The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 05, 2019
Filed:
Aug. 31, 2017
Applicants:
Hyundai Motor Company, Seoul, KR;
Kia Motors Corporation, Seoul, KR;
Inventors:
Bo Ki Hong, Seoul, KR;
Jong Kil Oh, Gyeonggi-do, KR;
Assignees:
Hyundai Motor Company, Seoul, KR;
Kia Motors Corporation, Seoul, KR;
Primary Examiner:
Int. Cl.
CPC ...
H01M 4/88 (2006.01); H01M 8/1004 (2016.01); H01M 8/04223 (2016.01); H01M 4/86 (2006.01); H01M 4/92 (2006.01); H01M 8/1018 (2016.01);
U.S. Cl.
CPC ...
H01M 4/8814 (2013.01); H01M 4/8605 (2013.01); H01M 4/8828 (2013.01); H01M 4/8882 (2013.01); H01M 4/926 (2013.01); H01M 8/04253 (2013.01); H01M 8/1004 (2013.01); H01M 2008/1095 (2013.01); H01M 2250/20 (2013.01); Y02E 60/521 (2013.01); Y02P 70/56 (2015.11); Y02T 90/32 (2013.01);
Abstract
A method for improving freezing resistance of a membrane electrode assembly is provided. In particular, the method improves freezing resistance of a membrane electrode assembly including conducting drying and heat treatment under certain conditions to produce an electrode that reduces formation of macro-cracks and micro-cracks in the electrode. Accordingly, water does not permeate the electrode excessively and the electrode does not break even when frozen.