Title of Invention: Electrolyte membrane for all-solid-state battery and all-solid-state battery comprising same technical field [One] This patent application claims priority based on Korean Patent Application No. 10-2019-0113061 filed on September 11, 2019. The present invention relates to an electrolyte membrane for an all-solid-state battery with improved thermal stability and shutdown function, and an all-solid-state battery including the electrolyte membrane. [2] background [3] When a lithium ion battery using a liquid electrolyte is deformed by an impact or external environment, the liquid electrolyte may leak to the outside of the battery or the electrolyte may be burned due to a short circuit, which may lead to a risk of overheating or explosion. Therefore, it can be said that the development of a solid electrolyte capable of securing safety in the field of lithium ion secondary batteries is a very important task. [4] A lithium secondary battery using a solid electrolyte has advantages in that battery safety is increased, electrolyte leakage can be prevented, so battery reliability is improved, and a thin battery can be easily manufactured. In addition, since lithium metal can be used as the negative electrode, energy density can be improved. Accordingly, it is expected to be applied to small secondary batteries and high-capacity secondary batteries for electric vehicles, and thus it is in the spotlight as a next-generation battery. [5] As the solid electrolyte material, a polymer-based solid electrolyte, an oxide-based solid electrolyte, and a sulfide-based solid electrolyte material are generally used. When a free standing type electrolyte membrane of a thin film is manufactured using only such a solid electrolyte material, defects such as tearing or cracking or the electrolyte material falling off may occur during battery manufacturing or use of the battery. In particular, when lithium metal is used as the negative electrode active material, there is a problem in that lithium dendrites grow from the surface of the negative electrode, and when the grown lithium dendrites come into contact with the positive electrode, a short circuit of the battery is caused. In an all-solid-state battery, a solid electrolyte membrane acts as an electrical insulator for positive/negative electrodes instead of a separator. In particular, when a polymer material is used as the solid electrolyte, the solid electrolyte membrane may be damaged due to the growth of lithium dendrites. When the electrolyte membrane is damaged in this way, current is collected in the damaged part, and rapid heat is generated, which causes ignition and explosion. In particular, in the case of a large-sized battery, since the amount of heat generated by a short circuit is large, there is a problem that the above-mentioned problem is highly likely to become serious. Accordingly, there is a demand for the development of an electrolyte membrane capable of rapidly performing a shutdown function in the event of a short circuit and a sudden rise in the internal temperature of the battery. [6] DETAILED DESCRIPTION OF THE INVENTION technical challenge [7] An object of the present invention is to provide a solid electrolyte membrane to which a shutdown function is provided and an all-solid-state battery including the same to solve the above technical problem. On the other hand, other objects and advantages of the present invention will be understood by the following description. In addition, it will be readily apparent that the objects and advantages of the present invention can be realized by means or methods and combinations thereof recited in the claims. [8] means of solving the problem [9] The present invention relates to a solid electrolyte membrane for an all-solid-state battery. A first aspect of the present invention relates to the solid electrolyte membrane, wherein the solid electrolyte membrane has an ionic conductivity of 1x10 -7 S/cm or more in the range of 20° C. to 30° C., and includes a polymer material (A); and a solid electrolyte material (B); the polymer material (A) contains a block copolymer and has an ionic conductivity of 5X10 -7 S/cm or less at 20°C to 30°C. [10] In the second aspect of the present invention, in the first aspect, the polymer material (A) is an olefin-based polymerization unit, a styrenic polymerization unit, an acrylic polymerization unit, a carbide-based polymerization unit, an ester-based polymerization unit, or two selected among them It contains the above polymerization units. [11] A third aspect of the present invention, in the first or second aspect, the polymer material (A) is ethylene oxide, a polymerization unit of a polyether-based polymer, a polymerization unit of a polycarbonate-based polymer, a polyacrylate-based polymer