Back Cover Image, Volume 8, Number 4, April 2026

Résumé fourni par la source

Back cover image: Layered O3-phase cathode materials are a powerful aid for sodium-ion batteries to replace lithium-ion batteries, but have hinder their application by poor air and structure stability. In article number CEY270115, Li at al. precise regulate a radial gradient distribution of sodium content, phase structure, and transition metal valence of P/O cathode through precursor-based secondary heterogeneous coprecipitation and solid3-state sintering. this radially continuous P2/O3–O composite constructs a strong oxide impedance layer to suppress Na+/H+ exchange reactions and acid erosion under conditions of 82% humidity and 3330 ppm CO2 concentration to maintain material structural stability and prevent blockage of sodium-ion transport channels. Meanwhile, this radial gradient distribution design effectively mitigate lattice distortions, optimize sodium ion transport of the materials. This approach reveals the transition mechanisms between different hierarchical phases.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.