稀有金属(英文版)2024,Vol.43Issue(8) :3735-3747.DOI:10.1007/s12598-023-02561-0

Restraining growth of Zn dendrites by poly dimethyl diallyl ammonium cations in aqueous electrolytes

Xiang-Xin Zhang Yuan-Qiang Chen Chang-Xin Lin Yuan-Sheng Lin Guo-Lin Hu Yong-Chuan Liu Xi-Lai Xue Su-Jing Chen Zhan-Lin Yang Bai-Sheng Sa Yi-Ning Zhang
稀有金属(英文版)2024,Vol.43Issue(8) :3735-3747.DOI:10.1007/s12598-023-02561-0

Restraining growth of Zn dendrites by poly dimethyl diallyl ammonium cations in aqueous electrolytes

Xiang-Xin Zhang 1Yuan-Qiang Chen 1Chang-Xin Lin 1Yuan-Sheng Lin 1Guo-Lin Hu 1Yong-Chuan Liu 1Xi-Lai Xue 2Su-Jing Chen 1Zhan-Lin Yang 3Bai-Sheng Sa 3Yi-Ning Zhang1
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作者信息

  • 1. Key Laboratory of Optoelectronic Materials Chemistry and Physics,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,China
  • 2. Helmholtz Institute Ulm(HIU),89081 Ulm,Germany;Karlsruhe Institute of Technology(KIT),76021 Karlsruhe,Germany
  • 3. College of Materials Science and Engineering,Fuzhou University,Fuzhou 350108,China
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Abstract

Metallic zinc is an excellent anode material for Zn-ion batteries,but the growth of Zn dendrite severely hinders its practical application.Herein,an efficient and economical cationic additive,poly dimethyl diallyl ammonium(PDDA)was reported,used in aqueous Zn-ion batteries electrolyte for stabilizing Zn anode.The growth of zinc dendrites can be significantly restrained by bene-fiting from the pronounced electrostatic shielding effect from PDDA on the Zn metal surface.Moreover,the PDDA is preferentially absorbed on Zn(002)plane,thus pre-venting unwanted side reactions on Zn anode.Owing to the introduction of a certain amount of PDDA additive into the common ZnSO4-based electrolyte,the cycle life of assembled Zn||Zn cells(1 mA·cmr-2 and 1 mAh·cm-2)is prolonged to more than 1100 h.In response to the perfo-ration issue of Zn electrodes caused by PDDA additives,the problem can be solved by combining foamy copper with zinc foil.For real application,Zn-ion hybrid super-capacitors and MnO2||Zn cells were assembled,which exhibited excellent cycling stability with PDDA additives.This work provides a new solution and perspective to cope with the dendrite growth problem of Zn anode.

Key words

PDDA/Electrostatic shielding effect/Zn anode/Zn dendrites

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基金项目

Fuzhou science and technology project(2021-ZD-213)

Fuzhou science and technology project(2020-Z-6)

Fujian Provincial Department of Science and Technology(2021T3036)

Fujian Provincial Department of Science and Technology(2020T3004)

Fujian Provincial Department of Science and Technology(2020T3030)

Fujian Provincial Department of Science and Technology(2020H0040)

STS Science And Technology Project of the Chinese Academy of Sciences(KFJ-STS-QYZD-2021-09-001)

Quanzhou Science and Technology Project(2020G17)

Joint Fund of the Yulin University and the Dalian National Laboratory for Clean Energy(2021009)

出版年

2024
稀有金属(英文版)
中国有色金属学会

稀有金属(英文版)

CSTPCDEI
影响因子:0.801
ISSN:1001-0521
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