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wanggufan木蟲 (著名寫手)
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[交流]
Scientific Reports高性能碳基燃料電池催化劑
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| 該催化劑的氧還原催化性能已十分接近商品的鉑碳催化劑,催化劑的單電池測試結(jié)果也處于國際領先行列。Proton exchange membrane fuel cells are promising candidates for a clean and efficient energy conversion in the future, the development of carbon based inexpensive non-precious metal ORR catalyst has becoming one of the most attractive topics in fuel cell field. Herein we report a Fe- and N- doped carbon catalyst Fe-PANI/C-Mela with graphene structure and the surface area up to 702 m2 g−1. In 0.1 M HClO4 electrolyte, the ORR onset potential for the catalyst is high up to 0.98 V, and the half-wave potential is only 60 mV less than that of the Pt/C catalyst (Loadings: 51 μg Pt cm−2). The catalyst shows high stability after 10,000 cyclic voltammetry cycles. A membrane electrode assembly made with the catalyst as a cathode is tested in a H2-air single cell, the maximum power density reached ~0.33 W cm2 at 0.47 V.。[ Last edited by wanggufan on 2013-5-22 at 12:39 ] |
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