Chinese Journal of Catalysis ›› 2017, Vol. 38 ›› Issue (4): 673-682.DOI: 10.1016/S1872-2067(17)62807-9

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Fe, N, S-doped porous carbon as oxygen reduction reaction catalyst in acidic medium with high activity and durability synthesized using CaCl2 as template

Chi Chena,b, Zhiyou Zhoub, Yucheng Wangb, Xue Zhangb, Xiaodong Yangb, Xinsheng Zhanga, Shigang Suna,b   

  1. a State Key Laboratory of Chemical Engineering, College of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China;
    b State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China
  • Received:2017-02-17 Revised:2017-03-07 Online:2017-04-18 Published:2017-04-12
  • Supported by:

    This work was supported by the National Basic Research Program of China (973 Program, 2015CB932303) and the National Natural Science Foundation of China (21373175, 21621091).

Abstract:

Proton exchange membrane fuel cells suffer from the sluggish kinetics of the oxygen reduction reaction (ORR) and the high cost of Pt catalysts. In the present work, a high-performance ORR catalyst based on Fe, N, S-doped porous carbon (FeNS-PC) was synthesized using melamine formaldehyde resin as C and N precursors, Fe(SCN)3 as Fe and S precursors, and CaCl2 as a template via a two-step heat treatment without a harsh template removal step. The results show that the catalyst treated at 900℃ (FeNS-PC-900) had a high surface area of 775 m2/g, a high mass activity of 10.2 A/g in an acidic medium, and excellent durability; the half-wave potential decreased by only 20 mV after 10000 potential cycles. The FeNS-PC-900 catalyst was used as the cathode in a proton exchange membrane fuel cell and delivered a peak power density of 0.49 W/cm2. FeNS-PC-900 therefore has good potential for use in practical applications.

Key words: Non-precious metal catalyst, Oxygen reduction reaction, Proton exchange membrane fuel cell, Fe, N, S-doped porous carbon, Melamine formaldehyde resin