Improved electrochemical performance of Li(Ni0.6Co0.2Mn0.2)O2 at high charging cut-off voltage with Li1.4Al0.4Ti1.6(PO4)3 surface coating

Improved electrochemical performance of Li(Ni_0.6Co_0.2Mn_0.2)O₂ at high charging cut-off voltage with Li_1.4Al_0.4Ti_1.6(PO₄)₃ surface coating

Wang Yi^{1, 2}, Liu Bo-Nan³, Zhou Ge^{1, 2}, Nie Kai-Hui^{1, 2}, Zhang Jie-Nan^{1, ‡}, Yu Xi-Qian^{1, 2, †}, Li Hong^{1, 2, 3}

(a) Quantitative analysis of O 1s and P 2p XPS spectra of bare and LATP modified NCM622 materials. (b) Schematic diagram for the surface evolution of LATP modified NCM622 during annealing process.