A family of oxychloride amorphous solid electrolytes for long-cycling all-solid-state lithium batteries

Abstract Solid electrolyte is vital to ensure all-solid-state batteries with improved safety, long cyclability, and feasibility at different temperatures. Herein, we report a new family of amorphous solid electrolytes, xLi 2 O-MCl y (M = Ta or Hf, 0.8 ≤ x ≤ 2, y = 5 or 4). xLi 2 O-MCl y amorphous solid electrolytes can achieve desirable ionic conductivities up to 6.6 × 10 −3 S cm −1 at 25 °C, which is one of the highest values among all the reported amorphous solid electrolytes and comparable to those of the popular crystalline ones. The mixed-anion structural models of xLi 2 O-MCl y amorphous SEs are well established and correlated to the ionic conductivities. It is found that the oxygen-jointed anion…

• CL
  Canadian Light Source
• UO
  University of Saskatchewan
• OR
  Ontario Research Foundation
• WU
  Western University
• CI
  Canadian Institutes of Health Research
• NS
  Natural Sciences and Engineering Research Council of Canada