Compositions for abating combustion of li-ion batteries

Patent metadata

Field	Value
Publication number	US-2016008649-A1
Application number	US-201514755207-A
Country	US
Kind code	A1
Filing date	Jun 30, 2015
Priority date	Jul 14, 2014
Publication date	Jan 14, 2016
Grant date	—

Abstract

A composition is provided that is capable of abating combustion of a Li-ion battery, comprising liquid fluoropolyether and at least one combustion abatement agent being other than fluoropolymer, examples of such agent including one or more compounds that exhibit one or more of the following characteristics of being a hydrate, carbonate, bicarbonate or sulfate, or are phosphorus or bromine containing or that form a char and/or exhibit intumescence upon heating.

First claim

What is claimed is:

1 . Composition capable of abating combustion of a Li-ion battery, comprising liquid fluoropolyether and at least one combustion abatement agent being other than fluoropolymer.

2 . The composition of claim 1 wherein said composition is in the liquid state.

3 . The composition of claim 1 thickened to be in the semi-solid state.

4 . The composition of claim 3 wherein said at least one combustion abatement agent thickens said composition to be in said semi-solid state.

5 . The composition of claim 3 containing solid fluoropolymer.

6 . The composition of claim 5 wherein said solid fluoropolymer thickens said composition to be in said semi-solid state.

7 . The composition of claim 5 wherein said solid fluoropolymer and said combustion abatement agent thicken said composition to be in said semi-solid state.

8 . The composition of claim 1 wherein said combustion abatement agent upon heating exhibits combustion abatement by (i) heat absorption, (ii) dilution of combustibles, (iii) becoming intumescent, (iv) forming char, and/or (v) depletion of combustibles.

9 . The composition of claim 1 wherein said combustion abatement agent, upon thermally-induced decomposition, emits water, nitrogen, nitrogen dioxide, carbon dioxide, or sulfur dioxide.

10 . The composition of claim 1 , wherein said combustion abatement agent is inorganic hydrate, carbonate, bicarbonate, sulfate, bisulfite, or bisulfate.

11 . The composition of claim 1 wherein said combustion abatement agent is bromine containing.

12 . The composition of claim 1 wherein said combustion abatement agent is carbon black or graphite.

13 . The composition of claim 1 wherein said combustion abatement agent is phosphorus containing.

14 . The composition of claim 1 wherein said combustion abatement agent is inorganic.

15 . The composition of claim 1 and additionally containing decomposition catalyst.

16 . The composition of claim 1 wherein said decomposition catalyst is a Lewis acid.

Assignees

• Chemours Co Fc Llc

Inventors

• Kountz Dennis J
• English Alan D
• Leung Lam H
• Unlu Murat

Classifications

• C09K21/00 Primary

  Fireproofing materials (for use in a particular application, see the relevant places, e.g. fireproofing of wood B27K, of polymers C08, of textiles D06M, of paper D21H; fireproof paints C09D5/18) · CPC title

• A62D1/0028

  Liquid extinguishing substances (A62D1/0092 takes precedence) · CPC title

• A62D1/00 Primary

  Fire-extinguishing compositions; Use of chemical substances in extinguishing fires (fireproof paints C09D5/18; fireproofing materials C09K21/00) · CPC title

• H01M10/0525 Primary

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

• H01M10/4235 Primary

  Safety or regulating additives or arrangements in electrodes, separators or electrolyte (H01M10/4242 takes precedence) · CPC title