Optimization of thin-film Li1.0Ni0.6Co0.2Mn0.2O2 cathodes enabled by rapid thermal processing in oxygen-rich environments for superior lithium-ion battery performance

Ni-rich Li 1.0 Ni 0.6 Co 0.2 Mn 0.2 O 2 (NCM622) thin-film cathodes via O 2 rich rapid thermal annealing at 600 °C, show enhanced crystallinity, suppresses Pt hillocks, and 646.8 mAh cm −3 capacity with 81% retention, ideal for miniaturized devices.