Effects of Polymer Coatings on Electrodeposited Lithium Metal

Journal of the American Chemical Society
Jeffrey LopezZhenan Bao

Abstract

The electrodeposition of lithium metal is a key process in next-generation, high energy density storage devices. However, the high reactivity of the lithium metal causes short cycling lifetimes and dendrite growth that can pose a serious safety issue. Recently, a number of approaches have been pursued to stabilize the lithium metal-electrolyte interface, including soft polymeric coatings that have shown the ability to enable high-rate and high-capacity lithium metal cycling, but a clear understanding of how to design and modify these coatings has not yet been established. In this work, we studied the effects of several polymers with systematically varied chemical and mechanical properties as coatings on the lithium metal anode. By examining the early stages of lithium metal deposition, we determine that the morphology of the lithium particles is strongly influenced by the chemistry of the polymer coating. We have identified polymer dielectric constant and surface energy as two key descriptors of the lithium deposit size. Low surface energy polymers were found to promote larger deposits with smaller surface areas. This may be explained by a reduced interaction between the coating and the lithium surface and thus an increase in t...Continue Reading

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Citations

Nov 18, 2020·Proceedings of the National Academy of Sciences of the United States of America·Yue GaoDonghai Wang
Dec 30, 2020·Proceedings of the National Academy of Sciences of the United States of America·Prayag BiswalLynden A Archer
Feb 16, 2021·Journal of the American Chemical Society·Yingli WangJun Chen
Mar 25, 2021·ACS Applied Materials & Interfaces·Qing LanHui Zhan
Jun 9, 2021·ACS Applied Materials & Interfaces·Can CuiPengjian Zuo
Oct 28, 2020·ACS Applied Materials & Interfaces·Chi-Ta YangYue Qi
Jun 2, 2020·Nano Letters·Sanjuna StalinLynden A Archer
Dec 15, 2020·Journal of the American Chemical Society·Zhuojun HuangZhenan Bao
Nov 30, 2018·Journal of the American Chemical Society·Hongliu DaiShanqing Zhang
Nov 24, 2020·Journal of the American Chemical Society·Anna B GunnarsdóttirClare P Grey
Jun 26, 2020·ACS Applied Materials & Interfaces·Jian ZhangJuchen Guo
Nov 12, 2020·Chemical Reviews·Ji-Guang ZhangJun Liu
Sep 29, 2021·Angewandte Chemie·Rui-Min GaoZai-Ping Guo
Dec 2, 2021·Chemical Reviews·Austin M EvansWilliam R Dichtel
Nov 10, 2021·Advanced Materials·Yizhou WangHusam N Alshareef
Dec 8, 2021·Nanotechnology·Hongyao Zhou, Ping Liu
Dec 29, 2021·ACS Applied Materials & Interfaces·Xiaowei LiChristopher Y Li

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