Revealing the Potential and Challenges of High‐Entropy Layered Cathodes for Sodium‐Based Energy Storage

Abstract Sodium‐ion batteries (SIBs) reflect a strategic move for scalable and sustainable energy storage. The focus on high‐entropy (HE) cathode materials, particularly layered oxides, has ignited scientific interest due to the unique characteristics and effects to tackle their shortcomings, such as inferior structural stability, sluggish reaction kinetics, severe Jahn‐Teller effects induced lattice distortion, and poor oxygen reversibility at high voltage. This review focuses on high‐entropy oxide materials, highlighting their fundamentals, design principles, and application in layered oxide cathodes for SIBs. It delves into the growth mechanism, composition‐properties correlations, and the functional roles…

• UO
  University of Technology Sydney
• SA
  Science and Technology Commission of Shanghai Municipality

  Award: 22010500400
• SU
  Shanghai University

  Award: SKLASS 2021‐04
• SK
  State Key Laboratory of Advanced Special Steel