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Positive Electrode Material For Lithium Secondary Battery, Method For Manufacturing Same, And Positive Electrode For Lithium Secondary Battery And Lithium Secondary Battery Comprising Same

Abstract: The present invention relates to a positive electrode material, a method for manufacturing the same, a positive electrode for a lithium secondary battery and a lithium secondary battery comprising the same. According to the present invention, the positive electrode material comprises: a first positive active material represented by chemical formula 1 below and a second positive active material represented by chemical formula 2 below, wherein the positive electrode material has an electrical conductivity of 0.1 μS/cm to 150 μS/cm, which is measured after compressing the second positive active material with a rolling density of 400kgf to 2,000 kgf and manufacturing the second positive active material in the form of a pellet. [Chemical formula 1] LiCo1-aM1aO2 wherein, M1 is at least one selected from the group consisting of Al, Ti, Mg, and Zr, and 0≤a≤0.2 [Chemical formula 2] LiNibCocMndM2eO2 wherein, M2 is at least one selected from the group consisting of Al, Ti, Mg, Zr, Y, Sr, and B, and 0

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Notices, Deadlines & Correspondence

Patent Information

Application #
Filing Date
06 February 2020
Publication Number
12/2020
Publication Type
INA
Invention Field
ELECTRICAL
Status
Email
IPO@KNSPARTNERS.COM
Parent Application
Patent Number
Legal Status
Grant Date
2023-11-30
Renewal Date

Applicants

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

Inventors

1. PARK, Young Uk
LG Chem Research Park, 188, Munji-ro, Yuseong-gu, Daejeon 34122
2. YOO, Tae Gu
LG Chem Research Park, 188, Munji-ro, Yuseong-gu, Daejeon 34122
3. HWANG, Jin Tae
LG Chem Research Park, 188, Munji-ro, Yuseong-gu, Daejeon 34122
4. JUNG, Wang Mo
LG Chem Research Park, 188, Munji-ro, Yuseong-gu, Daejeon 34122
5. PARK, Sung Bin
LG Chem Research Park, 188, Munji-ro, Yuseong-gu, Daejeon 34122

Specification

The present invention relates to a lithium secondary battery positive electrode material, the positive electrode material production method for a lithium secondary battery positive electrode comprising the positive electrode material, and a lithium secondary battery comprising the same. BACKGROUND [5] There is demand for secondary batteries as an energy source is rapidly increasing as the development of technology and the demand for mobile devices increases. The secondary battery has a high energy density and voltage, long cycle life, self-discharge rate are commercially available and widely used low-lithium secondary battery. [6] In recent years, it has become a research want to shorten the high capacity and the charge and discharge time of the lithium secondary battery actively. [7] Conventional positive electrode active material of a lithium secondary battery is a lithium-transition metal composite oxide is used, LiCoO Of these two lithium cobalt such as a composite metal oxide reaction even at a high current as the operation voltage is high, lithium ions are desorbed effectively in high-speed charge can be can be the charging efficiency it provides superior anode. However, the LiCoO 2 has since due to destabilization of the crystal structure of the de-lithium in poor thermal properties, particularly high cobalt limitation in using large quantities as a power source in fields such as electric cars. [8] Recently, lithium-cobalt composite metal oxide and the lithium nickel cobalt manganese oxide, Li (Ni a low cost a Co b Mn c ) O 2 (wherein, a, b, c is an atomic fraction of each independent oxide composition element, 0 < a <1, 0

Documents

Application Documents

# Name Date
1 202017005158.pdf 2020-02-06
2 202017005158-STATEMENT OF UNDERTAKING (FORM 3) [06-02-2020(online)].pdf 2020-02-06
3 202017005158-POWER OF AUTHORITY [06-02-2020(online)].pdf 2020-02-06
4 202017005158-FORM 1 [06-02-2020(online)].pdf 2020-02-06
5 202017005158-DRAWINGS [06-02-2020(online)].pdf 2020-02-06
6 202017005158-DECLARATION OF INVENTORSHIP (FORM 5) [06-02-2020(online)].pdf 2020-02-06
7 202017005158-COMPLETE SPECIFICATION [06-02-2020(online)].pdf 2020-02-06
8 202017005158-RELEVANT DOCUMENTS [14-02-2020(online)].pdf 2020-02-14
9 202017005158-FORM 13 [14-02-2020(online)].pdf 2020-02-14
10 202017005158-Information under section 8(2) [08-07-2020(online)].pdf 2020-07-08
11 202017005158-FORM 3 [08-07-2020(online)].pdf 2020-07-08
12 202017005158-Verified English translation [31-07-2020(online)].pdf 2020-07-31
13 202017005158-Proof of Right [31-07-2020(online)].pdf 2020-07-31
14 202017005158-certified copy of translation [31-07-2020(online)].pdf 2020-07-31
15 202017005158-FORM 3 [16-07-2021(online)].pdf 2021-07-16
16 202017005158-FORM 18 [02-08-2021(online)].pdf 2021-08-02
17 202017005158-FORM-26 [24-09-2021(online)].pdf 2021-09-24
18 202017005158-FER_SER_REPLY [29-09-2021(online)].pdf 2021-09-29
19 abstract.jpg 2021-10-19
20 202017005158-GPA-270921.pdf 2021-10-19
21 202017005158-FER.pdf 2021-10-19
22 202017005158-Correspondence-270921.pdf 2021-10-19
23 202017005158-OTHERS [15-03-2022(online)].pdf 2022-03-15
24 202017005158-FER_SER_REPLY [15-03-2022(online)].pdf 2022-03-15
25 202017005158-DRAWING [15-03-2022(online)].pdf 2022-03-15
26 202017005158-COMPLETE SPECIFICATION [15-03-2022(online)].pdf 2022-03-15
27 202017005158-CLAIMS [15-03-2022(online)].pdf 2022-03-15
28 202017005158-PA [16-11-2022(online)].pdf 2022-11-16
29 202017005158-ASSIGNMENT DOCUMENTS [16-11-2022(online)].pdf 2022-11-16
30 202017005158-8(i)-Substitution-Change Of Applicant - Form 6 [16-11-2022(online)].pdf 2022-11-16
31 202017005158-FORM 3 [24-02-2023(online)].pdf 2023-02-24
32 202017005158-PatentCertificate30-11-2023.pdf 2023-11-30
33 202017005158-IntimationOfGrant30-11-2023.pdf 2023-11-30

Search Strategy

1 202017005158searchE_06-09-2021.pdf

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