Chinese Journal of Catalysis ›› 2020, Vol. 41 ›› Issue (5): 858-867.DOI: 10.1016/S1872-2067(19)63507-2

• Articles • Previous Articles     Next Articles

Iron-incorporated nitrogen-doped carbon materials as oxygen reduction electrocatalysts for zinc-air batteries

Kai Chena,b, Suqin Cia, Qiuhua Xua, Pingwei Caib, Meizhen Lia, Lijuan Xianga, Xi Hua, Zhenhai Wenb   

  1. a Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang 330063, Jiangxi, China;
    b CAS Key Laboratory of Design and Assembly of Functional Nanostructures, and Fujian Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, Fujian, China
  • Received:2019-10-12 Revised:2019-11-10 Online:2020-05-18 Published:2019-12-31
  • Contact: S1872-2067(19)63507-2
  • Supported by:
    The work was supported by the National Natural Science foundation of China (21566025, 21875253), the Science Fund of Jiangxi Province for Distinguished Young Scholars (20162BCB23044), and the Jiangxi Provincial Graduate Innovation Special Fund Project (YC2018-S362).

Abstract: The application of electrocatalysts for the oxygen reduction reaction (ORR) is vital in a variety of energy conversion technologies. Exploring low-cost ORR catalysts with high activity and long-term stability is highly desirable, although it still remains challenging. Herein, we report a facile and reliable route to convert ZIF-8 modified by Fe-phenanthroline into Fe-incorporated and N-doped carbon dodecahedron nanoarchitecture (Fe-NCDNA), in which carbon nanosheets are formed in situ as the building blocks with uniform Fe-N-C species decoration. Systematic electrochemical studies demonstrate that the as-synthesized Fe-NCDNA electrocatalyst possesses highly attractive catalytic features toward the ORR in terms of activity and durability in both alkaline and neutral media. The Zn-air battery with the optimal Fe-NCDNA catalyst as the cathode performs impressively, delivering a power density of 184 mW cm-2 and a specific capacity of 801 mAh g-1; thus, it exhibits great competitive advantages over those of the Zn-air devices employing a Pt-based cathode electrocatalyst.

Key words: Oxygen reduction reaction, Electrocatalyst, Fe-N-C activity sites, Alkaline/neutral medium, Zn-air battery