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Title: Nitrogen-doped cobalt pyrite yolk-shell hollow spheres for long‐life rechargeable Zn-air batteries
Authors: Lu, Xue Feng
Zhang, Song Lin
Shangguan, Enbo
Zhang, Peng
Gao, Shuyan
Lou, David Xiong Wen
Keywords: Engineering::Chemical engineering
Issue Date: 2020
Source: Lu, X. F., Zhang, S. L., Shangguan, E., Zhang, P., Gao, S., & Lou, D. X. W. (2020). Nitrogen‐doped cobalt pyrite yolk-shell hollow spheres for long-life rechargeable Zn-air batteries. Advanced Science, 7(22), 2001178-. doi:10.1002/advs.202001178
Project: RG116/18
Journal: Advanced Science 
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.
ISSN: 2198-3844
DOI: 10.1002/advs.202001178
Rights: © 2020 The Authors. Published by WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SCBE Journal Articles

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