Electrochemical performance of symmetric supercapacitor based on Li4Mn5O12 electrode in Li2SO4 electrolyte

▶ Spinel Li4Mn5O12 material is prepared by combustion method at low temperature. ▶ Li4Mn5O12 exhibits excellent performance in the potential range of 0-1.4 V. ▶ Capacitor based on Li4Mn5O12 has high specific capacitance of 69 F g−1. ▶ Capacitor based on Li4Mn5O12 delivers high energy density.