Energy Storage Science and Technology ›› 2017, Vol. 6 ›› Issue (5): 941-951.doi: 10.12028/j.issn.2095-4239.2017.0087

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Research progress on solid-state lithium metal batteries

DUAN Hui1,2, YIN Yaxia1,2, GUO Yuguo1,2, WAN Lijun1,2   

  1. 1CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190, China; 2University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2017-06-01 Revised:2017-07-07 Online:2017-09-01 Published:2017-09-01
  • About author:段惠(1989—),女,博士研究生,研究方向为锂电池固态电解质,E-mail:duanhui14@iccas.ac.cn

Abstract: Li metal is a promising anode material due to the high capacity and the low negative electrochemical potential. The uncontrolled dendrite growth during lithium plating/stripping can induce internal short circuit and thermal runaway with potential safety hazards, which cannot meet the increasing demand for safe, high-energy lithium-ion batteries. Solid-state lithium-metal batteries (SLMBs) that use solid electrolytes (SEs) instead of liquid ones could offer high energy density, long cycle life and high safety. However, ionic conductivity, mechanical strength, electrochemical windows, electrode/electrolyte interface of SEs and favorable lithium ionic and electronic conduction pathways in electrode restrict the development of SLMBs. Multilayered electrolyte will combine the speciality of each electrolyte to acquire ideal solid-state lithium metal battery.

Key words: solid-state lithium metal battery, solid electrolyte, interface, ionic conductivity, multilayered electrolyte