Influence of Heat Resistance of Precursor in Cathode Catalysts for Polymer Electrolyte Fuel Cell on Oxygen Reduction Activity

Shingai, Shota; Miyata, Shun; Arai, Kento; Ichikawa, Tsukasa; Kobayashi, Izuru; Nemoto, Nobukatsu; Akimoto, Masaji; Kitagawa, Yudai; Yoshioka, Koshiro

doi:10.1246/cl.180901

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2021

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“…In the study processes, we have focused on improving the content of C-N bonds. [8,9] As a result, the performance of the catalyst was revealed to be improved as the content of nitrogen increased. Figure 1 shows the composites prepared from the polymerization of metal phthalocyanines and diamino-functionalized aromatic compounds (P1-P3).…”

Section: Introductionmentioning

confidence: 99%

Influence of Metal Desorption of Cathode Catalysts for Polymer Electrolyte Fuel Cells on Oxygen Reduction Activity

Arai

Matsumoto

Icikawa

et al. 2021

Trans. Mat. Res. Soc. Japan

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Several composites were obtained by polycondensation reaction using metal phthalocyanine having carboxy groups and p-phenylenediamine. The obtained composites were pyrolyzed at 900 °C in a hydrogen stream to afford the cathode catalysts for polymer electrolyte fuel cells (PEFC). The catalysts were treated with aqua regia to investigate the influence of metal content on oxygen reduction activity (ORA). Comparing the ORA of the catalysts before and after the aqua regia treatment, the ones containing metal had higher activity. It became clear that the presence of metal is indispensable for improving ORA.

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Section: Introductionmentioning

confidence: 99%