MnO2–graphene nanosheets wrapped mesoporous carbon/sulfur composite for lithium–Sulfur batteries

Abstract

MnO2–graphene nanosheets wrapped mesoporous carbon/sulfur (MGN@MC/S) composite is successfully synthesized derived from metal–organic frameworks and investigated as cathode for lithium-ion batteries. Used as cathode, MGN@MC/S composite possesses electronic conductivity network for redox electron transfer and strong chemical bonding to lithium polysulfides, which enables low capacity loss to be achieved. MGN@MC/S cathodes exhibit high reversible capacity of 1475mAh g−1 at 0.1C and an ultra-low capacity fading of 0.042% per cycle at 1C over 450 cycles.