High-capacity rechargeable batteries based on deeply cyclable lithium metal anodes

Proceedings of the National Academy of Sciences of the United States of America
Qiuwei ShiHailiang Wang

Abstract

Discovering new chemistry and materials to enable rechargeable batteries with higher capacity and energy density is of paramount importance. While Li metal is the ultimate choice of a battery anode, its low efficiency is still yet to be overcome. Many strategies have been developed to improve the reversibility and cycle life of Li metal electrodes. However, almost all of the results are limited to shallow cycling conditions (e.g., 1 mAh cm-2) and thus inefficient utilization (<1%). Here we achieve Li metal electrodes that can be deeply cycled at high capacities of 10 and 20 mAh cm-2 with average Coulombic efficiency >98% in a commercial LiPF6/carbonate electrolyte. The high performance is enabled by slow release of LiNO3 into the electrolyte and its subsequent decomposition to form a Li3N and lithium oxynitrides (LiN x Oy)-containing protective layer which renders reversible, dendrite-free, and highly dense Li metal deposition. Using the developed Li metal electrodes, we construct a Li-MoS3 full cell with the anode and cathode materials in a close-to-stoichiometric amount ratio. In terms of both capacity and energy, normalized to either the electrode area or the total mass of the electrode materials, our cell significantly ou...Continue Reading

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Citations

Jul 30, 2020·Chemical Communications : Chem Comm·Zhipeng JiangJia Xie
Aug 26, 2020·Angewandte Chemie·Jiale FuChunsheng Wang
Sep 5, 2019·Frontiers in Chemistry·Jinlei GuKeyu Xie
Jun 28, 2018·Angewandte Chemie·Quan PangLinda F Nazar
Feb 3, 2019·The Journal of Chemical Physics·Daniel GaissmaierTimo Jacob
Oct 7, 2020·Proceedings of the National Academy of Sciences of the United States of America·Qing ZhaoLynden Archer
Oct 6, 2020·Angewandte Chemie·Wenli ZhangHusam N Alshareef
Jan 5, 2021·Chemical Communications : Chem Comm·Shulan MaoYingying Lu
Apr 10, 2021·ACS Applied Materials & Interfaces·Jinyi QuCunzhong Zhang
Jun 4, 2021·Nano Letters·Jinqiu ZhouChenglin Yan
Jan 1, 2021·ACS Applied Materials & Interfaces·Yikang YuJian Xie
Aug 24, 2018·ACS Applied Materials & Interfaces·Xiaowei ShenChenglin Yan
Aug 20, 2021·Journal of the American Chemical Society·Yiren ZhongHailiang Wang
Sep 5, 2020·Accounts of Chemical Research·Xiang Chen, Qiang Zhang
Nov 2, 2019·ACS Applied Materials & Interfaces·Pengcheng ZhangShiyou Zheng
Jun 13, 2020·ACS Applied Materials & Interfaces·Zhenggang ZhangDeyu Wang
Sep 3, 2021·ACS Applied Materials & Interfaces·Eunseong ChoiKyoungmin Min
Jul 2, 2021·Advanced Science·Qingyu WangWenbin Hu

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