Design principles of practical industrial-scale layered oxide cathodes with air/water stability for sustainable sodium-ion batteries.

ABSTRACT: Low-cost manganese-based oxides as promising cathodes for sodium-ion batteries still face significant challenges, including irreversible phase transition, air/water sensitivity, and low initial charge capacity. Herein, we precisely design a titanium-substituted Mn-based oxide cathode material with optimized local electronic structure distribution through a stepwise screening mechanism based on theoretical calculations, which enables suppression of irreversible phase transition and Jahn-Teller distortion by exerting spring effect and pinning effect. Notably, the optimized cathode fabricated using an aqueous binder exhibits stable electrochemical performance, retaining 96.16 % of its capacity after 500 cycles at 1 A g^-1, along with reliable air/water stability under prolonged expo

SUBMITTER: Jia XB 

PROVIDER: S-EPMC12647261 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature