Housing material for electricity storage device

Patent metadata

Field	Value
Publication number	US-2019348643-A1
Application number	US-201816482635-A
Country	US
Kind code	A1
Filing date	Jan 29, 2018
Priority date	Feb 8, 2017
Publication date	Nov 14, 2019
Grant date	—

Abstract

A packaging material for a power storage device, the packaging material being prepared by laminating at least a substrate layer, a metallic foil layer with an anti-corrosion treatment layer being disposed on one face or both faces thereof, and a sealant layer in this order, wherein the sealant layer comprises an associative organic compound having two or more associative functional groups and a hydrocarbon group having 4 or more carbon atoms.

First claim

1 . A packaging material for a power storage device, the packaging material being prepared by laminating at least:
a substrate layer; a metallic foil layer with an anti-corrosion treatment layer being disposed on one face or both faces thereof; and a sealant layer in this order, wherein the sealant layer comprises an associative organic compound having two or more associative functional groups and a hydrocarbon group having 4 or more carbon atoms.

2 . The packaging material for a power storage device according to claim 1 , wherein the associative organic compound is a sorbitol derivative represented by the following formula (1), or a nonitol derivative represented by the following formula (2).

(In the formula (1), R 1 to R 4 each independently represent a hydrogen atom or a hydrocarbon group having 1 to 6 carbon atoms, and in the formula (2), R 5 and R 6 each independently represent a hydrogen atom or a hydrocarbon group having 1 to 6 carbon atoms.)

3 . The packaging material for a power storage device according to claim 1 , wherein a content of the associative organic compound is 0.01 to 1.0% by mass based on a total mass of the sealant layer.

4 . The packaging material for a power storage device according to claim 1 , wherein the sealant layer consists of a plurality of layers, and at least one layer of the plurality of the layers is a layer comprising the associative organic compound.

5 . The packaging material for a power storage device according to claim 1 , wherein the sealant layer consists of a plurality of layers, and a layer closest to the metallic foil layer among the plurality of the layers is a layer comprising the associative organic compound.

6 . The packaging material for a power storage device according to claim 5 , wherein the layer closest to the metallic foil layer is a layer further comprising acid-modified polypropylene, and polypropylene with an atactic structure or a propylene-α-olefin copolymer with an atactic structure.

7 . The packaging material for a power storage device according to claim 1 , wherein the anti-corrosion treatment layer comprises cerium oxide, 1 to 100 parts by mass of phosphoric acid or a phosphate per 100 parts by mass of the cerium oxide, and a cationic polymer.

Assignees

• Toppan Printing Co Ltd

Inventors

• OGIHARA Yu
• IMAMOTO Junya
• Suzuta Masayoshi

Classifications

• H01M10/0525

  Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title

• B32B2307/714

  Inert, i.e. inert to chemical degradation, corrosion · CPC title

• B32B2323/10

  Polypropylene · CPC title

• B32B15/085 Primary

  comprising polyolefins · CPC title

• H01G11/78 Primary

  Cases; Housings; Encapsulations; Mountings · CPC title