Ionic Liquid-Induced Solvation Structure Reconfiguration and Li + Chains in Water-in-Salt Electrolytes
A. J. Wang·JianJi WANG·Mengmin Jia·Jikuan Qiu·Zijun Li·Hao Wang·Yang Zhao·Nobuyuki Matubayasi·Yuling Zhao
Water-in-salt electrolytes (WiSEs) hold broad prospects in the field of electrochemical energy storage due to their advantages such as high safety and wide electrochemical windows. Recently, it was reported that the addition of ionic liquids (ILs) into WiSE can effectively improve the solubility of lithium salts and electrochemical stability. However, the related mechanism and microstructure remain unclear. In this work, four kinds of ILs with the same cation but different anions ([Bmim][TFSI],