In-Plane Lithium Growth Enabled by Artificial Nitrate-Rich Layer: Fast Deposition Kinetics and Desolvation/Adsorption Mechanism

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Xianshu WangWeishan Li

Abstract

An artificial lithium-nitrate (LiNO3 )-rich layer (LN-RL) is developed to address dendritic lithium (Li) growth by a fusing-infusing strategy, in which LiNO3 is loaded into stainless steel mesh and a Li-metal anode (LN-RL@Li) is obtained by casting this LN-RL onto Li foil. The LN-RL enables fast Li deposition kinetics in carbonates and endows LN-RL@Li with excellent cycleability. The underneath mechanism on the contribution of LN-RL is uncovered by detailed characterizations combining with theoretical simulations. The LN-RL promotes the desolvation and capacitive adsorption of Li ions and induces in-plane Li growth along the edges of preplated Li with planar morphology. The improved cycleability of LN-RL(@Li) is demonstrated by LiǁCu cell that presents a coulombic efficiency of 97.2% after 280 cycles and LiǁLi cell that proceeds over 1000 h at 0.5 mA cm-2 in carbonates. Additionally, the LiǁLiFePO4 cell shows a capacity retention of 58% after 400 cycles at 1 C (1 C = 170 mA g-1 ), compared to the 35% after 180 cycles for the control. This work presents not only a promising strategy for practical applications of Li-metal batteries, but also a new understanding on the role of nitrate in Li plating/stripping kinetics.

References

Jan 9, 2013·Journal of the American Chemical Society·John B Goodenough, Kyu-Sung Park
Feb 24, 2015·Nature Communications·Jiangfeng QianJi-Guang Zhang
Mar 8, 2017·Nature Nanotechnology·Dingchang LinYi Cui
Jul 29, 2017·Chemical Reviews·Xin-Bing ChengQiang Zhang
Nov 7, 2017·ACS Central Science·Arumugam Manthiram
Aug 29, 2018·Journal of the American Chemical Society·Jeffrey LopezZhenan Bao
Dec 1, 2018·Chemical Reviews·Martin WinterKang Xu

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Citations

Jul 30, 2020·Chemical Communications : Chem Comm·Zhipeng JiangJia Xie

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