Improving the cycling stability of LiNi 0.8 Co 0.1 Mn 0.1 O 2 by boron doping to inhibit Li/Ni mixing.

Boron doping significantly reduces the Li/Ni cation mixing of LiNi 0.8 Co 0.1 Mn 0.1 O 2 , decreases the charge transfer resistance, and improves the reversibility of the H2-H3 phase transition at 4.2 V. Among similar materials, the cathode material with 1.0 mol% boron doping shows excellent cycling performance, with capacity retention of 96% after 200 cycles at 50 °C.