LAUSR

The nickel-rich cathode material Li(Ni0.6Co0.2Mn0.2)O2 has begun to attract widespread attentions because of its high capacity and relatively low cost. However, the cyclic stability of Li(Ni0.6Co0.2Mn0.2)O2 is poor when comparing other types of cathode materials. After blending with perovskite-structured solid electrolyte Li0.375Sr0.4375Hf0.25Ta0.75O3, the capacity retention of the Li(Ni0.6Co0.2Mn0.2)O2 raises obviously, from 72.47% to 86.11%. It is mainly due to the solid electrolyte Li0.375Sr0.4375Hf0.25Ta0.75O3 can increase the lithium-ion conduction and reduce the electrolytic polarization effectively, which are benefit to the cyclic stability. Moreover, when comparing the pristine sample and the blending sample, the 0.1 C/3 C ratio of blending sample raises from 73.16% to 79.63%, implying that the blending materials have a potential to apple in the field of fast-charging.