30
Renewal Date

Applicants

LG CHEM, LTD.
128, Yeoui-daero, Yeongdeungpo-gu, Seoul 07336

Inventors

1. PARK, Sol Ji
LG Chem Research Park, 188, Munji-ro, Yuseong-gu, Daejeon 34122
2. AHN, Kyoung Ho
LG Chem Research Park, 188, Munji-ro, Yuseong-gu, Daejeon 34122
3. KIM, Young Jea
LG Chem Research Park, 188, Munji-ro, Yuseong-gu, Daejeon 34122
4. JANG, Yong Jin
LG Chem Research Park, 188, Munji-ro, Yuseong-gu, Daejeon 34122
5. HAN, Joong Jin
LG Chem Research Park, 188, Munji-ro, Yuseong-gu, Daejeon 34122
6. LEE, Chul Haeng
LG Chem Research Park, 188, Munji-ro, Yuseong-gu, Daejeon 34122

Specification

Art [1]Mutual citations and related application (s) [2]This application claims the benefit of priority based on the date of Korea Patent Application No. 10-2017-0086056 06 years 07 January 2017, and all information disclosed in the literature of the Korea patent application are included as part of the specification. [3] [4] Art [5] The present invention relates to a rechargeable lithium battery including the electrolyte, and this polymer secondary battery. BACKGROUND [6] As the electrical, electronics, communications and computer industries have developed rapidly and the demand for high performance, high stability of the secondary battery increases gradually. Specifically, the thinning and miniaturization of the core part of the lithium secondary battery in the art has been required in accordance with these electronic (communication) miniaturization of the device, light-weight trends. [7] Lithium secondary batteries may be classified according to the electrolytes that are applied to the lithium ion battery and lithium polymer battery using a polymer electrolyte using a liquid electrolyte. [8] For a lithium ion battery, the advantage of high capacity, but because of the use, and a liquid electrolyte containing a lithium salt is a risk of leakage and explosion, there is a disadvantage due to the fallback cell design becomes complicated for it. [9] In the case of a lithium polymer battery, because of the flexibility and at the same time improved reliability because it uses a solid polymer electrolyte or an electrolyte-containing gel polymer electrolyte as an electrolyte, it can be developed in various forms, such as small or thin film type. In particular, when using the polymer gel electrolyte, it is possible to reduce the number of components used in the manufacture of battery of the lithium secondary battery can be expected cost savings. [10] However, in the case of the polymer electrolyte has a problem that is not suitable for commercialization because they represent a much lower ion conductivity than liquid electrolytes. [11] For example, in the case of polyethylene oxide (polyethylene oxide) it is widely used as the polymer electrolyte, even though the performance of solid state and dissociate the ion conductive metallic salt is excellent. That is, a cation of an alkali metal salt because stabilization and forms a complex with the coordination bond with the oxygen atoms present in the polyethylene oxide, is possible to be in a stable ionic state without solvent. However, the polyethylene oxide is to be in a semi-crystalline structure at room temperature, preventing movement of the crystal structure of the dissociated metal salts at room temperature, 1.0 × 10 -8 disadvantage that the energy characteristics indicating a low ionic conductivity of about S / cm decrease there is. Therefore, it is not appropriate to the level of commercialization. [12] Thus, with the workability and the mechanical strength ensured, the ion conductivity and the electric conductivity and the effect of improving battery safety effect the development of the reinforced polymer electrolyte material is an urgent situation. [13] [14] Prior Art Document [15] Japanese Laid-Open Patent Publication No. 2016-540353 No. Detailed Description of the Invention SUMMARY [16] In order to solve the above problems, [17] The present invention is to provide a superior mechanical strength and electrical conductivity, and the ion conductivity of polymer electrolyte secondary battery improved. [18] In addition, the present invention, by including the secondary battery, a polymer electrolyte, and to provide a lithium secondary battery, the battery safety enhanced in high voltage and high temperature. Problem solving means [19] Specifically, in one embodiment of the present invention [20] To the formula (1) or the polymer represented