中国物理B ›› 2020, Vol. 29 ›› Issue (8): 88201-088201.doi: 10.1088/1674-1056/ab9610

• SPECIAL TOPIC—Ultracold atom and its application in precision measurement • 上一篇    下一篇

Suppressing transition metal dissolution and deposition in lithium-ion batteries using oxide solid electrolyte coated polymer separator

Zhao Yan(闫昭), Hongyi Pan(潘弘毅), Junyang Wang(汪君洋), Rusong Chen(陈汝颂), Fei Luo(罗飞), Xiqian Yu(禹习谦), Hong Li(李泓)   

  1. 1 Beijing Advanced Innovation Center for Materials Genome Engineering, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
    2 School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China;
    3 Yangtze River Delta Physics Research Center Co., Ltd., Liyang 213300, China;
    4 Tianmulake Excellent Anode Materials Co., Ltd., Liyang 213300, China
  • 收稿日期:2020-04-21 修回日期:2020-05-08 出版日期:2020-08-05 发布日期:2020-08-05
  • 通讯作者: Xiqian Yu, Hong Li E-mail:hli@iphy.ac.cn;xyu@iphy.ac.cn
  • 基金资助:

    Project supported by the National Key R&D Program of China (Grant No. 2016YFB0100100) and the National Natural Science Foundation of China (Grant Nos. 51822211, U1932220, U1964205, and U19A2018).

Suppressing transition metal dissolution and deposition in lithium-ion batteries using oxide solid electrolyte coated polymer separator

Zhao Yan(闫昭)1,2, Hongyi Pan(潘弘毅)1,2, Junyang Wang(汪君洋)1,2, Rusong Chen(陈汝颂)1,2, Fei Luo(罗飞)4, Xiqian Yu(禹习谦)1,2,3, Hong Li(李泓)1,2,3   

  1. 1 Beijing Advanced Innovation Center for Materials Genome Engineering, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
    2 School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China;
    3 Yangtze River Delta Physics Research Center Co., Ltd., Liyang 213300, China;
    4 Tianmulake Excellent Anode Materials Co., Ltd., Liyang 213300, China
  • Received:2020-04-21 Revised:2020-05-08 Online:2020-08-05 Published:2020-08-05
  • Contact: Xiqian Yu, Hong Li E-mail:hli@iphy.ac.cn;xyu@iphy.ac.cn
  • Supported by:

    Project supported by the National Key R&D Program of China (Grant No. 2016YFB0100100) and the National Natural Science Foundation of China (Grant Nos. 51822211, U1932220, U1964205, and U19A2018).

摘要:

The dissolution of transition metal (TM) cations from oxide cathodes and the subsequent migration and deposition on the anode lead to the deconstruction of cathode materials and uncontrollable growth of solid electrode interphase (SEI). The above issues have been considered as main causes for the performance degradation of lithium-ion batteries (LIBs). In this work, we reported that the solid oxide electrolyte Li1.5Al0.5Ti1.5(PO4)3 (LATP) coating on polyethylene (PE) polymer separator can largely block the TM dissolution and deposition in LIBs. Scanning electron microscopy (SEM), second ion mass spectroscopy (SIMS), and Raman spectroscopy characterizations reveal that the granular surface of the LATP coating layer is converted to a dense morphology due to the reduction of LATP at discharge process. The as-formed dense surface layer can effectively hinder the TM deposition on the anode electrode and inhibit the TM dissolution from the cathode electrode. As a result, both the LiCoO2/SiO-graphite and LiMn2O4/SiO-graphite cells using LATP coated PE separator show substantially enhanced cycle performances compared with those cells with Al2O3 coated PE separator.

关键词: transition metal dissolution, cathode, lithium-ion batteries, solid electrolyte, separator

Abstract:

The dissolution of transition metal (TM) cations from oxide cathodes and the subsequent migration and deposition on the anode lead to the deconstruction of cathode materials and uncontrollable growth of solid electrode interphase (SEI). The above issues have been considered as main causes for the performance degradation of lithium-ion batteries (LIBs). In this work, we reported that the solid oxide electrolyte Li1.5Al0.5Ti1.5(PO4)3 (LATP) coating on polyethylene (PE) polymer separator can largely block the TM dissolution and deposition in LIBs. Scanning electron microscopy (SEM), second ion mass spectroscopy (SIMS), and Raman spectroscopy characterizations reveal that the granular surface of the LATP coating layer is converted to a dense morphology due to the reduction of LATP at discharge process. The as-formed dense surface layer can effectively hinder the TM deposition on the anode electrode and inhibit the TM dissolution from the cathode electrode. As a result, both the LiCoO2/SiO-graphite and LiMn2O4/SiO-graphite cells using LATP coated PE separator show substantially enhanced cycle performances compared with those cells with Al2O3 coated PE separator.

Key words: transition metal dissolution, cathode, lithium-ion batteries, solid electrolyte, separator

中图分类号:  (Lithium-ion batteries)

  • 82.47.Aa
62.23.Pq (Composites (nanosystems embedded in a larger structure)) 65.40.gk (Electrochemical properties)