Polymerization unit, polysiloxane-based polymer polymerization unit, phosphazene-based polymer polymerization unit, polypropylene oxide-based polymer polymerization unit, polyphosphoric acid ester-based polymer polymerization unit, polyvinyl alcohol polymerization unit, polyvinylidene fluoride-based polymer It contains a polymerization unit or a polymerization unit. [12] A fourth aspect of the present invention, in at least one of the first to third aspects, wherein the polymer material (A) comprises one or more of the compounds represented by the following [Formula 1], m and n are each independently an integer of 1 or more, and P B is ethylene oxide, a polymerization unit of a polyether-based polymer, a polymerization unit of a polycarbonate-based polymer, a polymerization unit of a polyacrylate-based polymer, a polymerization unit of a polysiloxane-based polymer , a polymerization unit of a phosphazene-based polymer, a polymerization unit of a polypropylene oxide-based polymer, a polymerization unit of a polyphosphoric acid ester-based polymer, a polymerization unit of polyvinyl alcohol, a polymerization unit of a polyvinylidene fluoride-based polymer, or two or more selected among them Including, wherein P A is an olefin-based polymerization unit, a styrene-based polymerization unit, an acrylic polymerization unit, a carbide-based polymerization unit, an ester-based polymerization unit, or two or more selected from these: [13] [14] [Formula 1] [15] -[P A ] n -[P B ] m - . [16] [17] In a fifth aspect of the present invention, in at least one of the first to fourth aspects, the solid electrolyte material (B) is a polymer-based solid electrolyte material, an oxide-based solid electrolyte material, a sulfide-based solid electrolyte material, or any of them. Two or more may be included, and 80 wt% or more of the polymer-based solid electrolyte material is included. [18] In a sixth aspect of the present invention, in the fifth aspect, the polymer-based solid electrolyte material is a polymer electrolyte (C) in which a lithium salt (C1) and a polymer resin (C2) are mixed, and the polymer electrolyte is at 20° C. to It has an ionic conductivity of about 1 x 10 -7 S/cm or more at 30°C . [19] A seventh aspect of the present invention, in at least one of the fifth to sixth aspects, wherein the polymer resin (C2) is a polyether-based polymer, a polycarbonate-based polymer, an acrylate-based polymer, a polysiloxane-based polymer, and phospha Gene-based polymers, polyethylene derivatives, alkylene oxide derivatives including polypropylene oxide and/or polyethylene oxide, polyvinyl acetate-based polymers, phosphoric acid ester-based polymers, polyacrylonitrile-based polymers, poly agitation lysine, poly It contains ester sulfide, polyvinyl alcohol, polyvinylidene fluoride-based polymer, or a mixture of two or more thereof. [20] An eighth aspect of the present invention, in at least one of the first to seventh aspects, the solid electrolyte material (B) is 20 wt% to 80 wt% or more with respect to 100 wt% of the total solid electrolyte membrane. [21] A ninth aspect of the present invention, in at least one of the fourth to eighth aspects, PB relative to 100 wt% of the polymer material (A) is included in the range of 10 wt% to 90 wt%. [22] A tenth aspect of the present invention, in at least one of the sixth to ninth aspects, the polymer resin (C2) has a molecular weight (Mn) of 1 kg/mol to 10,000 kg/mol. [23] In an eleventh aspect of the present invention, in at least one of the first to ninth aspects, the polymer material (A) has a molecular weight (Mn) of 1 kg/mol to 10,000 kg/mol. [24] In a twelfth aspect of the present invention, in the fifth to eleventh aspects, the solid electrolyte material (B) contains 80 wt% or more of the polymer-based solid electrolyte material relative to 100 wt% of the solid electrolyte material (B). [25] Effects of the Invention [26] In the solid electrolyte membrane according to the present invention, an ion conduction blocking layer is formed in the electrolyte membrane by polymer phase separation under high-temperature conditions, such as when the internal temperature of the battery rises, to block the movement of lithium ions. By forming such an 'ion conduction blocking layer' (hereinafter, may be abbreviated as 'blocking layer'), thermal runaway and consequent explosion of the battery are prevented, thereby improving the thermal stability of the battery. [27] Brief description of the drawing [28] The drawings accompanying the present specification illustrate preferred embodiments of the present invention, and serve to better understand the technical spirit of the present invention together with the above-described content of the present invention, so the present invention is limited only to the matters described in such drawings is not interpreted as On the other hand, the shape, size, scale, or ratio of elements in the drawings included in this specification may be exaggerated in order to emphasize a clearer description. [29] 1 is a schematic diagram showing a structure of a solid electrolyte membrane according to the present invention and a mechanism of forming an insulating film according to phase separation. [30] 2 to 3 show AFM phase-mode images of the solid electrolyte membranes of Examples 1-1 and 1-2, respectively. [31] Modes for carrying out the invention [32] Hereinafter, embodiments of the present invention will be described in detail. Prior to this, the terms or words used in the present specification and claims should not be construed as being limited to conventional or dictionary meanings, and the inventor should properly understand the concept of the term in order to best describe his invention. Based on the principle that it can be defined, it should be interpreted as meaning and concept consistent with the technical idea of ​​the present invention. Therefore, the configuration described in the embodiment described in this specification is only the most preferred embodiment of the present invention and does not represent all of the technical idea of ​​the present invention, so various equivalents and It should be understood that there may be variations. [33] [34] Throughout this specification, when it is said that a part "includes (comprises)" a certain element, it does not exclude other elements unless otherwise stated, but may further include other elements. means that [35] [36] In addition, the terms "about", "substantially", etc. used throughout this specification are used as meanings at or close to the numerical values ​​when manufacturing and material tolerances inherent in the stated meaning are presented to help the understanding of the present application It is used to prevent an unconscionable infringer from using the mentioned disclosure in an unreasonable way. [37] [38] Throughout this specification, the description of “A and/or B” means “A or B or both”. [39] [40] The specific terminology used in the detailed description that follows is for the sake of convenience and not limitation. The words 'right', 'left', 'top' and 'bottom' indicate directions in the drawings to which reference is made. The words 'inwardly' and 'outwardly' refer respectively to directions towards or away from the geometric center of the designated device, system, and members thereof. 'Anterior', 'rear', 'above', 'below' and related words and phrases indicate positions and orientations in the drawings to which reference is made and should not be limiting. These terms include the words listed above, derivatives thereof, and words of similar meaning. [41] [42] The present invention relates to an electrolyte membrane for an all-solid-state battery and an all-solid-state battery including the same. The solid electrolyte membrane according to the present invention generally operates as an insulating barrier and an ion conductive layer between the positive and negative electrodes in the temperature range at which the battery is driven, and when the temperature inside the battery rapidly rises, such as a short circuit, ions A conduction blocking layer may be formed to control the operation of the battery. In the present invention, the ion conduction blocking layer is formed by melting and phase separation of the polymer material (A) having low ion conductivity contained in the solid electrolyte membrane. [43] [44] 1 is a schematic diagram showing a mechanism in which a solid electrolyte membrane and an ion conduction blocking layer are formed according to the present invention. With reference to this, the solid electrolyte membrane of the present invention will be described in detail. [45] [46] The solid electrolyte membrane of the present invention is interposed between the positive electrode and the negative electrode of an all-solid-state battery and functions as an electrical insulation and ion conductive layer between the positive electrode and the negative electrode. In one embodiment of the present invention, the solid electrolyte membrane exhibits an ionic conductivity of 1x10 -7 S/cm or more at room temperature (20° C. to 30° C.), and has the form of a sheet having a thickness of 15 μm to 100 μm. can [47] In the present invention, the solid electrolyte membrane includes a solid electrolyte material (B) and a polymer material (A) having low ion conductivity. [48] In one embodiment of the present invention, the solid electrolyte material (B) is 1x10 -7 S/cm or more, 1x10 -6 S/cm or more, or 1x10 -5 S/cm or more at room temperature (20° C. to 30° C.) As indicating ionic conductivity, it may include a polymer-based solid electrolyte