Development of durable electrocatalysts for PEFC through graphitization of carbon support surface

Xiaojing Zhao, Akari Hayashi, Zhiyun Noda, Kazunari Sasaki

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

2 Citations (Scopus)

Abstract

With the aim of developing durable electrocatalysts for PEFC, their durability with different carbon supports was evaluated electrochemically. During our study, Pt deposited Ketjen Black carbon was found to lose most of electrochemical active surface area after the potential cycle tests, and then a possible mechanism for that was investigated. We believe two different mechanisms probably occur at the same time. Many of Pt particles are dissolved into the electrolyte solution either as Pt ion or Pt nanoparticles. Some of Pt particles are also embedded into the hole formed on the carbon surface owing to carbon corrosion. However, the effect of these two factors was rather small for Vulcan carbon. Moreover, on the graphitized surface, such problems were mostly overcome. Consequently, graphitization of the carbon surface is a simple but useful technique to improve the durability of electrocatalysts.

Original languageEnglish
Title of host publicationAdvances in Low Temperature Electrolyzer and Fuel Cell Technology
Subtitle of host publicationIn Honor of Anthony B. (Tony) LaConti
PublisherElectrochemical Society Inc.
Pages23-29
Number of pages7
Edition12
ISBN (Print)9781607684640
DOIs
Publication statusPublished - Jan 1 2013
EventSymposium on Advances in Low Temperature Electrolyzer and Fuel Cell Technology: In Honor of Anthony B. (Tony) LaConti - 223rd Meeting of the Electrochemical Society - Toronto, ON, Canada
Duration: May 12 2013May 16 2013

Publication series

NameECS Transactions
Number12
Volume53
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Other

OtherSymposium on Advances in Low Temperature Electrolyzer and Fuel Cell Technology: In Honor of Anthony B. (Tony) LaConti - 223rd Meeting of the Electrochemical Society
CountryCanada
CityToronto, ON
Period5/12/135/16/13

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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    Zhao, X., Hayashi, A., Noda, Z., & Sasaki, K. (2013). Development of durable electrocatalysts for PEFC through graphitization of carbon support surface. In Advances in Low Temperature Electrolyzer and Fuel Cell Technology: In Honor of Anthony B. (Tony) LaConti (12 ed., pp. 23-29). (ECS Transactions; Vol. 53, No. 12). Electrochemical Society Inc.. https://doi.org/10.1149/05312.0023ecst