US 11,799,166 B2
Li-ion battery having improved safety against combustion
Dennis J. Kountz, West Chester, PA (US); Alan D. English, Chadds Ford, PA (US); Paul Douglas Brothers, Chadds Ford, PA (US); James R. Hoover, Newark, DE (US); and Donna Lynn Visioli, Lower Gwynedd, PA (US)
Assigned to THE CHEMOURS COMPANY FC, LLC, Wilmington, DE (US)
Filed by THE CHEMOURS COMPANY FC LLC, Wilmington, DE (US)
Filed on Sep. 26, 2019, as Appl. No. 16/583,740.
Application 16/583,740 is a continuation of application No. 14/755,160, filed on Jun. 30, 2015, granted, now 10,566,592.
Claims priority of provisional application 62/060,749, filed on Oct. 7, 2014.
Claims priority of provisional application 62/024,117, filed on Jul. 14, 2014.
Prior Publication US 2020/0052266 A1, Feb. 13, 2020
Int. Cl. H01M 50/383 (2021.01); H01M 10/42 (2006.01); H01M 50/30 (2021.01); H01M 50/342 (2021.01); H01M 10/058 (2010.01); H01M 50/35 (2021.01); H01M 50/103 (2021.01); H01M 50/143 (2021.01); H01M 50/119 (2021.01); H01M 10/0525 (2010.01)
CPC H01M 50/383 (2021.01) [H01M 10/058 (2013.01); H01M 10/0525 (2013.01); H01M 10/4235 (2013.01); H01M 50/103 (2021.01); H01M 50/119 (2021.01); H01M 50/143 (2021.01); H01M 50/30 (2021.01); H01M 50/3425 (2021.01); H01M 50/35 (2021.01)] 26 Claims
OG exemplary drawing
 
1. A process for forming a Li-ion battery having a region of electrochemical activity and an enclosure therefor, said process comprising:
forming a first chamber within said enclosure separate from said region of electrochemical activity;
providing a vent in said enclosure;
positioning said first chamber between said vent and said region of electrochemical activity; and
positioning a composition comprising at least one combustion abatement agent within said first chamber, wherein said at least one combustion abatement agent comprises liquid fluoropolyether, whereby said composition is not in contact with said region of electrochemical activity;
said first chamber being pressure and/or heat sensitive, whereby when said region of electrochemical activity overheats, said first chamber is breached, allowing said at least one combustion abatement agent to contact said region of electrochemical activity to abate combustion of said region of electrochemical activity, and said vent releases pressure upon said overheating.