Dai Nippon Printing Co., Ltd.

Ai Okano

Atsuko Takahagi

Miho Sasaki

Satoshi Shioda

Yoshihiro Kishimoto

Masanori Sawada

Kazufumi Kodani

Hidenari Kanetaka

Ryunosuke Shiota

A outer package material for all-solid-state batteries, said outer package material being composed of a multilayer body that is sequentially provided, from the outer side, with at least a base material layer, a barrier layer and a thermally fusible resin layer in this order, while exhibiting excellent insulating performance in a high temperature environment and excellent followability to the expansion and contraction of a solid electrolyte during charging and discharging of an all-solid-state battery. An outer package material for all-solid-state batteries, said outer package material being composed of a multilayer body that is sequentially provided, from the outer side, with at least a base material layer, a barrier layer and a thermally fusible resin layer in this order, wherein the thermally fusible resin layer is formed of a polybutylene terephthalate film that contains an elastomer.

Outer package material for all-solid-state batteries, method for producing same and all-solid-state battery

Provided is a barrier film which is less likely to undergo deterioration of gas barrier properties even after the Gelbo Flex test. The barrier film according to the present invention includes a barrier coat layer, an inorganic oxide vapor deposition layer, and a substrate layer in this order, the barrier coat layer being a cured film of a barrier coat composition containing: a hydrolyzed product of an alkoxysilane represented by the following General Formula (I): Si(OR). . . (I), wherein Rrepresents an organic functional group; a water-soluble polymer; and a hydrolyzed product of a silane coupling agent represented by the following General Formula (II): RSi(OR). . . (II), wherein Rand Reach independently represent an organic functional group, and n is 2 or 3.

Barrier film and packaging material

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Tokyo, Japan

Ai Okano