by the formula (2); And [21] It provides a polymer electrolyte secondary cell dopant containing an electron acceptor (electron-acceptor) having at least one double bond as (dopant). [22] Formula 1 [23] [24] [25] [Formula 2] [26] [27] [28] Wherein R and R 5 are each independently selected from C or S, [29] R 1 and R 6 are each independently selected from or , and wherein, R 9 is -C (CF 3 ) 2 -, and [30] R 2 and R 7 is an, [31] R 3 is -S (CF 2 ) 2 SO 3 - Li + , and [32] R 4 is a, wherein, R 10 is -C (CF 3 ) 2 -, and [33] R 8 is and, [34] o and o 1 is 1 or 2, [35] p, p 1 , q, q 1 , r and s is 0 or 1, [36] n: m ratio of 95: a molar ratio of 5 to 5: 95, [37] n: percentage of the 'm' is 95: 5 to 5:95 molar ratio. [38] [39] In the formula 1, wherein n: m ratio of the molar ratio may be 40: 60 to 60: 40, specifically 50: 50 molar ratio. Further, in the above formula (2), wherein n: the ratio of 'm' may be the mole ratio of 40: 60 to 60: 40, specifically 50: 50 molar ratio. [40] The weight average molecular weight (Mw) of the polymer shown by the general formula (1) or (2) is 5,000 g / mol to 1,500,000 g / mol, specifically 50,000 g / mol to 1,500,000 g / mol, more specifically 500,000 g / mol to 1,000,000 g / mol may be. [41] [42] In addition, the polymer of the formula (1) is to be greater than at least one selected from the group consisting of the compound represented by Formula 1a) to (1c. [43] [Chemical Formula 1a] [44] [45] [46] Formula 1b] [47] [48] [49] Formula 1c] [50] [51] In the above formula 1a) to (1c, [52] n2: 5 to 5:95 and the molar ratio: the ratio of 95 m2 [53] n3: 5 to 5:95 and the molar ratio: the ratio of 95 m3 [54] n4: the ratio of m4 is 95: 5 to 5:95 molar ratio. [55] [56] In addition, the polymer of formula (2) may be a compound represented by the following Formula 2a. [57] [Formula 2a] [58] [59] In the formula 2a, [60] n'1: m'1 ratio of 95: 5 to 5:95 molar ratio. [61] [62] Further, the electron acceptor with the at least one double bond may be at least at least one selected from the group consisting of the formula 3 to formula (7). [63] [Formula 3] [64] [65] [66] [Formula 4] [67] [68] [69] [Formula 5] [70] [71] [72] [Chemical Formula 6] [73] [74] [75] [Chemical Formula 7] [76] [77] [78] The polymer: The mole ratio of the electron acceptor is from 1: 0.01 to 1: 500, in particular 1: 200: 0.1 to 1: 400, more specifically 1: 0.1 to 1. [79] [80] The secondary cell polymer electrolyte may further comprise a lithium salt. [81] The lithium salt is Li cation + to include the anion is F - , Cl - , Br - , I - , NO 3 - , N (CN) 2 - , BF 4 - , ClO 4 - , AlO 4 - , AlCl 4 - , PF 6 - , SbF 6 - , AsF 6 - , BF 2 C 2 O 4 - , B (C 2 O 4) 2 - , (CF 3) 2PF 4 -, (CF 3) 3PF 3 -, (CF 3) 4PF 2 -, (CF 3) 5PF -, (CF 3) 6P -, CF 3SO 3 -, C 4F 9SO 3 -, The CF 3 the CF 2 the SO 3 - , ( the CF 3 the SO 2 ) 2 N - , ( the FSO 2 ) 2 N - , the CF 3 the CF 2 ( the CF 3 ) 2 CO - , ( the CF 3 the SO 2 ) 2 N - , ( the SF 5 ) 3 the C - , ( the CF 3 the SO 2 ) 3 C - , CF 3 (CF 2 ) 7 SO 3 - , CF 3 CO 2 - , CH 3 CO 2 - , SCN - , and (CF 3 CF 2 SO 2 ) 2 N - , at least one selected from the group consisting of It may include one. [82] The lithium salt may be included as 0.01M to about 5M, specifically 0.1 M to about 5M, particularly 0.1M to 3M concentration in the polymer electrolyte secondary cell. [83] [84] The secondary batteries the polymer electrolyte can be a self-supporting (free-standing) a solid polymer electrolyte. [85] Further, the polymer electrolyte is a polymer containing the additional ionic liquid-type electrolyte may be a mixed liquid. [86] The ionic liquid of diethyl methyl ammonium trifluoromethane sulfonate, dimethyl propyl ammonium trifluoromethane sulfonate, N, N- diethyl methyl -N- -N- (2- methoxyethyl) ammonium bis (tri fluoro methane sulfonyl) imide, 1-ethyl-3-methyl-imidazolium-methyl-sulfonyl-bis (trifluoromethyl) imide (EMIN-TFSI), 1-ethyl-3-methyl imidazolium bis (fluoro roseol sulfonyl) imide (EMI-FSI), N- methyl -N- propyl pyrrole lithium bis (fluoro sulfonyl) imide (Pyr 13-FSI), N- methyl -N- propyl pyrrole lithium bis (trifluoromethyl Romero tanseol sulfonyl) imide (TFSI Pyr-14), N- methyl -N- propyl piperazine lithium bis-methanesulfonyl (trifluoromethyl) imide, N- butyl -N- methylpyrrole lithium bis methane (trifluoromethyl sulfonyl) may already include one or more selected from the de-methylpropyl and l lithium tree methanesulfonyl group consisting of a sulfonyl imide fluoro. [87] The ionic liquid may be included in the total amount of 0.01% to 50% by weight, based on the polymer electrolyte, more specifically 0.01 wt% to 20 wt%. [88] [89] In one embodiment of the present invention [90] An anode, a cathode and a polymer electrolyte formed on at least one surface of the positive electrode and the negative electrode, the polymer electrolyte may include a polymer electrolyte secondary battery of the present invention. Effects of the Invention [91] In the present invention, it is possible to manufacture a superior mechanical property, and improved electric conductivity and the ion provides a secondary battery, a polymer electrolyte having a conductivity, and the battery safety enhanced by using it electrochemically stable at high voltage and high temperature rechargeable lithium battery. Best Mode for Carrying Out the Invention [92] A detailed explanation follows below with more detail the present invention. [93] Herein and in the terms or words used in the claims is general and not be construed as limited to the dictionary meanings are not, the inventor can adequately define terms to describe his own invention in the best way on the basis of the principle that the interpreted based on the meanings and concepts corresponding to technical aspects of the present invention. [94] [95] Hereinafter will be described in more detail with respect to the secondary battery, a polymer electrolyte and a secondary battery including the same. [96] Specifically, in one embodiment of the present invention [97] To the formula (1) or the polymer represented by the formula (2); And [98] It provides a polymer electrolyte secondary cell dopant containing an electron acceptor (electron-acceptor) having at least one double bond as (dopant). [99] Formula 1 [100] [101] [102] [Formula 2] [103] [104] [105] Wherein R and R 5 are each independently selected from C or S, [106] R 1 and R 6 are each independently selected from or , and wherein, R 9 is -C (CF 3 ) 2 -, and [107] R 2 and R 7 is an, [108] R 3 is -S (CF 2 ) 2 SO 3 - Li + , and [109] R 4 is a, wherein, R 10 is -C (CF 3 ) 2 -, and [110] R 8 is and, [111] o and o 1 is 1 or 2, [112] p, p 1 , q, q 1 , r and s is 0 or 1, [113] From 5 to 5:95 molar ratio, wherein: n: m ratio of 95 [114] n: percentage of the 'm' is 95: 5 to 5:95 molar ratio. [115] [116] In the secondary battery, the polymer electrolyte of the present invention, that the polymer represented by the above formula (1) n and m, and the polymer represented by the formula 2 n ', and m' denotes the number of repetitions of the repeating unit, the formula (1) or the formula repeating unit in the polymer represented by 2 n, and m and the repeating unit n 'and m' are alternately not have a have a predetermined rule each other or rule (alternating), the graft (graft) into or optionally form (randomly) arranged It can be. [117] Specifically, n in formula (I): the ratio of m may be 40: 60 to 60: 40 molar ratio, 50: 50 more specifically. Further, in the formula 2 n: the ratio of 'm' may be the mole ratio of 40: 60 to 60: 40, more specifically 50:50. [118] [119] At this time, in the polymer represented by Formula 1 or Formula 2, wherein R 1 , R 6 , R 4 and R 8 are preferably does not include an ether group. For example, R 1 , R 6 , R 4 and R 8 when a group including ethers, poly to form the coupling structure (ether ether ketone, poly (ether ether ketone), PEEK), such a construction is -O- and -CO - can result in cleavage (cleavage) of the coupling part (RSC Advances, 2012, 2, 4079-4091), electrochemical, and thermal stability is low compared to the polymer of the present invention, there is a problem. Therefore, when the same or substantially similar when said to have a weight average molecular weight of the home, the R in the polymer of the formula (1) or (2), each 1 , R 6 , R 4 and R 8When the ether group contained more in the structure, may be compared with the polymer of the present invention does not include an ether group experience the oxidation initiation voltage at a low voltage of less than 6V. Moreover, the mobility of lithium ions is reduced relatively by the interaction (interaction) with a lot of the oxygen element contained in addition to the polymer structure, the polymer compared to the ionic conductivity of the invention may be slightly degraded. [120] On the other hand, the weight average molecular weight (Mw) of the polymer shown by the general formula (1) or (2) is 5,000 g / mol to 1,500,000 g / mol, specifically 50,000 g / mol to 1,500,000 g / mol, more specifically 500,000 g / mol to 1,000,000 g / mol may be. [121] The mechanical properties when the weight-average molecular weight (Mw) of the polymer is in the above range and processability (moldability), etc., and the battery safety can be produced an improved polymer electrolyte. Specifically, the weight average molecular weight (Mw) can be secured, such as 5,000 g / mol to 1,500,000 g / mol in workability with the mechanical properties of the polymer electrolyte in the case (moldability) and the battery safety effect. [122] On the other hand, the weight average molecular weight is gel permeation chromatography can be measured using the (Gel Permeation Chromatography GPC). For example, after preparing the sample specimen of a certain concentration, to stabilize the GPC measurement system 4 alliance device. And when the device is stabilized eoteonaen the chromatogram by injecting a reference sample and the sample in the sample device, then, the calculation of the molecular weight in accordance with the analysis method (system: Alliance 4, column: Ultrahydrogel linear x 2, eluent: 0.1M NaNO 3 (pH 7.0 phosphate buffer, flow rate: 0.1 mL / min, temp: 40 ℃, injection: 100μL) [123] [124] A polymer of the formula (1) may be at least at least one selected from the group consisting of the compound represented by the following formula 1a) to (1c. [125] [Chemical Formula 1a] [126] [127] [128] Formula 1b] [129] [130] [131] Formula 1c] [132] [133] In Formula 1a to 1c, [134] n2: 5 to 5:95 and the molar ratio: the ratio of 95 m2 [135] n3: 5 to 5:95 and the molar ratio: the ratio of 95 m3 [136] n4: the ratio of m4 is 95: 5 to 5:95 molar ratio. [137] [138] A polymer represented by the above formula (2) may be a compound represented by the following Formula 2a. [139] [Formula 2a] [140] [141] In the formula 2a, [142] n'1: m'1 ratio of 95: 5 to 5:95 molar ratio. [143] [144] Further, in the secondary battery, the polymer electrolyte of the present invention according to one embodiment, the electron acceptor having the double bond at least one of a dopant which can form a polarity high density region within the polymer in order to transport and transfer of lithium ions, and the formula from the group consisting of 3 to 7 may be mentioned at least one or more selected. [145] [Formula 3] [146] [147] [148] [Formula 4] [149] [150] [151] [Formula 5] [152] [153] [154] [Chemical Formula 6] [155] [156] [157] [Chemical Formula 7] [158] [159] The polymer: The mole ratio of the electron acceptor is from 1: 0.01 to 1: 500, in particular 1: 200: 0.1 to 1: 400, more specifically 1: 0.1 to 1. [160] [161] In the case where the electron acceptor is contained in the scope of the overall performance it can be manufactured in a more advanced secondary batteries. Specifically, not only can improve the solubility (solubility) of the solvent or more molar ratio of 0.01 of an electron acceptor that has at least one of the double bond to the polymer 1 mole that, molded at a lower temperature by changing the melting point of the polymer this is to improve the workability and electronic conductivity is possible due to. Further, when the double bond, the molar ratio of no more than 500 with at least one electron acceptor, for one mole of polymer, it is possible to prevent a side reaction of an electron acceptor and a polymer, whereby it is possible to ensure the mechanical properties accordingly. [162] [163] In the case of a general polymer electrolyte so far, compared to the liquid electrolyte within the cell resistance slower the moving speed of the cursor lithium ions, there is a disadvantage has a low ionic conductivity. [164] On the other hand, the polymer electrolyte of the present invention is a lithium ion (Li the substituent + by by a polymer represented by) the source and the conjugated polymer of the general formula (1) or Formula 2 (conjugated polymer) containing both an sulfonate anion stationary phase lithium-ion (Li + ) side reactions and salts (salt) such as decomposition of lithium ions and at the same time liberalization (free of the anti-L i + may be), it is possible to improve the effect of the movement of lithium ions. Therefore, the electrolytic no need to use the electrolyte salt, etc. as an essential component, the ionic conductivity and electrical conductivity are improved, and the battery