P-Doped SnO2 Powder as a Support for PEFC Cathode

The possibility of commercial P-doped SnO2 was evaluated as a non-carbon support for PEFC cathodes. The effect of heat-treatment under various conditions on the physical properties of the P-doped SnO2 was investigated. The P-doped SnO2 was sensitive by the heat-treatment in reductive atmosphere, 4%H...

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Published inECS transactions Vol. 98; no. 9; pp. 565 - 572
Main Authors Inoue, Yuta, Matsuzawa, Koichi, MA, Yongbing, Ohgi, Yoshiro, Nagai, Takaaki, Kuroda, Yoshiyuki, Yamamoto, Shunya, Ishihara, Akimitsu
Format Journal Article
LanguageEnglish
Japanese
Published The Electrochemical Society, Inc 08.09.2020
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Summary:The possibility of commercial P-doped SnO2 was evaluated as a non-carbon support for PEFC cathodes. The effect of heat-treatment under various conditions on the physical properties of the P-doped SnO2 was investigated. The P-doped SnO2 was sensitive by the heat-treatment in reductive atmosphere, 4%H2/Ar. The surface area was hardly affected by the heat-treatment in air or Ar even at high temperature such as 900℃. On the other hand, the conductivity was dramatically affected by the atmosphere during the heat-treatment. The heat-treatment in Ar at higher temperature rather increased in the conductivity, whereas the heat-treatment in air caused the drastic decrease in the conductivity. This difference might be responsible for the formation and extinction of the oxygen vacancies.
ISSN:1938-5862
1938-6737
DOI:10.1149/09809.0565ecst