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High Performance Fe- and N- Doped Carbon Catalyst with Graphene Structure for Oxygen Reduction

2013; Nature Portfolio; Volume: 3; Issue: 1 Linguagem: Inglês

10.1038/srep01765

2045-2322

Hongliang Peng, Zaiyong Mo, Shijun Liao, Huagen Liang, Lijun Yang, Fan Luo, Huiyu Song, Yiliang Zhong, Bingqing Zhang,

Advanced battery technologies research

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.