can be driven under the form of all-solid battery (All solid-ion battery). [165] Further, the polymer electrolyte of the present invention by a polymer represented by the formula (1) or (2) a polyether containing a ketone structure, may have a semi-crystalline thermoplastic characteristics, it is possible to implement a more excellent mechanical properties and thermal stability. [166] Further, the polymer electrolyte of the present invention includes the electron acceptor capable of receiving the electrons of the polymer as a dopant with, the polymer is a charge (charge) is significantly the electronic conductivity and ionic conductivity effects of the polymer electrolyte of the present invention by the dopant the can be further improved. [167] [168] Further, the polymer electrolyte of the present invention may further comprise a lithium salt in order to further improve the transmission characteristics effect lithium cation. [169] The lithium salt is Li cation + to contain the anion is F - , Cl - , Br - , I - , NO 3 - , N (CN) 2 - , BF 4 - , ClO 4 - , AlO 4 - , AlCl 4 - , PF 6 - , SbF 6 - , AsF 6 - , BF 2 C 2 O 4 - , B (C 2 O 4) 2 - , (CF 3) 2PF 4 -, (CF 3) 3PF 3 -, (CF 3) 4PF 2 -, (CF 3) 5PF -, (CF 3) 6P -, CF 3SO 3 -, C 4F 9SO 3 -, The CF 3 the CF 2 the SO 3 - , ( the CF 3 the SO 2 ) 2 N - , ( the FSO 2 ) 2 N - , the CF 3 the CF 2 ( the CF 3 ) 2 CO - , ( the CF 3 the SO 2 ) 2 N - , ( the SF 5 ) 3 the C - , ( the CF 3 the SO 2) 3C -, CF 3(CF 2) 7SO 3 -, CF 3CO 2 -, CH 3CO 2 -, SCN - 및 (CF 3CF 2SO 2) 2N -At least it may include any one selected from the group consisting of. The lithium salt according to one or required may be used by mixing two or more. The lithium salt is typically be suitably changed to the extent possible the use, but in order to obtain the best corrosion resistant film-forming effect of the electrode surface, in the polymer electrolyte 0.01M to about 5M, particularly 0.1M to 5M, 0.1M specifically to It may be included as a 3M concentration. [170] This polymer electrolyte is made or, or with a polymer of the formula (1) or (2), an electron acceptor and a self-supporting comprising a mixture of a lithium salt such as (free-standing with only polymer and an electron acceptor represented by the general formula (1) or (2) ) form may be formed of a solid polymer electrolyte type. [171] The ionic conductivity of the solid polymer electrolyte is 10 -9 S / cm to 10 -5 may be a S / cm. [172] The ionic conductivity may be measured using the AC impedance method. The ionic conductivity was measured in the frequency range 1MHz to 0.01 Hz using the VMP3 measuring equipment and 4294A. [173] [174] Further, the polymer electrolyte of the present invention including an ionic liquid in the polymer matrix of the polymer represented by the above formula (1) or (2), consisting of a polymer and an electron acceptor and optionally a lithium salt represented by the general formula (1) or (2) a polymer matrix and an ionic liquid is mixed with a polymer - may form a mixed liquid electrolyte. [175] The ionic if a liquid, is formed by adding a high ionic conductivity film is formed on the polymer electrolyte surface after drying, the movement of the lithium ions (Li + can be a uniform flux), Li in negative electrode surface + ion plating or, by a uniform stripping phenomenon, it is possible to suppress the lithium dendrite generation. [176] This ionic liquid is the representative example diethyl methyl ammonium trifluoromethane sulfonate, dimethyl propyl ammonium trifluoromethane sulfonate, N, N- diethyl methyl -N- -N- (2- methoxyethyl) ammonium bis (trifluoromethane sulfonyl) imide, 1-ethyl-3-methyl imidazolium (methylsulfonyl-trifluoromethyl) bis-imide (EMIN-TFSI), 1-ethyl-3-methyl imidazolium bis (fluoro sulfonyl) imide (EMI-FSI), N- methyl -N- propyl pyrrole lithium bis (fluoro sulfonyl) imide (Pyr 13-FSI), N- methyl -N- propyl pyrrole lithium bis (trifluoromethanesulfonyl) imide (TFSI Pyr-14), N- methyl -N- propyl l lithium bis (trifluoromethanesulfonyl) imide, N- butyl -N- methylpyrrole lithium bis (tri methanesulfonyl-fluorophenyl) may include one or more selected from the already de-methylpropyl and l lithium tree methanesulfonyl group consisting of a sulfonyl imide fluoro. [177] The ionic liquid may comprise from 50% by weight, in particular 0.01% to 50% by weight, based on the total weight, more particularly 0.01% to 20% by weight of the polymer electrolyte. [178] In this