Surface-to-bulk engineering with high-valence W⁶⁺ enabling stabilized single-crystal LiNi_0.9Co_0.05Mn_0.05O₂ cathode

Single-crystal Nickel-rich layered oxides has been recognized as one of the promising cathodes for next-generation Li-ion batteries, while its practical application was hindered by structural instability and deteriorated Li⁺ transfer kinetics. We reported a one-step high-valence W⁶⁺ modification to realize surface-to-bulk engineered single-crystal LiNi_0.9Co_0.05Mn_0.05O₂ (Ni90) cathode. As described by this cover, the introduction of W dopant occupying the transition metal sites coordinates with the fast ion conductor Li₂WO₄ layer formed on the surface, to stabilize the cathode/electrolyte interface and facilitates the Li⁺ transport. This work deepens the understanding of the role of high-valence cations and provides clues for design of high-performance layered cathodes.

Surface-to-bulk engineering with high-valence W⁶⁺ enabling stabilized single-crystal LiNi_0.9Co_0.05Mn_0.05O₂ cathode

Single-crystal Nickel-rich layered oxides has been recognized as one of the promising cathodes for next-generation Li-ion batteries, while its practical application was hindered by structural instability and deteriorated Li⁺ transfer kinetics. We reported a one-step high-valence W⁶⁺ modification to realize surface-to-bulk engineered single-crystal LiNi_0.9Co_0.05Mn_0.05O₂ (Ni90) cathode. As described by this cover, the introduction of W dopant occupying the transition metal sites coordinates with the fast ion conductor Li₂WO₄ layer formed on the surface, to stabilize the cathode/electrolyte interface and facilitates the Li⁺ transport. This work deepens the understanding of the role of high-valence cations and provides clues for design of high-performance layered cathodes.