The Role of High‐Entropy Materials in Lithium‐Based Rechargeable Batteries

• Published in: Advanced functional materials 2024-05, Vol.34 (18), p.n/a
• Main Authors: Guo, Rongnan, Yang, Yi, Zhao, Chongchong, Huo, Feng, Xue, Jiaojiao, He, Jinhai, Sun, Bowen, Sun, Zixu, Liu, Hua Kun, Dou, Shi Xue
• Format: Article
• Language: English
• Subjects: Aqueous electrolytes; Batteries; catalysts; electrode materials; Electrolytes; Entropy; high‐entropy materials; Ion currents; Lithium; Lithium batteries; Lithium-ion batteries; lithium‐based rechargeable batteries; Molten salt electrolytes; Morphology; Reaction kinetics; Rechargeable batteries; Solid electrolytes
• ISSN: 1616-301X; 1616-3028
• DOI: 10.1002/adfm.202313168

The low energy density, safety concerns, and high cost associated with conventional lithium‐ion batteries pose challenges in meeting the growing demands of emerging applications. While lithiumsulfur batteries (LSBs) offer high specific capacity, their commercial viability is hindered by the prevalent issue of shuttle effects. Furthermore, the potential of solid‐state lithium batteries is constrained by the suboptimal ionic conductivity and significant interphase problems. High‐entropy materials (HEMs) have emerged as a strategic approach for the development of innovative materials possessing exceptional properties. In recent times, some studies have been undertaken to explore the potential of HEMs in lithium‐based rechargeable batteries, showcasing their favorable characteristics. This work provides a comprehensive overview of the impact of various factors associated with HEM materials, encompassing elements, structure, and morphology, on the reversibility of reactions and cycling stability. This work also presents an analysis of the effects of elements and morphology on the properties of HEMs in LSBs, which can trap soluble lithium polysulfides and enhance reaction kinetics. Additionally, the work provides an overview of high‐entropy electrolytes, including both solid‐state and non‐aqueous liquid electrolytes. Furthermore, the research outlines future research directions aimed at investigating more efficient HEMs and enhancing the overall performance of lithium‐based rechargeable batteries. This work mainly reviews the impacts of high‐entropy materials such as anodes, cathodes, catalysts, and electrolytes on the electrochemical performance of lithium‐based rechargeable batteries. In addition, it presents future research directions to investigate more efficient high‐entropy materials for enhancing the overall performance of lithium‐based rechargeable batteries.