case, the ionic liquid if the content of not more than 50% by weight, due to the viscosity increase can be prevented from the movement of the lithium ions decreases, can be further improved in that a lithium dendrite on the lithium anode surface is formed. [179] The ionic liquid may further comprise a salt (salt) compound, if necessary. [180] Such a polymer-ion conductivity of the liquid electrolyte are mixed 10 -6 S / cm to 10 -4 may be a S / cm. [181] The ionic conductivity may be measured using the AC impedance method. The ionic conductivity was measured in the frequency range 1MHz to 0.01 Hz using the VMP3 measuring equipment and 4294A. [182] [183] On the other hand, these solid state or solid polymer of the present invention mixed liquid electrolyte may be formed in accordance with known conventional solution casting method in the art. [184] A specifically, with the independence of (free-standing) in the form of solid polymer electrolyte is a polymer and an electron acceptor represented by the general formula (1) or (2) of the present invention, the stirring by the addition of lithium salts as needed, in an organic solvent, and then, electrode applied directly to a surface, or a glass substrate, PET (polyethylene terephthalate), PTFE (Teflon), or the support flexible (流 延) applied on a base material such as FEP film (casting film forming) to form a coating, dried (organic removal of the solvent) and can be produced in the form a film (film) that has an electron acceptor and a lithium salt in a polymer network of the polymer represented by the following general formula (1) or (2) are uniformly distributed. [185] In addition, the polymer-liquid mixed electrolytes in the electrode with the polymer and an electron acceptor represented by the general formula (1) or (2) of the present invention, the stirring by the addition of lithium salts as needed, in an organic solvent, and then, above solution casting method applied directly or after drying to prepare a film in the form of a solid polymer electrolyte coating on the substrate, followed by the drying of the solid polymer electrolyte injected adding an ionic liquid that is to dissolve in a battery case to stop the battery safety enhanced by a polymer-liquid mixed it is possible to form the electrolyte. [186] At this time, the organic solvent used to dissolve the polymer and an electron acceptor represented by the general formula (1) or (2) is a low volatile organic solvent or non-volatile organic solvent having a boiling point that is used in a non-aqueous electrolyte can be used in all, its typical example N, N'- dimethylacetamide, N- methyl-2-pyrrolidone (NMP), dimethyl sulfoxide (DMSO), N, N- dimethylformamide (DMF), acetonitrile (acetonirile, AN), propylene carbonate butyrolactone - (PC), ethylene carbonate (EC), butylene carbonate (BC), dimethyl carbonate (DMC), diethyl carbonate (DEC), ethylmethyl carbonate (EMC), fluoro ethylene carbonate (FEC), gamma (GBL), 1,2- dimethoxy ethane, tetrahydroxy furan, 2-methyl tetrahydrofuran (THF), dimethyl sulfoxide, 1,3-dioxolane (DOL), 1,4- dioxane (4 -dioxane), formamide, dimethylformamide, dioxolane, acetonitrile, needle Romero Tan, methyl formate, methyl acetate (EA), ethyl propionate (EP), methyl acetate (MA), methyl propionate (MP), dimethoxyethane (DME) phosphoric acid triester, diethyl ether, trimetrexate ethoxy methane, triglyme (triglyme), tetra-glyme (TEGDME), sulfolane, methyl sulfolane, 1,3-dimethyl-2-imidazolidinone, methyl propionate, and danilmul selected from the group consisting of ethyl, or of which may comprise a mixture of two or more. [187] Specifically, the organic solvent preferably comprises a volatile organic solvent is excellent, such as a low boiling point organic solvent, or N- methyl-2-pyrrolidone such as acetonitrile for removal is easy. Alternatively, the polymer electrolyte of the present invention, the solid-if made of a liquid hybrid polymer electrolyte type, the organic solvent by ring well swell the polymer electrolyte of solid-liquid mixed-polymer non-volatile organic such as tetra-glyme to maintain the electrolyte form the solvent may be used. [188] The amount of the organic solvent If the amount that can be easily coated with a polymer and an electron acceptor represented by the general formula (1) or (2) is not particularly limited, and a polymer electrolyte membrane uniformity secured and at the same time in molding, mechanical properties, film