Fig. 1: Competitive mechanism of pronation and relithiation of NCM materials.
From: Proton-exchange induced reactivity in layered oxides for lithium-ion batteries
a–c Li+ concentrations in NCM111, 523, 622, and 811 after chemical delithiation (D-NCM), and treatment of pure water (W-NCM) and 4M LiOH solution (4M-NCM). (d) TG curves of NCM111, 523, 622, and 811 after treatment of pure water treatment and 4M LiOH solution. e Schematic illustration depicting the competitive mechanism of protonation and relithiation in NCM materials. The yellow ball represents Li. The purple ball represents H. The blue ball represents TM. The pink ball represents O. Source data are provided as a Source Data file.
