2024-03-29T05:59:19Z
https://nagoya.repo.nii.ac.jp/oai
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2023-01-16T05:07:22Z
488:489:490
Performance of an Intermediate-Temperature Fuel Cell Using a Proton-Conducting Sn0.9In0.1P2O7 Electrolyte
Heo, Pilwon
49106
Shibata, Hidetaka
49107
Nagao, Masahiro
49108
Hibino, Takashi
49109
Sano, Mitsuru
49110
tin compounds
indium compounds
ionic conductivity
electrolytes
electrochemical electrodes
proton exchange membrane fuel cells
catalysts
Performance of a fuel cell using Sn0.9In0.1P2O7 as the electrolyte was evaluated in the temperature range of 150–300°C under unhumidified conditions. The IR drop and electrode overpotential of the cell were measured separately by the current interruption method. The dc conductivity values of the electrolyte between 150 and 300°C , estimated from the IR drop, were comparable to the ac conductivity values (1.48×10^−1-1.95×10^−1 Scm^−1) of the electrolyte. The cell performance was improved by forming an intermediate layer consisting of Sn0.9In0.1P2O7 and Pt/C catalyst powders at the interface between the electrolyte and cathode, which significantly reduced the cathode polarization. As a result, the peak power density reached 264mWcm^−2 at 250°C using the 0.35-mm -thick electrolyte. The present fuel cell also showed high stability at low relative humidities (pH2O≈0.0075atm) and 10% CO concentration.
journal article
The Electrochemical Society
2006
application/pdf
Journal of The Electrochemical Society
5
153
A897
A901
http://dx.doi.org/10.1149/1.2183927
http://hdl.handle.net/2237/18427
0013-4651
https://nagoya.repo.nii.ac.jp/record/16418/files/J_Electrochem_Soc_2006-Heo-A897-901.pdf
eng
https://doi.org/10.1149/1.2183927
© The Electrochemical Society, Inc. 2006. All rights reserved. Except as provided under U.S. copyright law, this work may not be reproduced, resold, distributed, or modified without the express permission of The Electrochemical Society (ECS). The archival version of this work was published in Journal of The Electrochemical Society. v.153, n.5, 2006, p.A897-A901.