Chinese Journal of Applied Chemistry ›› 2022, Vol. 39 ›› Issue (4): 585-598.DOI: 10.19894/j.issn.1000-0518.210448

• Review • Previous Articles     Next Articles

Research Progress of Rare Earth Bromides Based Solid Electrolytes for All⁃Solid⁃State Batteries

Qi ZHANG1, Qian ZHANG1(), Xiao-Meng SHI2, Ya-Qi KONG1, Ke-Xin GAO1, Ya-Ping DU2()   

  1. 1.State Key Laboratory of Eco-Hydraulics in Northwest Arid Region,Department of Applied Chemistry,Xi'an University of Technology,Xi'an 710048,China
    2.Tianjin Key Lab for Rare Earth Materials and Applications,Center for Rare Earth and Inorganic Functional Materials,School of Materials Science and Engineering & National Institute for Advanced Materials,Nankai University,Tianjin 300350,China
  • Received:2021-09-01 Accepted:2021-11-22 Published:2022-04-01 Online:2022-04-19
  • Contact: Qian ZHANG,Ya-Ping DU
  • Supported by:
    the “Water Saving and Reuse Innovation Team” Program of State Key Laboratory of Eco?Hydraulics in Northwest Arid Region(2019KJCXTD?8);from the National Natural Science Foundation of China(21971117);Functional Research Funds for the Central Universities, Nankai University(63186005);Tianjin Key Lab for Rare Earth Materials and Applications(ZB19500202);the Open Funds of the State Key Laboratory of Rare Earth Resource Utilization(RERU2019001);111 Project from China(B18030);Beijing?Tianjin?Hebei Collaborative Innovation Project(19YFSLQY00030);the Outstanding Youth Project of Tianjin Natural Science Foundation(20JCJQJC00130);the Key Project of Tianjin Natural Science Foundation(20JCZDJC00650)

Abstract:

All-solid-state lithium-ion batteries possess excellent safety performance and high energy density, and are expected to be the next generation energy storage devices to replace traditional liquid batteries. Solid-state electrolytes are definitely the key materials to achieve the real all-solid-state batteries. In recent years, considerable progress has been made in halide electrolytes, especially rare earth-containing bromide based solid electrolytes (RE-BSEs), which show good ionic conductivities (up to mS/cm order of magnitude), electrochemical stability (1.5~3.4 V vs.Li+/Li) and so on. In this article, we review the research advances focusing on the possible applications and technical bottlenecks of RE-BSEs. Hopefully, it may be enlightening and spark some inspirations in terms of synthetic strategies, lithium ion transportation mechanism, and investigating methodologies in the study of RE-BSEs. Rare earth is one of the most important strategic resources of China and even for the world. The research and important achievements made on RE-BSEs show the high value potentials of rare earth elements, especially in fields of solid ionics and energy saving and conversions. It is of great significance for structural adjustment of energy economics, and will contribute to the emission peak and carbon neutrality.

Key words: Rare earth, Bromide, Solid electrolyte, All solid state battery

CLC Number: