Nitrogen-Doped Cobalt Pyrite Yolk–Shell Hollow Spheres for Long-Life Rechargeable Zn–Air Batteries

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

  • Xue Feng Lu
  • Song Lin Zhang
  • Enbo Shangguan
  • Peng Zhang
  • Shuyan Gao

Detail(s)

Original languageEnglish
Article number2001178
Journal / PublicationAdvanced Science
Volume7
Issue number22
Online published13 Oct 2020
Publication statusPublished - 18 Nov 2020
Externally publishedYes

Link(s)

Abstract

Limited by the sluggish four-electron transfer process, designing high-performance nonprecious electrocatalysts for the oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) is urgently desired for efficient rechargeable Zn–air batteries (ZABs). Herein, the successful synthesis of porous nitrogen-doped cobalt pyrite yolk–shell nanospheres (N-CoS2 YSSs) is reported. Benefiting from the abundant porosity of the porous yolk–shell structure and unique electronic properties by nitrogen doping, the as-prepared N-CoS2 YSSs possess more exposed active surface, thus giving rise to superior activity for reversible oxygen electrocatalysis and outstanding cycling stability (more than 165 h at 10 mA cm−2) in ZABs, exceeding the commercial Pt/C and RuO2 hybrid catalysts. Moreover, the assembled ZABs, delivering a specific capacity of 640 mAh gZn−1, can be used for practical devices. This work provides a novel tactic to engineer sulfides as high efficiency and promising bifunctional oxygen electrocatalysts for advanced metal–air batteries. © 2020 The Authors. Published by WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Research Area(s)

  • cobalt pyrite, nitrogen doping, oxygen electrocatalysis, yolk–shell materials, Zn–air batteries

Citation Format(s)

Nitrogen-Doped Cobalt Pyrite Yolk–Shell Hollow Spheres for Long-Life Rechargeable Zn–Air Batteries. / Lu, Xue Feng; Zhang, Song Lin; Shangguan, Enbo et al.
In: Advanced Science, Vol. 7, No. 22, 2001178, 18.11.2020.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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