High-Performance Quasi-Solid-State MXene-Based Li–I Batteries

Lithium–iodine (Li–I) batteries have attracted tremendous attention due to their high energy and power densities as well as the low cost of iodine. However, the severe shuttle effect of iodine species and the uncontrollable lithium dendrite growth have strongly hindered their practical applications. Here we successfully develop a quasi-solid-state Li–I battery enabled by a MXene-based iodine cathode and a composite polymer electrolyte (CPE)...