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. 15, 2011
Filed:
Dec. 29, 2008
Hyoung-juhn Kim, Suwon-si, KR;
Jeung Woo Lee, Busanjin-gu, KR;
Jong Hyung Jang, Yongin-si, KR;
Eun AE Cho, Seoul, KR;
Sung Pil Yoon, Seongnam-si, KR;
Suk-woo Nam, Seoul, KR;
IN Hwan OH, Seoul, KR;
Seong Ahn Hong, Seoul, KR;
Tae Hoon Lim, Seoul, KR;
Hyoung-Juhn Kim, Suwon-si, KR;
Jeung Woo Lee, Busanjin-gu, KR;
Jong Hyung Jang, Yongin-si, KR;
Eun Ae Cho, Seoul, KR;
Sung Pil Yoon, Seongnam-si, KR;
Suk-woo Nam, Seoul, KR;
In Hwan Oh, Seoul, KR;
Seong Ahn Hong, Seoul, KR;
Tae Hoon Lim, Seoul, KR;
Korea Institute of Science & Technology, Seoul, KR;
Abstract
Disclosed is a membrane-electrode assembly (MEA) that prevents an electrolyte membrane from being damaged upon the fabrication of a single cell or a stack of fuel cells. The MEA further includes a guard gasket interposed between conventional gaskets, wherein the guard gasket has a thickness corresponding to 70%-95% of the thickness of the electrolyte membrane. The MEA ensures mechanical protection of the electrolyte membrane, and thus prevents the electrolyte membrane from being damaged by an excessive binding pressure upon the fabrication of a single cell or a stack of fuel cells. Furthermore, the contact resistance between the electrolyte membrane and the catalyst layer and the contact resistance between the gas diffusion layer and the catalyst layer can be minimized, thereby improving the quality of a fuel cell.