A new rechargeable lithium-ion battery with a xLi2MnO3·(1 − x) LiMn0.4Ni0.4Co0.2O2 cathode and a hard carbon anode

We reported a new type of rechargeable lithium-ion battery consisting of a structurally integrated 0.4Li2MnO3·0.6LiMnNi0.4Co0.2O2 cathode and a hard carbon anode. The drawback of the high irreversible capacity loss of both electrodes, occurring at the first charge/discharge process, can be counterbalanced each other. The battery shows good reversibility with a sloping voltage from 1.5 V to 4.5 V and delivers a capacity of 105 mA h g−1 and a specific energy of 315 W h kg−1 based on the total weight of the both active electrode materials.

► A new type of battery with 0.4Li2MnO3 0.6LiMn0.4Ni0.4Co0.2O2 and hard carbon was proposed.
► The irreversible capacity encountered at both electrodes, can be counterbalanced each other.
► The battery delivers capacities of 105 mAh g-1 and specific energies of 315 Wh kg–1.