期刊
NANO ENERGY
卷 30, 期 -, 页码 503-510出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nanoen.2016.10.051
关键词
Graphene; Mesoporous structure; Non-noble metal catalyst; Oxygen reduction reaction; Oxygen evolution reaction; Electrocatalyst
类别
资金
- University of Akron fund
- Senior Visiting Scholar Foundation of Key Laboratory in Fudan University
- National Basic Research Program of China (973 program) [2014CB845602]
- Natural National Science Foundation of China [21373052]
- Shanghai International Science and Technology Cooperation Project [15520720100]
- 1000 Youth Talents Plan, Natural National Science Foundation of China [51103026, 51373035, 51373040]
- Shanghai Scientific and Technological Innovation Project [11JC1400600, 124119a2400]
- International Science and Technology Cooperation Program of China [2014DFE40130]
Highly ordered N-doped mesoporous carbon/graphene frameworks (N-MCF/N-MGF) were prepared using superlattice of self-assembled Fe3O4 nanoparticles as template. The prepared N-MCF catalyst shows enhanced oxygen reduction reaction (ORR) activity compared with commercial Pt/C catalyst. The N-MGF catalyst demonstrates lower oxygen evolution reaction (OER) overpotential (324 mV at 10 mA cm(-2)) than most of the previously reported carbon based materials, non-noble metal oxides and their hybrids, and comparable with noble metal oxides (ruthenium/iridium oxide, RuO2 and IrO2) catalysts. The prepared N-MGF catalysts also exhibit negligible mass transfer resistance, good durability and bifunctionality in ORR and OER. The significantly improved electrocatalytic performance results from their large surface area, ordered pores, excellent internal diffusion property, and superior intrinsic conductivity. The materials show great potential for various applications in energy conversion and storage, including fuel cells, electrolyzers and metal-air batteries.
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