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- Title
S-Doping of an Fe/N/C ORR Catalyst for Polymer Electrolyte Membrane Fuel Cells with High Power Density.
- Authors
Wang, Yu ‐ Cheng; Lai, Yu ‐ Jiao; Song, Lin; Zhou, Zhi ‐ You; Liu, Jian ‐ Guo; Wang, Qiang; Yang, Xiao ‐ Dong; Chen, Chi; Shi, Wei; Zheng, Yan ‐ Ping; Rauf, Muhammad; Sun, Shi ‐ Gang
- Abstract
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 A g−1 at 0.80 V) in 0.1 M 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.
- Subjects
IRON catalysts; ELECTROCATALYSTS; ELECTROCATALYSIS; CATALYTIC doping; PROTON exchange membrane fuel cells
- Publication
Angewandte Chemie, 2015, Vol 127, Issue 34, p10045
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.201503159