Open AccessFe 7 S 8 nanoparticles encapsulated in porous N, S co‐doped carbon as an efficient bifunctional electrocatalyst for Zn‐air battery
Author(s) -
Jiang Tongzhou,
Dai Peng,
Zhang Wen
Publication year - 2020
Publication title -
micro and nano letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.25
H-Index - 31
ISSN - 1750-0443
DOI - 10.1049/mnl.2019.0763
Subject(s) - electrocatalyst , bifunctional , materials science , battery (electricity) , nanoparticle , doping , carbon fibers , chemical engineering , porosity , inorganic chemistry , catalysis , nanotechnology , electrode , electrochemistry , chemistry , composite material , composite number , organic chemistry , optoelectronics , power (physics) , physics , quantum mechanics , engineering
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).