thickness and ion to sufficiently secure the effect of the conductivity, the Chemical formula 1 or about 100 parts by weight to 10,000 parts by weight based on 100 parts by weight of a polymer represented by the two, may be used as a specific part of 1,000 to 5,000 parts by weight. [189] When the amount of the organic solvent exceeds 10000 parts by weight, as well as difficult to remove the organic solvent, it is difficult to ensure the mechanical properties, film thickness, and the ionic conductivity effects of the polymer electrolyte by the residue of the organic solvent. Further, if the amount of the organic solvent is less than 100 parts by weight, the uniformity of the film during molding of the polymer electrolyte is, difficult to uniformly apply the polymer of the formula (1) or (2) it can be lowered. [190] [191] In one embodiment of the present invention [192] An anode, a cathode and a polymer electrolyte formed on at least one surface of the positive electrode and the negative electrode, [193] The polymer electrolyte there is provided a lithium secondary battery comprising a polymer electrolyte of the present invention. [194] The polymer electrolyte is self-supporting (free-standing) a solid polymer electrolyte or the solid may comprise a liquid hybrid polymer electrolytes. [195] The lithium secondary battery of the present invention may further include a separator as needed. [196] [197] In the secondary battery of the present invention according to one embodiment, the polymer electrolyte may be interposed on the at least one surface of the positive electrode and the negative electrode, or at least one surface of the positive electrode, negative electrode and separator. [198] The polymer electrolyte is, as described above, ① the formula (I) or manufactured in the form a film (film) comprising a polymer and an electron acceptor such as represented by the formula (2) Next, group interposed on at least one surface of the manufactured negative electrode, positive electrode and separator (introduced), or ② the organic one was dissolved, such as the formula (1) or polymer and an electron acceptor represented by the general formula (II) in the solvent was prepared in the coating solution, at least one surface of the coating solution for production of the negative electrode, positive electrode and separator and then directly applied, can be introduced and dried. [199] The thickness of the polymer electrolyte membrane of the type may be from about 0.5㎛ to 300㎛ considering ionic conductivity. The electrolyte membrane, and a thickness can secure the film strength of not less than 0.5㎛, if not more than 300㎛ ion forwarder proton (H + ) and so on are easy to pass, and per unit of performance of the secondary battery protection specification the volume increase performance of the secondary battery it can be produced. [200] [201] On the other hand, the positive electrode and the negative electrode constituting the lithium secondary battery of the present invention may be used is manufactured in a conventional manner. [202] First, the positive electrode may be manufactured by forming a positive electrode material mixture layer on a positive electrode collector. The positive electrode material mixture layer can be formed by drying, rolling, and then coating the cathode slurry comprising a cathode active material, a binder, a conductive material and a solvent or the like onto the positive electrode collector. [203] The cathode current collector is so long as it has suitable conductivity without causing chemical changes in the fabricated battery is not particularly limited, for example, stainless steel, aluminum, nickel, titanium, sintered carbon, or carbon on the surface of aluminum or stainless steel , nickel, titanium, can be used as such as to a surface treatment or the like. [204] The positive electrode active material is a reversible intercalation and de capable of intercalation compounds of lithium, specifically, it may comprise a lithium composite metal oxide containing at least one metal and lithium such as cobalt, manganese, nickel or aluminum have. More specifically, the lithium composite metal oxide is the lithium-manganese-based oxide (for example, LiMnO 2 , LiMn 2 O 4 and the like), lithium-cobalt oxide (e.g., LiCoO 2 and the like), lithium-nickel-based oxide (for example, LiNiO 2 and the like), lithium-nickel-manganese-based oxide (for example, LiNi 1-Y Mn Y O 2 (where, 0

