Standard Article

High dispersion catalysts including novel carbon supports

Fuel Cell Technology and Applications

Polymer electrolyte membrane fuel cells and systems (PEMFC)

Electro-catalysts

  1. T. Tada

Published Online: 15 DEC 2010

DOI: 10.1002/9780470974001.f303042

Handbook of Fuel Cells

Handbook of Fuel Cells

How to Cite

Tada, T. 2010. High dispersion catalysts including novel carbon supports. Handbook of Fuel Cells. .

Author Information

  1. Tanaka Kikinzoku Kogyo K. K., Technical Center, Kanagawa, Japan

Publication History

  1. Published Online: 15 DEC 2010

Abstract

Pt catalysts and PtRu catalysts supported on conductive carbon black (catalyst loading is from 10 wt% to 60 wt%) are normally used for proton exchange membrane fuel cells, since supported catalysts have higher active surface area than nonsupported catalysts because of uniform dispersion and smaller particles. Also, supported catalysts are more stable concerning catalyst agglomeration than nonsupported catalysts during fuel cell operation. In the case of Pt catalyst, the effect of carbon support on the catalyst's characterization and catalytic activity of the oxygen reduction reaction are investigated. The effect of metal loading on the catalytic activity of the oxygen reduction reaction is also discussed. In the case of PtRu catalyst, the influence of carbon support and metal loading on the catalyst's characterization and the CO tolerance of the catalysts are investigated. The effect of operating conditions and electrode structure on CO tolerance of the PtRu catalyst's anode are also discussed. Moreover, catalyst agglomeration phenomenon of Pt catalyst and degradation of CO tolerance of PtRu catalyst after fuel cell operation are investigated.

Keywords:

  • polymer electrolyte fuel cell;
  • electrocatalysts;
  • platinum;
  • platinum-ruthenium;
  • carbon supports;
  • catalyst loading;
  • cathode;
  • anode;
  • oxygen reduction reaction;
  • CO–tolerance;
  • agglomeration;
  • sintering;
  • long term stability