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:
Feb. 28, 2012
Filed:
Mar. 01, 2007
Sreekumar Kurungot, Toyota, JP;
Hirokazu Ishimaru, Toyota, JP;
Sreekumar Kurungot, Toyota, JP;
Hirokazu Ishimaru, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Abstract
This invention intends to improve the catalyst efficiency by sufficiently providing a triple phase boundary where reaction gas, catalysts, and electrolytes meet in carbon nanohorns. With the utilization of the resulting MEA, the electrode reactions are allowed to effectively proceed, and the power generation efficiency of a fuel cell is improved to result in a solid polymer fuel cell with excellent properties. Such solid polymer fuel cell comprises electrodes having a catalyst layer comprising: a carrier comprising a carbon nanohorn aggregate; catalytic metals supported on the carrier comprising a carbon nanohorn aggregate; and polymer electrolytes coating the carrier comprising a carbon nanohorn aggregate, wherein the proportion of the polymer electrolyte to the carbon nanohorn aggregate is 0.32:1 to 0.70:1 by weight.