期刊
JOURNAL OF POWER SOURCES
卷 307, 期 -, 页码 152-159出版社
ELSEVIER
DOI: 10.1016/j.jpowsour.2015.12.110
关键词
Oxygen reduction reaction; Polymeric networks; Dope; Electrocatalysts; Fuel cells
资金
- Program for NSFC [51272219]
- RFDP [20124301110006]
- Construct Program of Key Discipline in Hunan Province
Carbon-supported transition metal/nitrogen (M-N/C) materials are considered as one of the most promising electrocatalysts for the oxygen reduction reaction (ORR) owing to their high ORR electrocatalytic activity, long-term stability, and excellent methanol tolerance. So far only a few examples of such catalysts are prepared from N-containing polymers. Herein, we report a novel Fe-N/C catalyst using a nitrogen-rich polymeric network and iron(II) acetate as the precursors. The porous polymeric network is fabricated by one-step Friedel Crafts reaction of a low-cost cross-linker, formaldehyde dimethyl acetal, with 2,4,6-tripyrrol-1,3,5-triazine. Compared to commercial Pt/C catalyst, the as-prepared Fe-N/C electrocatalyst exhibits superior ORR activity in alkaline electrolyte, and comparable ORR activity in acidic medium. The results obtained are significant for the development of new Fe-N/C electrocatalysts for fuel cells. (C) 2015 Elsevier B.V. All rights reserved.
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