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Simultaneously Regulating Uniform -Zn2+ Flux and Electron Conduction by MOF/rGO Interlayers for High-Performance Zn Anodes

Ziqi Wang Liubing Dong Weiyuan Huang Hao Jia Qinghe Zhao Yidi Wang Bin Fei Feng Pan

纳微快报（英文）2021，Vol.13Issue(5)：34-44,11.

Simultaneously Regulating Uniform -Zn2+ Flux and Electron Conduction by MOF/rGO Interlayers for High-Performance Zn Anodes

Simultaneously Regulating Uniform -Zn2+ Flux and Electron Conduction by MOF/rGO Interlayers for High?Performance Zn Anodes

Ziqi Wang ¹Liubing Dong ¹Weiyuan Huang ²Hao Jia ³Qinghe Zhao ²Yidi Wang ³Bin Fei ³Feng Pan²

作者信息

1. Department of Materials Science and Engineering, College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, People's Republic of China
2. School of Advanced Materials, Peking University Shenzhen Graduate School, Shenzhen 518055, People's Republic of China
3. Nano Center, Institute of Textiles and Clothing, Hong Kong Polytechnic University, Hunghom, Kowloon, Hong Kong 999077, People's Republic of China
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摘要

Abstract

Owing to the merits of low cost, high safety and environ-mental benignity, rechargeable aqueous Zn-based batteries (ZBs) have gained tremendous attention in recent years. Nevertheless, the poor reversibility of Zn anodes that originates from dendrite growth, surface passivation and corrosion, severely hinders the further development of ZBs. To tackle these issues, here we report a Janus separator based on a Zn-ion conductive metal–organic framework (MOF) and reduced gra-phene oxide (rGO), which is able to regulate uniform -Zn2+ flux and electron conduction simultaneously during battery operation. Facilitated by the MOF/rGO bifunctional interlayers, the Zn anodes demonstrate stable plating/stripping behavior (over 500 h at 1 mA cm?2), high Cou-lombic efficiency (99.2％ at 2 mA cm?2 after 100 cycles) and reduced redox barrier. Moreover, it is also found that the Zn corrosion can be effectively retarded through diminishing the potential discrepancy on Zn surface. Such a separator engineering also saliently promotes the overall performance of Zn|MnO2 full cells, which deliver nearly 100％ capacity retention after 2000 cycles at 4 A -g?1 and high power density over 10 kW kg?1. This work provides a feasible route to the high-performance Zn anodes for ZBs.

关键词

Zn-based battery/Zn anode/Janus separator/Metal–organic framework/Reduced graphene oxide

Key words

Zn-based battery/Zn anode/Janus separator/Metal–organic framework/Reduced graphene oxide

引用本文复制引用

Ziqi Wang,Liubing Dong,Weiyuan Huang,Hao Jia,Qinghe Zhao,Yidi Wang,Bin Fei,Feng Pan..Simultaneously Regulating Uniform -Zn2+ Flux and Electron Conduction by MOF/rGO Interlayers for High-Performance Zn Anodes[J].纳微快报（英文）,2021,13(5):34-44,11.

基金项目

This work was financially supported by Hong Kong Innovation&Technology Fund(ITS/031/18),National Key R&D Program of China(2016YFB0700600),Soft Science Research Project of Guangdong Province(2017B030301013)and Shenzhen Science and Technology Research Grant(ZDSYS201707281026184). （ITS/031/18）

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OACSCDEISCI

ISSN：2311-6706

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