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Advances in high-entropy oxides for reversible protonic ceramic cells applications

Author

Listed:
  • Sun, Longfei
  • Wang, Jianxiong
  • Hu, Zitong
  • Chen, Wei
  • Sun, Chunwen

Abstract

Reversible protonic ceramic cells (R-PCCs) have attracted considerable attention due to their promising performance in intermediate temperature operation. However, their further development is impeded by performance limitations of key components, including electrodes and electrolytes. High-entropy oxides (HEOs) offer a novel strategy to address these challenges, leveraging their specific compositional flexibility, entropy stabilization effects and synergistic multi-active-site interactions. This review comprehensively summarizes recent advances in the application of HEOs in R-PCCs, with emphasis on their underlying mechanisms, material design strategies, synthesis routes, advanced characterization techniques and specific applications in electrodes and electrolytes. Furthermore, current challenges and prospective research directions are critically discussed, providing valuable scientific insights and technical support for the development of novel high-performance material systems for next-generation R-PCCs.

Suggested Citation

  • Sun, Longfei & Wang, Jianxiong & Hu, Zitong & Chen, Wei & Sun, Chunwen, 2026. "Advances in high-entropy oxides for reversible protonic ceramic cells applications," Applied Energy, Elsevier, vol. 411(C).
    • Handle: RePEc:eee:appene:v:411:y:2026:i:c:s0306261926002473
    DOI: 10.1016/j.apenergy.2026.127595
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