High Entropy Layered Cathode With Single Grain Morphology for High-Performance Sodium-Ion Batteries.

ABSTRACT: A major obstacle in the advancement of sodium-ion batteries (SIBs) is the development of cathode active materials (CAMs) that offer both high specific capacity and long-term cycling stability. Among the various candidates, layered CAMs have attracted significant attention. In this work, we synthesized a high-entropy layered CAM with composition (Na_0.52Ti_0.19Mn_0.19Fe_0.21Ni_0.21Co_0.20O₂) using a spray pyrolysis technique, yielding large (0.75 µm on average) and separated grains. The resulting material comprises a P3-O3 layered oxide mixture, along with ∼20% rock-salt and spinel phases. This CAM demonstrates a high specific capacity (∼180 mAh g^-1 at 0.08 C), excellent rate capability (69% retention after 30

SUBMITTER: Callegari D 

PROVIDER: S-EPMC12921545 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature