Engineering Two-Phase Bifunctional Oxygen Electrocatalysts with Tunable and Synergetic Components for Flexible Zn–Air Batteries

被引：0
作者：
Yanli Niu
Xue Teng
Shuaiqi Gong
Mingze Xu
Shi-Gang Sun
Zuofeng Chen
机构：
[1] Tongji University,Shanghai Key Laboratory of Chemical Assessment and Sustainability, School of Chemical Science and Engineering
[2] Xiamen University,State Key Lab of Physical Chemistry of Solid Surface, College of Chemistry and Chemical Engineering
来源：
Nano-Micro Letters | 2021年 / 13卷
关键词：
Bifunctional electrocatalysts; Oxygen electrocatalysis; Zn–air battery; Co/CoFe heterointerface engineering; Density functional theory calculations;
D O I：
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摘要：
A novel heterostructured bimetallic Co/CoFe nanomaterial supported on nanoflower-like N-doped graphitic carbon (NC) is prepared through a strategy of coordination construction-cation exchange-pyrolysis.The Co/CoFe@NC exhibits high bifunctional activities with a remarkably small potential gap of 0.70 V between oxygen evolution reaction (OER) and oxygen reduction reaction (ORR), which can be used in liquid and flexible quasi-solid-state rechargeable Zn–air batteries.The density functional theory calculations reveal optimized adsorption energies for intermediates of ORR and OER on heterostructured Co/CoFe@NC.
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