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

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外文摘要：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.

外文关键词：

PDDAElectrostatic shielding effectZn anodeZn dendrites

作者：

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

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作者单位：

Key Laboratory of Optoelectronic Materials Chemistry and Physics,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,China

Helmholtz Institute Ulm(HIU),89081 Ulm,Germany

Karlsruhe Institute of Technology(KIT),76021 Karlsruhe,Germany

College of Materials Science and Engineering,Fuzhou University,Fuzhou 350108,China

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基金：

Fuzhou science and technology projectFuzhou science and technology projectFujian Provincial Department of Science and TechnologyFujian Provincial Department of Science and TechnologyFujian Provincial Department of Science and TechnologyFujian Provincial Department of Science and TechnologySTS Science And Technology Project of the Chinese Academy of SciencesQuanzhou Science and Technology ProjectJoint Fund of the Yulin University and the Dalian National Laboratory for Clean Energy

项目编号：

2021-ZD-2132020-Z-62021T30362020T30042020T30302020H0040KFJ-STS-QYZD-2021-09-0012020G172021009

出版年：

2024

DOI：

10.1007/s12598-023-02561-0

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

年,卷(期)：2024.43(8)