Hydroxide Ion Conducting Antimony(V)-Doped Tin Pyrophosphate Electrolyte for Intermediate-Temperature Alkaline Fuel Cells†
Corresponding Author
Prof. Dr. Takashi Hibino
Graduate School of Environmental Studies, Nagoya University, Nagoya 464-8601 (Japan)
Graduate School of Environmental Studies, Nagoya University, Nagoya 464-8601 (Japan)Search for more papers by this authorDr. Yanbai Shen
Graduate School of Environmental Studies, Nagoya University, Nagoya 464-8601 (Japan)
Search for more papers by this authorMasakazu Nishida
Research Institute Instrumentation Frontier, National Institute of Advanced Industrial Science and Technology, Nagoya 463-8560 (Japan)
Search for more papers by this authorDr. Masahiro Nagao
Graduate School of Environmental Studies, Nagoya University, Nagoya 464-8601 (Japan)
Search for more papers by this authorCorresponding Author
Prof. Dr. Takashi Hibino
Graduate School of Environmental Studies, Nagoya University, Nagoya 464-8601 (Japan)
Graduate School of Environmental Studies, Nagoya University, Nagoya 464-8601 (Japan)Search for more papers by this authorDr. Yanbai Shen
Graduate School of Environmental Studies, Nagoya University, Nagoya 464-8601 (Japan)
Search for more papers by this authorMasakazu Nishida
Research Institute Instrumentation Frontier, National Institute of Advanced Industrial Science and Technology, Nagoya 463-8560 (Japan)
Search for more papers by this authorDr. Masahiro Nagao
Graduate School of Environmental Studies, Nagoya University, Nagoya 464-8601 (Japan)
Search for more papers by this authorThis work was supported by KAKENHI (grant number 21350073).
Graphical Abstract
Ion conductor: A series of Sn1–xAxP2O7 (AV=V, Nb, Ta, and Sb) compounds was synthesized, among which Sn0.92Sb0.08P2O7 (see picture) showed the highest hydroxide ion conductivity in the temperature range of 50–200 °C (0.08 S cm−1 at 100 °C and 0.05 S cm−1 at 200 °C). This high conductivity was also confirmed under fuel-cell-operating conditions.
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