material, an oxide-based solid electrolyte material, a sulfide-based solid electrolyte material, or two or more thereof. [49] Preferably, the solid electrolyte material (B) may include 80 wt% or more, 90 wt% or more, or 99 wt% or more of the polymer-based solid electrolyte material. In one embodiment of the present invention, the solid electrolyte material (B) may contain 100 wt% of the polymer-based solid electrolyte material. As will be described later, in the solid electrolyte membrane, the polymer material (A) and the solid electrolyte material (B) including the polymer-based solid electrolyte material are at least partially melted to have fluidity under high-temperature conditions. Phase separation of the material (A) and the solid electrolyte material (B) proceeds. As a result, as shown in FIG. 1 , an ion conduction blocking layer including the polymer material (A) may be formed in the solid electrolyte membrane. That is, in the present invention, from the viewpoint of facilitating phase separation of the polymer material (A), the solid electrolyte material (B) is preferably made of a polymer-based solid electrolyte material having the above-mentioned weight ratio range. [50] [51] In one embodiment of the present invention, the solid electrolyte material (B) may be included in the range of 20 wt% to 90 wt%, or 30 wt% to 85 wt%, or 40 wt% to 80 wt% relative to 100 wt% of the solid electrolyte membrane. . When the content of the solid electrolyte material (B) satisfies the above range, after the solid electrolyte membrane is exposed to high temperature, the phase separation of the polymer materials included in the solid electrolyte membrane effectively proceeds. The polymer material (A) as a material may form the ion conduction blocking layer in a direction perpendicular to the thickness direction of the solid electrolyte membrane and in a direction horizontal to the solid electrolyte membrane. [52] [53] The polymer-based solid electrolyte material is a composite in which a lithium salt (C1) and a polymer resin (C2) are mixed, that is, a polymer electrolyte (C) formed by adding a polymer resin (C2) to a solvated lithium salt (C1). In addition, the polymer electrolyte may exhibit an ionic conductivity of about 1 x 10 -7 S/cm or more at room temperature conditions (about 20° C. to 30° C.) . [54] [55] The polymer resin (C2) contains a polar element such as oxygen or nitrogen, and these elements coordinate with dissociated ions to form a polymer-ion complex to deliver lithium ions, for example, without limitation. For example, polyether-based polymers, polycarbonate-based polymers, acrylate-based polymers, polysiloxane-based polymers, phosphazene-based polymers, polyethylene derivatives, alkylene oxide derivatives such as polypropylene oxide and/or polyethylene oxide, polyvinyl acetate-based polymers, Phosphoric acid ester polymer, polyacrylonitrile polymer, poly agitation lysine, polyester sulfide, polyvinyl alcohol, polyvinylidene fluoride polymer, polymer containing an ionic dissociation group, etc. are one of them. may include more than one. In another embodiment of the present invention, the polymer electrolyte is a polymer resin obtained by copolymerizing one or more amorphous polymers of PMMA, polycarbonate, polysiloxane (pdms), and phosphazene as a comonomer in a PEO (polyethylene oxide) main chain. Examples thereof include coalescing, comb-like polymer, and cross-linked polymer resins, and at least one of them may be included. Meanwhile, in one embodiment of the present invention, the polymer resin may exhibit ion conductivity. [56] According to one embodiment of the present application, the polymer resin (C2) is polyethylene oxide [poly (ethylene oxide); PEO], polypropylene oxide [poly (propylene oxide); PPO], polyacrylonitrile [poly(acrylonitrile); PAN], polyvinyl chloride [poly(vinyl chloride); PVC], polyvinylidene fluoride [poly(vinylidene fluoride); PVDF], polymethyl methacrylate [poly(methyl methacrylate); PMMA], polysiloxane [polysiloxane], polypropylene carbonate [polypropylene carbonate; PPC], polyphosphazene [polyphosphazene], and may include those selected from the group consisting of combinations thereof, but is not limited thereto. [57] In addition, according to a specific embodiment of the present invention, the polymer resin (C2) may have a molecular weight (Mn) range of 1 kg / mol to 10,000 kg / mol. In view of the physical strength of the solid electrolyte membrane, the molecular weight is preferably 1 kg/mol or more. On the other hand, in terms of molecular mobility and phase separation effect, the molecular weight is preferably 10,000 kg/mol or less. The molecular weight may be measured using, for example, gel permeation chromatography (GPC, PL GPC220, Agilent Technologies). [58] [59] In the electrolyte