Research progress on lithium-rich manganese-based lithium-ion batteries cathodes

Abstract

lithium-rich manganese base cathode material (xLi2MnO3-(1-x)LiMO2, M = Ni, Co, Mn, etc.) is regarded as one of the finest possibilities for future lithium-ion battery cathode materials due to its high specific capacity, low cost, and environmental friendliness. The cathode material encounters rapid voltage decline, poor rate and during the electrochemical cycling. A series of problems that hinder the commercial application of lithium-rich manganese base cathode material in energy storage area. In view of this, the structural characteristics and discharge performance of lithium-rich manganese base cathode material are discussed in this manuscript as well as the mechanisms governing ion doping, surface coating, morphology, and component design. The reasons behind the performance differences between various doping ions and coating materials acting on Li-rich layered materials are also examined in detail, along with the benefits of double doping and double coating. In order to solve the shortcomings of single ion doping, surface coating, and morphology and component design in the modification of lithium-rich layered materials, a combined modification process based on the aforementioned three alterations is lastly proposed and briefly explained.