Entropy regulation induced hollow prismatic structural NiCoFeInZnV-based layered double hydroxide with prominent electrochemical kinetics and stability for aqueous zinc-ion batteries

作者：Yang Liu, Tao Yu Zou, Haihui Wu, Jiqing Zhang, Xuekun Sui, Wenjing Zhang, E. J. Feng, Xiaohui Guan, Bao Liu, Jingru Bai, Penggang Yin, Guangsheng Wang · 发表于：Journal of Energy Chemistry · 年份：2025 · DOI：10.1016/j.jechem.2025.08.054 · 被引用次数：15 · 研究领域：Advanced battery technologies research、Supercapacitor Materials and Fabrication、Electrocatalysts for Energy Conversion

Layered double hydroxides (LDHs) hold great promise as cathode materials for aqueous zinc-ion batteries (AZIBs). Nevertheless, they also face challenges of sluggish kinetics and rapid capacity loss. Herein, a conformational entropy regulation strategy has been applied to surmount the shortcomings. A medium-entropy iron-based metal organic framework (MIL-88) derived NiCoFeInZnV-based layered double hydroxide with carbon loaded (ME-NiCoFeInZnV-LDH/C) has been first proposed and prepared with a designed method. The increased entropy optimizes electron conductivity and alleviates structure alteration and diffusion barrier during interactions with charge carriers, due to electron-induced effect and “cocktail” effect. Moreover, the nanosheet assembled hollow prismatic structures could homogenize flux distribution and electric field distribution. Therefore, the electrochemical kinetics, crystal structure stability, and activity could be dramatically improved. Leveraging the advantages of structure and composition regulation, Zn||ME-NiCoFeInZnV-LDH/C zinc battery delivers high specific capacities, rate performance, and cycling stability. This work proposes a novel and feasible medium-entropy strategy to prepare a high-performance cathode for advanced AZIBs, which is of prominent significance for the development of charge storage devices.