of the present invention, the above-described lithium salt is an ionizable lithium salt and may be expressed as Li + X − . The anion of the lithium salt is not particularly limited, but F - , Cl - , Br - , I - , NO 3 - , N(CN) 2 - , BF 4 - , ClO 4 - , PF 6 - , (CF 3 ) 2 PF 4 - , (CF 3 ) 3 PF 3 - , (CF 3 )) 4 PF 2 - , (CF 3 ) 5 PF - , (CF 3 ) 6 P - , CF 3 SO 3 - , CF 3 CF 2 SO 3 - , (CF 3 SO 2 ) 2 N - , (FSO 2 ) 2 N - , CF 3 CF 2(CF 3 ) 2 CO - , (CF 3 SO 2 ) 2 CH - , (SF 5 ) 3 C - , (CF 3 SO 2 ) 3 C - , CF 3 (CF 2 ) 7 SO 3 - , CF 3 CO 2 - , CH 3 CO 2 -, SCN - , (CF 3 CF 2 SO 2 ) 2 N - and the like can be exemplified. [60] [61] In one embodiment of the present invention, the polymer material (A) has no ionic conductivity or low ionic conductivity in the solid electrolyte membrane. For example, the polymer material (A) may have an ionic conductivity of 5X10 -7 S/cm or less, or 9x10 -8 S/cm or less under room temperature conditions (about 20° C. to 30° C.). [62] [63] Further, in one embodiment of the present invention, the polymer material (A) may include a copolymer, wherein the copolymer is a polymerization unit constituting at least one of the polymer resins (C2) of the polymer electrolyte described above as a polymerization unit. It may contain units. In a specific embodiment of the present invention, the copolymer may include a block copolymer, a graft copolymer, or both. The block copolymer is obtained by repeating polymerization of any one monomer to form a block and polymerization of another monomer to form a block. The graft copolymer is obtained in such a way that a side chain in which one monomer is polymerized is graft-linked to a main chain in which another monomer is polymerized. [64] In a specific embodiment of the present invention, when the block copolymer that can be used as the polymer material (A) is represented by a chemical formula, it can be described as [Formula 1] below. In the following [Formula 1], m and n are each independently an integer of 1 or more. [65] [66] [Formula 1] [67] -[P A ] n -[P B ] m - [68] [69] In Formula 1, PB may be a polymerization unit constituting the aforementioned polymer resin (C2). Specific examples thereof may include ethylene oxide, which is a polymerization unit of polyethylene oxide. In addition, in addition to this, PB is a polymerization unit of a polyether-based polymer, a polymerization unit of a polycarbonate-based polymer, a polymerization unit of a polyacrylate-based polymer, a polymerization unit of a polysiloxane-based polymer, a polymerization unit of a phosphazene-based polymer, polypropylene It may include at least one polymerization unit selected from a polymerization unit of an oxide-based polymer, a polymerization unit of a polyphosphoric acid ester-based polymer, a polymerization unit of polyvinyl alcohol, and a polymerization unit of a polyvinylidene fluoride-based polymer. More specifically in the present invention, the PB is a polymerization unit ethylene oxide (Ethylene oxide), carbonate (carbonate), amide (amide), imide (imide), aspartic acid (aspartic acid), acrylonitrile (Acrylonitrile) ), peptide, acrylate, urethane, acrylamide, acrylic acid, vinyl acetate, vinylidene chloride and methyl methacrylate It may include one or more selected. [70] On the other hand, PA is an olefin-based polymerization unit, a styrene-based polymerization unit, an acrylic polymerization unit, a carbide-based polymerization unit, an ester-based polymerization unit, a diene-based polymerization unit such as ethylene, a lactone-based polymerization unit, or two or more selected among them. can More specifically, in the present invention, P A may include at least one selected from ethylene, propylene, and isobutylene as a polymerization unit. [71] In a preferred embodiment of the present invention, PB in the polymer material (A) of Formula 1 may include a polymer unit constituting the polymer resin (C2) used in the finally obtained actual solid electrolyte membrane. For example, when polyethylene oxide (PEO) is used as the polymer resin (C2) of the polymer-based solid electrolyte, the polymer material (A) includes a copolymer containing ethylene oxide as a polymer unit as a PB unit . can do. [72] In a specific embodiment of the present invention, the polymer material (A) may include a polystyrene-based copolymer (PS-b-PEO) including a styrene-based polymerized unit and an ethylene oxide-based polymerized unit, and such a polystyrene-based copolymer The coalescence is one with an ionic conductivity of 9x10 -7 S/cm or less. The polystyrene-based copolymer may be, for example, a block copolymer including a styrene-based block and an ethylene oxide-based block. [73] As such, when the polymer material (A) has the above-described characteristics, PB relative to 100 wt% of the polymer