(EMIm)+(PF6)− Ionic Liquid Unlocks Optimum Energy/Power Density for Architecture of Nanocarbon-Based Dual-Ion Battery.

A delicate configuration of dual‐ion battery is proposed to achieve optimum energy/power density. High potential intercalation reaction of positive electrode contributes to high energy density and quick absorption/desorption of negative is beneficial for power density. Such novel designed electrochemical energy storage device enables access to optimum power/energy density. [ABSTRACT FROM AUTHOR]