Novel Mn-based Li-rich layered oxide 0.3Li2MnO3·0.7LiNi1/3Co1/3Mn1/3O2 as anode material for lithium-ion batteries

The possibility of Mn-based Li-rich layered oxides 0.3Li2MnO3·0.7LiNi1/3Co1/3Mn1/3O2 as anode material for Li-ion batteries is explored. Ex-situ XRD patterns show that the layered structure remained when discharged to 1.2 V and the phase of Li2O and transition metal (Ni, Mn and Co) emerged when discharged to 0.05 V, indicating that there exists conversion reaction mechanism like transition-metal oxides anode material. The reversible capacities reach 574.2 and 449.8 mAh g−1 at the current density of 50 mA g−1 and 200 mA g−1 respectively after 80 cycles. This study suggests that further optimizing Mn-based Li-rich layered oxides is a promising alternative anode material for Li-ion batteries.