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Exterior material for all-solid-state battery, method for manufacturing same, and all-solid-state battery

An all-solid battery and outer packaging technology, applied in solid electrolytes, lithium batteries, secondary batteries, etc., can solve the problems of difficulty in following the diversification of shapes and the limit of light weight.

Pending Publication Date: 2021-08-27
DAI NIPPON PRINTING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the past, metal outer packaging materials that have been frequently used for batteries have the disadvantages that it is difficult to follow the diversification of shapes, and there is a limit to light weight.

Method used

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  • Exterior material for all-solid-state battery, method for manufacturing same, and all-solid-state battery
  • Exterior material for all-solid-state battery, method for manufacturing same, and all-solid-state battery
  • Exterior material for all-solid-state battery, method for manufacturing same, and all-solid-state battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0227] As the substrate layer, a polyethylene terephthalate film (12 μm) / adhesive layer (two-component curing polyurethane adhesive (polyol compound and aromatic isocyanate compound)) laminated in this order with a thickness of 3 μm is prepared. ) / laminated film of biaxially stretched nylon film (thickness 15 μm). Moreover, the barrier layer which consists of aluminum alloy foil (JIS H4160:1994A8021H-O, thickness 40 micrometers) was prepared. Both surfaces of the barrier layer were subjected to chemical conversion treatment by a method described later to form a barrier layer protective film (thickness: 10 nm). Next, the barrier layer and the substrate layer are laminated by dry lamination. Specifically, a two-component curable polyurethane adhesive (polyol compound and aromatic isocyanate compound) is applied to one surface of the barrier layer protective film formed on the surface of the barrier layer to form an adhesive layer (cured Thickness 3μm). Next, after laminating ...

Embodiment 2

[0230] As the heat-sealable resin layer, the polyethylene terephthalate film (thickness 50 μm) of Table 1 was used, except that, it was carried out in the same manner as in Example 1, and obtained by successively laminating the base material layer (polyethylene terephthalate film). Ethylene phthalate film (12 μm) / adhesive layer (3 μm) / biaxially stretched nylon film (15 μm)) / adhesive layer (3 μm) / barrier layer protective film (10nm) / barrier layer ( 40 μm) / barrier layer protective film (10nm) / adhesive layer (3 μm) / heat-sealable resin layer (40 μm) laminate.

Embodiment 3

[0232] Except not forming the protective film of the barrier layer on the surface of the barrier layer, it was operated in the same manner as in Example 1 to obtain a substrate layer (polyethylene terephthalate film (12 μm) / adhesive layer) laminated in sequence. (3μm) / biaxially stretched nylon film (15μm)) / adhesive layer (3μm) / barrier layer (40μm) / adhesive layer (3μm) / heat-sealable resin layer (50μm) laminated body Outer packing material.

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Abstract

Provided is an exterior material for an all-solid-state battery, wherein hydrogen sulfide generated inside the all-solid-state battery including a sulfide solid electrolyte material is effectively suppressed from leaking to the outside. The exterior material for an all-solid-state battery is used for an all-solid-state battery including a sulfide solid electrolyte material, and is composed of a laminate having: at least a substrate layer; a barrier layer; and a heat-fusible resin layer in this order from the outside, wherein the amount of hydrogen sulfide permeation through the resin constituting the heat-fusible resin layer is 1.0x10<-9> cc.mm / cm<2>.sec.cmHg or less.

Description

technical field [0001] The present invention relates to an outer packaging material for an all-solid battery, a manufacturing method thereof, and an all-solid battery. Background technique [0002] An all-solid battery in which the electrolyte is a solid electrolyte is known. The all-solid-state battery does not use organic solvents in the battery, so it has the advantages of high safety and wide operating temperature range. [0003] Among inorganic solid electrolytes, sulfide-based inorganic solid electrolytes are known to have high ion conductivity. However, as described in Patent Document 1, for example, a sulfide-based inorganic solid electrolyte contains a sulfur compound that may generate toxic hydrogen sulfide when it reacts with water. Therefore, when the all-solid battery is damaged, there is a risk of generating hydrogen sulfide gas by reacting with moisture in the air. [0004] On the other hand, in recent years, as the performance of electric vehicles, hybrid ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0562H01M50/126H01M50/105
CPCH01M10/0562Y02E60/10Y02P70/50H01M50/105H01M50/129H01M50/131H01M2300/0068H01M10/052B32B15/088B32B15/09
Inventor 佐佐木美帆
Owner DAI NIPPON PRINTING CO LTD