P-Doped SnO2 Powder as a Support for PEFC Cathode. (8th September 2020)

• Record Type: Journal Article
• Authors: Inoue, Yuta; Matsuzawa, Koichi; MA, Yongbing; Ohgi, Yoshiro; Nagai, Takaaki; Kuroda, Yoshiyuki; Yamamoto, Shunya; Ishihara, Akimitsu
• Is Part Of: ECS transactions. Volume 98:Number 9(2020)
• Page Start: 565
• Page End: 572
• Publication Date: 2020-09-08
• Subjects: Electrochemistry -- Periodicals; Electrochemistry; Periodicals; Electronic journals; Electronic journal; 541.37
• DOI: 10.1149/09809.0565ecst
• Languages: English
• ISSNs: 1938-5862

Abstract

Abstract : 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.