A cost-effective Ca-doped Li2ZrCl6 halide solid electrolyte for all-solid-state lithium batteries

A cost-effective Ca²⁺-substituted Li₂ZrCl₆ solid electrolyte (SE) was fabricated by the mechanochemical method, exhibiting high Li⁺ conductivity, a wide electrochemical window and excellent compatibility with 4 V-class cathodes. The assembled all-solid-state battery with LiCoO₂ achieves a high cycling performance for 150 cycles at 1C with a high-capacity retention of 83.1%.