J. Mater. Sci. Technol. ›› 2021, Vol. 70: 168-175.DOI: 10.1016/j.jmst.2020.08.035

• Research Article • Previous Articles     Next Articles

Stabilizing Na3SbS4/Na interface by rational design via Cl doping and aqueous processing

Haonan Caoa, Meiqi Yub,*(), Long Zhanga,*(), Zhaoxing Zhanga, Xinlin Yanc, Peng Lia, Chuang Yud   

  1. aClean Nano Energy Center, State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, Hebei, 066004, China
    bSchool of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao, Hebei, 066004, China
    cInstitute of Solid State Physics, Vienna University of Technology, Wiedner Hauptstr. 8-10, 1040, Vienna, Austria
    dDepartment of Mechanical and Materials Engineering, University of Western Ontario, 1151 Richmond St, London, Ontario, N6A 3K7, Canada
  • Received:2020-07-08 Revised:2020-08-12 Accepted:2020-08-16 Published:2021-04-20 Online:2021-04-30
  • Contact: Meiqi Yu,Long Zhang
  • About author:*E-mail: meiqiyu@ysu.edu.cn (M. Yu),
    First author contact:

    1The authors make equal contribution.

Abstract:

Solution-synthesis method is attractive for solid electrolytes because it is a facile and scalable process to be used to permeate electrodes and to construct a thin electrolyte coating layer on active materials. In this work, we report Cl-doped Na3SbS4 prepared via aqueous-solution approach. Besides decent ionic conductivity, the aqueous-solution approached electrolyte demonstrates an improved interfacial stability toward Na metal compared to the solid-state sintered one because of the residual hydrate, nanosized microstructure, and Cl incorporation. All-solid-state batteries using the solution-prepared electrolytes have enhanced cycling performance, though the performance still needs to be further improved.

Key words: Interfacial stability, Sulfides, Solid electrolytes, Chemical synthesis, All-solid-state sodium battery