Improving the cycling stability of LiNiCoMnO by boron doping to inhibit Li/Ni mixing.

Boron doping significantly reduces the Li/Ni cation mixing of LiNiCoMnO, 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.