material (A) may be included in the range of 10 wt% to 90 wt%, preferably in the range of 20 wt% to 80 wt%. In one embodiment of the present invention, the content of P B and/or P A in the copolymer may be measured through a method of TGA analysis (thermogravimetric analysis) or GC-Mass (gas chromatography mass spectrometry). [74] [75] On the other hand, in one embodiment of the present invention, the polymer material (A) may have a molecular weight (Mn) range of 1 kg / mol to 10,000 kg / mol, or 10 kg / mol to 1,000 kg / mol. Within the above range, the molecular weight is preferably 1 kg/mol or more or 10 kg/mol in terms of physical strength of the solid electrolyte membrane. In addition, when the molecular weight is too small, it is difficult to form a layered structure in the electrolyte membrane in phase separation because the length of the polymer chain is short. On the other hand, in terms of molecular mobility and phase separation effect, the molecular weight is preferably 10,000 kg/mol or less. [76] [77] Also, in one embodiment of the present invention, the polymer material (A) preferably has a glass transition temperature (Tg) and/or a melting temperature (Tm) of 150° C. or less. When the melting temperature exceeds the above range, the polymer material (A) does not melt even when the internal temperature of the battery increases, so chain mobility is not implemented, and phase separation does not proceed, so it is difficult to achieve a desired effect. [78] [79] In the present invention, the solid electrolyte membrane is about 100 μm or less, preferably about 15 μm to 90 μm. The thickness may have an appropriate thickness in consideration of ionic conductivity, physical strength, energy density of an applied battery, and the like within the above-described range. For example, in terms of ion conductivity or energy density, the thickness may be 80 μm or less, or 70 μm or less, or 60 μm or less or 50 μm or less. Meanwhile, in terms of physical strength, the thickness may be 20 μm or more, or 30 μm or more, or 40 μm or more. [80] [81] As described above, in the solid electrolyte membrane according to the present invention, the phase separation of the solid electrolyte material (B) and the polymer material (A) is induced as the temperature of the solid electrolyte membrane increases, in particular, as the temperature rises, so that the polymer in the solid electrolyte membrane An ion conduction blocking layer comprising material (A) is formed. That is, the polymer material (A) having low ionic conductivity contained in the solid electrolyte membrane is melted under a specific temperature condition to form an ion conduction blocking layer in the solid electrolyte membrane according to the phase separation behavior (see FIG. 1 ). The formation of the ion conduction blocking layer blocks the movement of ions between the positive electrode and the negative electrode, so that the battery operation can be stopped. That is, since the operation of the battery is stopped when the temperature inside the battery is rapidly increased, it is possible to prevent further temperature increase or explosion of the battery due to the increase in temperature. [82] [83] 1 schematically shows a mechanism in which a barrier layer is formed according to the structure and phase separation of a solid electrolyte membrane according to an embodiment of the present invention. In FIG. 1, black arrows indicate the movement of lithium ions. Under a typical battery operating temperature, the polymer material (A) is randomly distributed in the solid electrolyte membrane, so that the transfer of lithium ions between the positive electrode and the negative electrode is not hindered. Accordingly, the solid electrolyte membrane exhibits ionic conductivity resulting from the solid electrolyte material (B). On the other hand, when the internal temperature of the battery increases, the fluidity of the polymer material (A) and the solid electrolyte material (B) increases. In particular, when the solid electrolyte material (B) mainly contains a polymer-based solid electrolyte material, the solid electrolyte membrane is melted to phase-separate the polymer-based solid electrolyte material and the polymer material. As a result, the polymer material (A) can form a layered barrier layer in the solid electrolyte membrane, and ion conduction is blocked by the formation of the barrier layer. As schematically schematically shown in FIG. 1 , the barrier layer may be formed in a layered structure as shown in (a), (b) and (c) in the solid electrolyte membrane. The position of the blocking layer is shown by way of example and is not limited to the position shown in the drawings, and may be formed at any position based on the thickness of the solid electrolyte membrane. Alternatively, it