P2-type layered structure Na1.0Li0.2Mn0.7Ti0.1O2 as a superb electrochemical performance cathode material for sodium-ion batteries

P2-type layered structure manganese-based materials have been reported as the most promising candidates for practical applications of sodium ion batteries because of their high capacity, facile fabrication, low cost, and environmental friendliness. In this work, a new P2-type layered structure Na1.0Li0.2Mn0.7Ti0.1O2 material was successfully synthesized by a conventional solid-state reaction method. The material delivered a superior specific capacity of 163 mAh g1 at 0.1C within the potential range from 1.5 to 4 V. The capacity and the coulombic efficiency of the material remained of 90% and 97% after 50 cycles of charge/discharge at a rate of 0.1C. The material also exhibited an excellent rate capability, with a discharge capacity of over 100 mAh.g−1 remained at a rate of 1.0C. The observed results suggested that Na1.0Li0.2Mn0.7Ti0.1O2 is a promising cathode material for sodium ion batteries. © 2020 Elsevier B.V.