investigated.A faster capacity decay of NCMs under XFC conditions is observed,especially for Ni-rich NCMs.In-situ X-ray diffraction(XRD)reveals that the multiple caxis parameters appear at the high-voltage regions in Nirich NCMs,which is probably triggered by the larger obstruction of Li(de)...
Surface Te-doping was also efficient to improve the reversibility of the H2↔H3 transition thanks to the suppression of the lattice distortion along the c-axis by strong Te–O bonds, allowing for the use of an upper voltage at 4.5 V. When cycled in the voltage range 2.7–4.5 V at 1 ...