may be formed at an arbitrary position based on the thickness of the solid electrolyte membrane by phase separation. Alternatively, the solid electrolyte membrane may be formed in a shape in which a polymer material surrounds the solid electrolyte material as shown in FIG. 1(d) by phase separation. On the other hand, when this phase separation occurs as illustrated in FIG. [84] [85] The blocking layer refers to a shape in which the polymer material (A) is concentrated at a high concentration in a local area according to phase separation to suppress ion conduction, and is not limited to a specific shape. For example, the barrier layer may be formed in a layered structure on either surface of the solid electrolyte membrane or in the solid electrolyte membrane. Such a layered structure may be formed entirely at a certain depth or surface of the solid electrolyte membrane, or small droplets of molten polymers may be gathered to form a layer. 1 schematically shows various embodiments of a blocking layer. When the barrier layer is developed as the temperature of the battery rises, ion transfer is consequently blocked and the battery operation is stopped, so that the thermal stability of the battery is improved. [86] [87] The solid electrolyte membrane according to the present invention may be manufactured, for example, by the following method, but is not particularly limited thereto. Specifically, the following description has been described using the polymer electrolyte (C) as the solid electrolyte material (B) as an example. [88] First, the polymer electrolyte (C) and the polymer material (A) are put in an appropriate solvent to prepare a polymer solution for manufacturing a solid electrolyte membrane. In one embodiment of the present invention, the lithium salt, the polymer resin (C2) and the polymer material (A) may be added to the solvent at the same time, or may be sequentially added at each time. [89] The concentration of the polymer solution may be appropriately adjusted to a degree necessary for uniform coating of the solid electrolyte membrane, and is not limited to a specific range. The solvent may be used without limitation as long as it can be removed through a subsequent drying process without changing the properties of the components to be input, and an appropriate one may be selected according to the input material used. For example, when using an alkylene oxide system such as polyethylene oxide (PEO) as the polymer resin (C2), acetonitrile may be used as the solvent. Next, the polymer solution is applied to a release sheet such as a terephthalate film and molded into a film having a predetermined thickness. For the application and molding, a known coating method such as a doctor blade may be used. Thereafter, the solvent is removed by drying to obtain a solid electrolyte membrane. On the other hand, in one specific embodiment of the present invention, the solid electrolyte membrane may further include a binder resin in the range of 10 wt% or less, if necessary. [90] [91] In addition, the present invention provides an all-solid-state battery including the above-described solid electrolyte membrane. The all-solid-state battery includes a positive electrode, a negative electrode, and a solid electrolyte membrane. In one embodiment of the present invention, the negative electrode may include lithium metal as an anode active material. [92] [93] In the present invention, the positive electrode and the negative electrode may include a current collector and an electrode active material layer formed on a surface of the current collector, and the active material layer may include a plurality of electrode active material particles and a solid electrolyte material. In one embodiment of the present invention, the current collector itself may be applied as the negative electrode without forming an active material layer on the surface of the current collector when the negative electrode is manufactured. In addition, each of the electrodes may further include at least one of a conductive material and a binder resin, if necessary. In addition, the electrode may further include various additives for the purpose of supplementing or improving the physicochemical properties of the electrode. [94] [95] In the present invention, the anode active material may include lithium metal as the anode active material of a lithium ion secondary battery, and any material that can be used as the anode active material may be used. For example, the negative active material may include carbon such as non-graphitizable carbon and graphitic carbon; Li x Fe 2 O 3 (0≤x≤1), Li x WO 2 (0≤x≤1), Sn x Me 1-x Me' y O z (Me: Mn, Fe, Pb, Ge; Me' : metal composite oxides such as Al, B, P, Si, elements of Groups 1, 2, and 3 of the periodic table, halogen; 0