Alternative electrocatalyst support materials for polymer electrolyte fuel cells

Kazunari Sasaki, Fumiaki Takasaki, Zhiyun Noda, Shingo Hayashi, Yusuke Shiratori, Kohei Ito

Research output: Chapter in Book/Report/Conference proceedingConference contribution

68 Citations (Scopus)


Durability of electrocatalysts under severe operational conditions of polymer electrolyte fuel cells (PEFCs) is one of the most important technological issues to be improved. Alternative electrocatalyst support materials are desired, the use of which may solve problems such as oxidation-induced carbon support corrosion. One interesting solution is to use conductive oxide-based catalyst support. We focus our attention to SnO 2, known as an oxide semiconductor with a high electronic conductivity, as a possible electrocatalyst support material. Nanostracture, electrochemical properties and durability of carbon-free electrocatalysts, Pt/SnO2, Pt/Nb-SnO2, Pt/Sb-SnO2, and Pt/Al-SnO2, are investigated. Nano-carbon support materials are also studied as an another option of electrocatalyst support design. Distribution of Pt nanoparticles on such carbon support materials is characterized. Pt electrocatalysts with a diameter of a few nm could be prepared, supported on carbon nanofibers with different structures (including herringbone-type fibers, platelet-type fibers, and highly-conductive vapor-grown fibers) and carbon nanotubes. Technical merits and remaining issues in alternative electrocatalyst support materials selection are discussed.

Original languageEnglish
Title of host publicationPolymer Electrolyte Fuel Cells 10, PEFC 10
Number of pages10
Edition1 PART 1
Publication statusPublished - 2010
Event10th Polymer Electrolyte Fuel Cell Symposium, PEFC 10 - 218th ECS Meeting - Las Vegas, NV, United States
Duration: Oct 10 2010Oct 15 2010

Publication series

NameECS Transactions
Number1 PART 1
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737


Other10th Polymer Electrolyte Fuel Cell Symposium, PEFC 10 - 218th ECS Meeting
Country/TerritoryUnited States
CityLas Vegas, NV

All Science Journal Classification (ASJC) codes

  • Engineering(all)


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