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:
Jun. 26, 2012
Filed:
Jul. 18, 2005
Kunihiro Nakato, Gunma, JP;
Atsuo Sonai, Kanagawa, JP;
Kunihiro Nakato, Gunma, JP;
Atsuo Sonai, Kanagawa, JP;
Sanyo Electric Co., Ltd., Osaka, JP;
Samsung Electronics Co., Ltd., Gyeonggi-Do, KR;
Samsung SDI Co., Ltd., Gyeonggi-Do, KR;
Abstract
A solid polymer fuel cell stack has a layered product comprised of a plurality of cells stacked, and is so structured that the layered product is fastened by end plates on both sides thereof via a current collector and an insulating plate on each side. Each cell is structured such that an MEA is sandwiched between an anode-side plate, which is provided with a fuel path disposed counter to an anode of the MEA, and a cathode-side plate, which is provided with an oxidizing agent path disposed counter to a cathode of the MEA. An MEA is comprised of a solid polymer electrolyte membrane, an anode and a cathode. The solid polymer electrolyte membrane is composed of powder of basic polymer such as polybenzimidazole, strong acid such as phosphoric acid impregnated with the basic polymer, and binder such as fluorocarbon resin.