文献类型：期刊文献

英文题名：A Highly Efficient Catalyst toward Oxygen Reduction Reaction in Neutral Media for Microbial Fuel Cells

作者：Su, Yunhe[1];Zhu, Yihua[1];Yang, Xiaoling[1];Shen, Jianhua[1];Lu, Jindan[1];Zhang, Xiaoyan[2];Chen, Jianding[1];Li, Chunzhong[1]

机构：[1]E China Univ Sci & Technol, Key Lab Ultrafine Mat, Minist Educ, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, Sch Biotechnol, Shanghai 200237, Peoples R China

年份：2013

卷号：52

期号：18

起止页码：6076

外文期刊名：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

收录：;EI(收录号：20132016327870);WOS:【SCI-EXPANDED(收录号:WOS:000318838900002)】；

基金：We thank the National Natural Science Foundation of China (Nos. 21236003, 21206042, 20925621, 20976054, and 21176083), the Fundamental Research Funds for the Central Universities, the Program for Changjiang Scholars and Innovative Research Team in University (No. IRT0825), and the Shanghai Leading Academic Discipline Project (Project No. B502) for financial support.

语种：英文

外文关键词：Nitrogen - Cathodes - Nanocomposites - Oxygen - Electrolytes - Electrolytic reduction - Catalyst activity - Doping (additives) - Graphene

摘要：A nanocomposite of cobaltosic oxide and nitrogen-doped graphene (Co3O4/N-G) was prepared by the facile hydrothermal method. Morphology characterizations show that the Co3O4 nanoparticles with crystalline spinel structure are uniformly dispersed on the nitrogen-doped graphene nanosheets, and the graphene weight fraction in Co3O4/N-G composite is estimated to be similar to 20%. Meanwhile, electrochemical measurements reveal that the as-prepared Co3O4/N-G nanocomposite exhibits a high catalytic activity and long-term stability in neutral electrolyte. Moreover, the use of Co3O4/N-G as cathode catalyst for oxygen reduction in microbial fuel cells (MFCs) to produce electricity was also investigated. The obtained maximum power density was 1340 +/- 10 mW m(-2), which was as high as almost four times that of the plain cathode (340 +/- 10 mW m(-2)), and only slightly lower than that of a commercial Pt/C catalyst (1470 +/- 10 mW m(-2)). All the results prove that a Co3O4/N-G hybrid can be a good alternative to platinum catalysts for practical MFC applications.