Fe 7 S 8 nanoparticles encapsulated in porous N, S co-doped carbon as an efficient bifunctional electrocatalyst for Zn-air battery

Micro & nano letters

article

Tongzhou Jiang¹  Peng Dai¹  Wen Zhang¹ 

[1] School of Physics and Materials Science, Anhui University

关键词: nanofabrication;    nanoparticles;    electrochemistry;    carbon;    secondary cells;    doping;    reduction (chemical);    platinum;    electrochemical electrodes;    nitrogen;    sulphur;    electrocatalysis;    electrocatalysts;    iron compounds;    nanoporous materials;    zinc-air battery;    highly active bifunctional electrocatalysts;    oxygen evolution reaction;    nitrogen-sulfur co-doped porous carbon network;    efficient bifunctional catalyst;    oxygen electrocatalytic activity;    superior ORR activity;    comparable OER capability;    high cycling stability;    cathode catalyst;    iron sulfide nanoparticles;    time 65.0 hour;    Fe7S8-CN;    S;    Zn;   

DOI  :  10.1049/mnl.2019.0763

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

The development of low-cost and highly active bifunctional electrocatalysts for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) is of great significance to promote the practical application of Zn-air battery (ZAB). Herein, the authors report a facile strategy for the fabrication of Fe 7 S 8 nanoparticles embedded in the N, S co-doped porous carbon (NSC) network that served as an efficient bifunctional catalyst. The obtained Fe 7 S 8 /NSC shows remarkable oxygen electrocatalytic activity, in terms of superior ORR activity to commercial Pt/C as well as comparable OER capability to RuO 2 . Besides, when evaluated as the cathode catalyst for a homemade ZAB, Fe 7 S 8 /NSC also displays a superior peak power density of 135 mA cm −2 and high cycling stability over 65 h (195 cycles).

【 授权许可】

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