Electrochemical Stability and Performance of Li2OHCl Substituted by F or Br as Solid-State Electrolyte

Abstract

In the case of Li2(OH)0.9Br0.1Cl, it had the highest Li+ conductivity and good Li+ migration by both effects because of a larger interstitial site and low OH? concentration. Furthermore, the electrochemical stability of four materials was compared due to the different structural stabilities and strengths of binary chemical bonds such as Li?X, H?X, and O?X. Comparing the Li+ conductivity of Li2-(OH)0.9F0.1Cl and Li2OHCl0.8Br0.2, the Li+ conductivity is influenced by the OH? concentration unlike the other mechanisms.