Excellent rate capabilities of (LiFePO4/C)//LiV3O8 in an optimized aqueous solution electrolyte

► The optimized aqueous electrolyte (OAE) is 9 M LiNO3 solution without oxygen. ► LiV3O8//(LiFePO4/C) presents good cycling performance in the OAE. ► This ARLB has large capacity at higher C-rate such as 30C and 50C.