Lithium‐Ion Batteries: Layered Heterostructure Ionogel Electrolytes for High‐Performance Solid‐State Lithium‐Ion Batteries (Adv. Mater. 13/2021)

Ionogel electrolytes with a layered heterostructure are developed by Mark C. Hersam and co-workers in article number 2007864, using hexagonal boron nitride nanoplatelets and two imidazolium ionic liquids with different electrochemical stability windows. Compared with ionogels using the individual ionic liquids, the layered heterostructure ionogels provide broadened electrochemical stability windows while maintaining desirable ionic conductivity, suggesting a promising electrolyte strategy for high operating voltages and rate performance in solid-state lithium-ion batteries.