Lithium Metal Batteries: Synergistic Effects on Lithium Metal Batteries by Preferential Ionic Interactions in Concentrated Bisalt Electrolytes (Adv. Energy Mater. 11/2021)

In article number 2003520, Kyungwon Kwak, Kyung-Koo Lee and co-workers design a concentrated bisalt electrolyte for lithium metal batteries. The combination of two different salts (LiDFP and LiTFSI) with vastly different ionic interactions induces preferential interactions between Li+ and anions. The presence of the resulting solvation structures not only provides excellent electrochemical performance, but also alleviates issues regarding low ionic conductivity and high viscosity in concentrated non-aqueous electrolytes.