国 际 竹 藤 组 织

国 际 竹 藤 组 织

高级搜索

-
返回

Nitrogen-enriched carbon from bamboo fungus with superior oxygen reduction reaction activity

竹藤论文

期刊/会议:

JOURNAL OF MATERIALS CHEMISTRY A

Language:

English

作者:

Gao Shuyan; Fan Hao; Zhang Shuxia

年份:

2014

卷:

2

期:

43

页码:

18263-18270

Fuel cells are promising candidates for clean and high-efficient energy conversion in the future. The development of carbon-based inexpensive metal-free ORR catalysts has become one of the most attractive topics in the fuel cell field. Herein, we report a N-doped carbon catalyst with a surface area of up to 1895.5 m(2) g(-1) using a natural product (bamboo fungus) as the starting material. In 0.1 M KOH electrolyte, the ORR onset potential for the catalyst is high up to 0.089 V vs. Ag/AgCl. Moreover, it shows superior stability, fuel crossover resistance, and selective activity to a commercial Pt/C catalyst. In addition, the sample displays excellent stability, i.e. no obvious decrease in current was observed after 1000 continuous cycles between -0.7 and 0.3 V in O-2-saturated 0.1 M KOH. Moreover, both the structural characterizations and electrochemical tests verify that the treatment techniques of biomass have an important impact on the materials.