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:
Sep. 13, 2011
Filed:
Nov. 22, 2006
Applicant:
Min-kyu Song, Yongin-si, KR;
Inventor:
Min-Kyu Song, Yongin-si, KR;
Assignee:
Samsung SDI Co., Ltd., Gyeonggi-do, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 4/02 (2006.01); H01M 4/04 (2006.01); H01M 4/88 (2006.01);
U.S. Cl.
CPC ...
Abstract
The membrane-electrode assembly for a fuel cell includes a polymer electrolyte membrane, and an anode and a cathode disposed on each side of the polymer electrolyte membrane and including a catalyst layer. The catalyst layer has a first catalyst layer that has a porosity of less than or equal to about 40% and is disposed to contact the polymer electrolyte membrane, and a second catalyst layer that has a porosity of more than or equal to about 50% and is disposed on the first catalyst layer.