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Nano Research 2020, 13(2): 430-436 https://doi.org/10.1007/s12274-020-2625-z
Research Article | Issue | Published: 17 January 2020

In situ fluorinated solid electrolyte interphase towards long-life lithium metal anodes

Show Author's Information Shan-Min Xu1,2,§,  Hui Duan2,3,§,  Ji-Lei Shi2,3,  Tong-Tong Zuo2,3,  Xin-Cheng Hu2,3,  Shuang-Yan Lang2,3,  Min Yan2,  Jia-Yan Liang2,3,  Yu-Guo Yang1,  Qing-Hua Kong1( ),  Xing Zhang2,3( ),  Yu-Guo Guo2,3( )
School of Science, Beijing Jiaotong University, Beijing 100044, China
CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, CAS Research/Education Center for Excellence in Molecular Sciences and Beijing National Laboratory for Molecular Sciences (BNLMs), Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, China
University of Chinese Academy of Sciences, Beijing 100049, China

§ Shan-Min Xu and Hui Duan contributed equally to this work.

Keywords:
solid electrolyte interphase, in situ, lithium metal batteries, artificial, LiF
Topics:
AnodesLithiumLithium batteriesLithium compoundsState Batteries
Cite this article:
Xu S-M, Duan H, Shi J-L, et al. In situ fluorinated solid electrolyte interphase towards long-life lithium metal anodes. Nano Research, 2020, 13(2): 430-436. https://doi.org/10.1007/s12274-020-2625-z
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Abstract Full text Electronic supplementary material About this article

The urgent demands for high-energy-density rechargeable batteries promote a flourishing development of Li metal anode. However, the uncontrollable dendrites growth and serious side reactions severely limit its commercial application. Herein, an artificial LiF-rich solid electrolyte interphase (SEI) is constructed at molecular-level using one-step photopolymerization of hexafluorobutyl acrylate based solution, where the LiF is in situ generated during photopolymerization process (denoted as PHALF). The LiF-rich layer comprised flexible polymer matrix and inorganic LiF filler not only ensures intimate contact with Li anode and adapts volume fluctuations during cycling but also regulates Li deposition behavior, enabling it to suppress the dendrite growth and block side reactions between the electrolyte and Li metal. Accordingly, the PHALF-Li anode presents superior stable cycling performance over 500 h at 1 mA·cm-2 for 1 mA·h·cm-2 without dendrites growth in carbonate electrolyte. The work provides a novel approach to design and build in situ artificial SEI layer for high-safety and stable Li metal anodes.


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Abstract
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Electronic supplementary material
About this article

In situ fluorinated solid electrolyte interphase towards long-life lithium metal anodes

Show Author's information Shan-Min Xu1,2,§, Hui Duan2,3,§, Ji-Lei Shi2,3, Tong-Tong Zuo2,3, Xin-Cheng Hu2,3, Shuang-Yan Lang2,3, Min Yan2, Jia-Yan Liang2,3, Yu-Guo Yang1, Qing-Hua Kong1( ), Xing Zhang2,3( ), Yu-Guo Guo2,3( )
School of Science, Beijing Jiaotong University, Beijing 100044, China
CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, CAS Research/Education Center for Excellence in Molecular Sciences and Beijing National Laboratory for Molecular Sciences (BNLMs), Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, China
University of Chinese Academy of Sciences, Beijing 100049, China

§ Shan-Min Xu and Hui Duan contributed equally to this work.

Abstract

The urgent demands for high-energy-density rechargeable batteries promote a flourishing development of Li metal anode. However, the uncontrollable dendrites growth and serious side reactions severely limit its commercial application. Herein, an artificial LiF-rich solid electrolyte interphase (SEI) is constructed at molecular-level using one-step photopolymerization of hexafluorobutyl acrylate based solution, where the LiF is in situ generated during photopolymerization process (denoted as PHALF). The LiF-rich layer comprised flexible polymer matrix and inorganic LiF filler not only ensures intimate contact with Li anode and adapts volume fluctuations during cycling but also regulates Li deposition behavior, enabling it to suppress the dendrite growth and block side reactions between the electrolyte and Li metal. Accordingly, the PHALF-Li anode presents superior stable cycling performance over 500 h at 1 mA·cm-2 for 1 mA·h·cm-2 without dendrites growth in carbonate electrolyte. The work provides a novel approach to design and build in situ artificial SEI layer for high-safety and stable Li metal anodes.

Keywords: solid electrolyte interphase, in situ, lithium metal batteries, artificial, LiF

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Publication history
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Acknowledgements

Publication history

Received: 30 September 2019
Revised: 03 December 2019
Accepted: 26 December 2019
Published: 17 January 2020
Issue date: February 2020

Copyright

© Tsinghua University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2020

Acknowledgements

This work was supported by the Basic Science Center Project of National Natural Science Foundation of China (No. 51788104), the National Natural Science Foundation of China (Nos. 21773264, 21805062, 21703257, 21603011), the National Key R&D Program of China (Nos. 2016YFA0202500 and 2018YFB0104300), Beijing Natural Science Foundation (No. L172023) and the "Transformational Technologies for Clean Energy and Demonstration" , Strategic Priority Research Program of the Chinese Academy of Sciences (No. XDA 21070300), the Youth Innovation Promotion Association CAS (No. 2019033), the Fundamental Research Funds for the Central Universities (No. 2018JBM067). We thank Dr. Z. J. Z., Dr. X.Y. Z. and Dr. Y. S. at the Center for Analysis and Testing, ICCAS for their help for the XPS and XRD analysis.

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