期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 54, 期 34, 页码 9907-9910出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201503159
关键词
electrocatalysis; fuel cells; iron; oxygen reduction reaction; sulfur
资金
- Major State Basic Research Development Program of China [2015CB932300]
- NSFC [21373175, 21321062, 21361140374]
- Program for New Century Excellent Talents in University [NECT-11-0301]
Fe/N/C is a promising non-Pt electrocatalyst for the oxygen reduction reaction (ORR), but its catalytic activity is considerably inferior to that of Pt in acidic medium, the environment of polymer electrolyte membrane fuel cells (PEMFCs). An improved Fe/N/C catalyst (denoted as Fe/N/C-SCN) derived from Fe(SCN)(3), poly-m-phenylenediamine, and carbon black is presented. The advantage of using Fe(SCN)(3) as iron source is that the obtained catalyst has a high level of S doping and high surface area, and thus exhibits excellent ORR activity (23 Ag-1 at 0.80 V) in 0.1M H2SO4 solution. When the Fe/N/C-SCN was applied in a PEMFC as cathode catalyst, the maximal power density could exceed 1 W cm(-2).
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