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:
Apr. 22, 2014
Filed:
Jul. 19, 2010
Chun Zhang, Tallahassee, FL (US);
Wei Zhu, Tallahassee, FL (US);
Jian-ping Zheng, Tallahassee, FL (US);
Zhiyong Liang, Tallahassee, FL (US);
Ben Wang, Tallahassee, FL (US);
Chun Zhang, Tallahassee, FL (US);
Wei Zhu, Tallahassee, FL (US);
Jian-ping Zheng, Tallahassee, FL (US);
Zhiyong Liang, Tallahassee, FL (US);
Ben Wang, Tallahassee, FL (US);
Florida State University Research Foundation, Inc., Tallahassee, FL (US);
Abstract
A membrane electrode assembly (MEA) for a fuel cell comprising a gradient catalyst structure and a method of making the same. The gradient catalyst structure can include a plurality of catalyst nanoparticles, e.g., platinum, disposed on layered buckypaper. The layered buckypaper can include at least a first layer and a second layer and the first layer can have a lower porosity compared to the second layer. The gradient catalyst structure can include single-wall nanotubes, carbon nanofibers, or both in the first layer of the layered buckypaper and can include carbon nanofibers in the second layer of the layered buckypaper. The MEA can have a catalyst utilization efficiency of at least 0.35 g/kW or less.