The Possibility of Intermediate–Temperature (120 °C)–Operated Polymer Electrolyte Fuel Cells using Perfluorosulfonic Acid Polymer Membranes
| Autor: | Katsuyoshi Kakinuma, Hitoshi Taniguchi, Takayuki Asakawa, Toshihiro Miyao, Makoto Uchida, Yasuhito Aoki, Tsuyoshi Akiyama, Akihiro Masuda, Nobuyuki Sato, Akihiro Iiyama |
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| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Journal of The Electrochemical Society. 169:044522 |
| ISSN: | 1945-7111 0013-4651 |
| Popis: | The technical possibility and possible issues of an intermediate–temperature–operated polymer electrolyte fuel cell (@120 °C) is investigated with an eye toward the launching of new fuel cell heavy–duty vehicles on the world market. Commercial perfluorosulfonic acid membrane and a commercial Pt catalyst supported on carbon are selected to clarify the possible issues in the fuel cells. The cell resistivity at high humidity is less than 0.1 Ω cm–2. The mass activity (@ 0.85 V, Pt loading amount: 0.33 mgPt cm−2) approaches 850 A gPt –1. The high gas crossover rate through the membrane leads to decreased open circuit voltage, which necessitates the use of higher Pt loadings (>0.30 mgPt cm–2) at the cathode to mitigate the effect of the mixed potential. Pt degradation during 120 °C operation at low humidity is found to be much lower than that during 80 °C operation at high humidity based on the results of load–cycle durability testing. |
| Databáze: | OpenAIRE |
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