A review on the electrochemical reaction of Li-rich layered oxide materials

Lithium-rich layered oxide materials xLi(2)MnO(3)center dot(1 - x)LiMO2 (M = Mn, Co, Ni, Fe, Cr, etc.) are promising cathode candidates for high energy Li-ion batteries because of their high specific capacities (>250 mA h g(-1)) and reasonable working voltage. The high capacity comes from the activation of inactive Li2MnO3 in the high voltage range (>4.5 V). However, many adverse factors appear along with the activation process, such as low initial coulombic efficiency and severe capacity and voltage fading during cycling, which limit the commercialization of Li-rich materials. This review based on existing research on the electrochemistry of Li-rich materials presents an introduction to the reaction mechanism, challenges and strategies and prospects.

Automated summary

Lithium-rich layered oxide materials show promise as cathode candidates for high energy Li-ion batteries due to their high specific capacities and reasonable working voltage. However, challenges such as low initial coulombic efficiency and severe capacity and voltage fading limit their commercialization. This review provides an overview of the reaction mechanism, challenges, strategies, and prospects for Li-rich materials based on existing research on their electrochemistry.