Demystifying the Lattice Oxygen Redox in Layered Oxide Cathode Materials of Lithium-Ion Batteries.

TLDR: In this paper, the intrinsic science that induces the lattice oxygen redox (LOR) activity and crystal structure evolution are extensively discussed Moreover, a variety of characterization techniques for investigating these behaviors are presented Furthermore, the practical restrictions and outlined the probable approaches of Li-based layered oxide cathodes for improving such materials to meet the practical applications.

Abstract: The practical application of lithium-ion batteries suffers from low energy density and the struggle to satisfy the ever-growing requirements of the energy-storage Internet Therefore, developing next-generation electrode materials with high energy density is of the utmost significance There are high expectations with respect to the development of lattice oxygen redox (LOR)-a promising strategy for developing cathode materials as it renders nearly a doubling of the specific capacity However, challenges have been put forward toward the deep-seated origins of the LOR reaction and if its whole potential could be effectively realized in practical application In the following Review, the intrinsic science that induces the LOR activity and crystal structure evolution are extensively discussed Moreover, a variety of characterization techniques for investigating these behaviors are presented Furthermore, we have highlighted the practical restrictions and outlined the probable approaches of Li-based layered oxide cathodes for improving such materials to meet the practical applications