Facile Generation of Polymer-Alloy Hybrid Layers for Dendrite-Free Lithium-Metal Anodes with Improved Moisture Stability

Zhipeng Jiang; Liu Jin; Zhilong Han; Wei Hu; Ziqi Zeng; Yulong Sun; Jia Xie

doi:10.1002/anie.201905712

Facile Generation of Polymer-Alloy Hybrid Layers for Dendrite-Free Lithium-Metal Anodes with Improved Moisture Stability

Angew Chem Int Ed Engl. 2019 Aug 12;58(33):11374-11378. doi: 10.1002/anie.201905712. Epub 2019 Jul 4.

Authors

Zhipeng Jiang^{1

2}, Liu Jin^{1

2}, Zhilong Han¹, Wei Hu¹, Ziqi Zeng¹, Yulong Sun¹, Jia Xie¹

Affiliations

¹ State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China.
² State Key Laboratory of Materials Processing and Die and Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China.

PMID: 31111996
DOI: 10.1002/anie.201905712

Abstract

Lithium-metal anodes are recognized as the most promising next-generation anodes for high-energy-storage batteries. However, lithium dendrites lead to irreversible capacity decay in lithium-metal batteries (LMBs). Besides, the strict assembly-environment conditions of LMBs are regarded as a challenge for practical applications. In this study, a workable lithium-metal anode with an artificial hybrid layer composed of a polymer and an alloy was designed and prepared by a simple chemical-modification strategy. Treated lithium anodes remained dendrite-free for over 1000 h in a Li-Li symmetric cell and exhibited outstanding cycle performance in high-areal-loading Li-S and Li-LiFePO₄ full cells. Moreover, the treated lithium showed improved moisture stability that benefits from the hydrophobicity of the polymer, thus retaining good electrochemical performance after exposure to humid air.

Keywords: air stability; dendrite-free anodes; hydrophobicity; lithium-metal batteries; polymers.

Abstract

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