Intrinsic Origins of Crack Generation in Ni-rich LiNi_0.8Co_0.1Mn_0.1O₂ Layered Oxide Cathode Material.

ABSTRACT: Ni-rich LiNi_0.8Co_0.1Mn_0.1O₂ layered oxide cathodes have been highlighted for large-scale energy applications due to their high energy density. Although its specific capacity is enhanced at higher voltages as Ni ratio increases, its structural degradation due to phase transformations and lattice distortions during cycling becomes severe. For these reasons, we focused on the origins of crack generation from phase transformations and structural distortions in Ni-rich LiNi_0.8Co_0.1Mn_0.1O₂ using multiscale approaches, from first-principles to meso-scale phase-field model. Atomic-scale structure analysis demonstrated that opposite changes in the lattice parameters are observed until the inverse Li content x = 

SUBMITTER: Lim JM 

PROVIDER: S-EPMC5206713 | biostudies-literature | 2017 Jan

REPOSITORIES: biostudies-literature