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# Name Date
1 201917053927.pdf 2019-12-26
2 201917053927-TRANSLATIOIN OF PRIOIRTY DOCUMENTS ETC. [26-12-2019(online)].pdf 2019-12-26
3 201917053927-STATEMENT OF UNDERTAKING (FORM 3) [26-12-2019(online)].pdf 2019-12-26
4 201917053927-PRIORITY DOCUMENTS [26-12-2019(online)].pdf 2019-12-26
5 201917053927-FORM 1 [26-12-2019(online)].pdf 2019-12-26
6 201917053927-DECLARATION OF INVENTORSHIP (FORM 5) [26-12-2019(online)].pdf 2019-12-26
7 201917053927-COMPLETE SPECIFICATION [26-12-2019(online)].pdf 2019-12-26
8 201917053927-FORM-26 [27-12-2019(online)].pdf 2019-12-27
9 201917053927-Power of Attorney-301219.pdf 2020-01-02
10 201917053927-Correspondence-301219.pdf 2020-01-02
11 201917053927-Information under section 8(2) [25-06-2020(online)].pdf 2020-06-25
12 201917053927-FORM 3 [25-06-2020(online)].pdf 2020-06-25
13 201917053927-Verified English translation [16-07-2020(online)].pdf 2020-07-16
14 201917053927-Proof of Right [16-07-2020(online)].pdf 2020-07-16
15 201917053927-PETITION UNDER RULE 137 [16-07-2020(online)].pdf 2020-07-16
16 201917053927-FORM 18 [13-01-2021(online)].pdf 2021-01-13
17 201917053927-FORM 3 [18-06-2021(online)].pdf 2021-06-18
18 201917053927-FER.pdf 2021-12-27
19 201917053927-OTHERS [24-06-2022(online)].pdf 2022-06-24
20 201917053927-FER_SER_REPLY [24-06-2022(online)].pdf 2022-06-24
21 201917053927-CORRESPONDENCE [24-06-2022(online)].pdf 2022-06-24
22 201917053927-CLAIMS [24-06-2022(online)].pdf 2022-06-24
23 201917053927-ABSTRACT [24-06-2022(online)].pdf 2022-06-24
24 201917053927-US(14)-HearingNotice-(HearingDate-05-09-2022).pdf 2022-08-23
25 201917053927-Correspondence to notify the Controller [30-08-2022(online)].pdf 2022-08-30
26 201917053927-Written submissions and relevant documents [07-09-2022(online)].pdf 2022-09-07
27 201917053927-PatentCertificate30-09-2022.pdf 2022-09-30
28 201917053927-IntimationOfGrant30-09-2022.pdf 2022-09-30
29 201917053927-POWER OF AUTHORITY [01-12-2022(online)].pdf 2022-12-01
30 201917053927-FORM-16 [01-12-2022(online)].pdf 2022-12-01
31 201917053927-ASSIGNMENT WITH VERIFIED COPY [01-12-2022(online)].pdf 2022-12-01

Search Strategy

1 SearchHistoryE_24-12-2021.pdf

ERegister / Renewals

3rd: 18 Oct 2022

From 03/07/2020 - To 03/07/2021

4th: 18 Oct 2022

From 03/07/2021 - To 03/07/2022

5th: 18 Oct 2022

From 03/07/2022 - To 03/07/2023

6th: 28 Jun 2023

From 03/07/2023 - To 03/07/2024

7th: 02 Jul 2024

From 03/07/2024 - To 03/07/2025

8th: 27 Jun 2025

From 03/07/2025 - To 03/07/2026