Periodic law-guided design of highly stable O3-type layered oxide cathodes for practical sodium-ion batteries.

ABSTRACT: O3-type NaNi_0.5Mn_0.5O₂ cathode material exhibits significant potential for sodium-ion batteries (SIBs) owing to its high theoretical capacity and ample sodium reservoir. Nonetheless, its practical implementation encounters considerable obstacles, such as impaired structural integrity, sensitivity to moisture, inadequate high-temperature stability, and being unstable under high-voltage conditions. This study investigates the co-substitution of Cu, Mg, and Ti, guided by principles of the periodic law, to enhance the material's stability under varying conditions. The substituent elements were selected based on their atomic properties and introduced into specific sites within the structure: Cu and Mg were substituted at Ni sites, while Ti replaced Mn sites. The

SUBMITTER: Wu YB 

PROVIDER: S-EPMC11776932 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature