Li Xinliang, Wang Shixun, Zhang Dechao, Li Pei, Chen Ze, Chen Ao, Huang Zhaodong, Liang Guojin, Rogach Andrey L, Zhi Chunyi
Key Laboratory of Material Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou, 450052, China.
Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon Tong, Hong Kong SAR, 999077, China.
Adv Mater. 2024 Jan;36(4):e2304557. doi: 10.1002/adma.202304557. Epub 2023 Dec 3.
Although conversion-type iodine-based batteries are considered promising for energy storage systems, stable electrode materials are scarce, especially for high-performance multi-electron reactions. The use of tin-based iodine-rich 2D Dion-Jacobson (DJ) ODASnI (ODA: 1,8-octanediamine) perovskite materials as cathode materials for iodine-based batteries is suggested. As a proof of concept, organic lithium-perovskite and aqueous zinc-perovskite batteries are fabricated and they can be operated based on the conventional one-electron and advanced two-electron transfer modes. The active elemental iodine in the perovskite cathode provides capacity through a reversible I /I redox pair conversion at full depth, and the rapid electron injection/extraction leads to excellent reaction kinetics. Consequently, high discharge plateaus (1.71 V vs Zn /Zn; 3.41 V vs Li /Li), large capacity (421 mAh g ), and a low decay rate (1.74 mV mAh g ) are achieved for lithium and zinc ion batteries, respectively. This study demonstrates the promising potential of perovskite materials for high-performance metal-iodine batteries. Their reactions based on the two-electron transfer mechanism shed light on similar battery systems aiming for decent operational stability and high energy density.
尽管转换型碘基电池被认为在储能系统方面很有前景，但稳定的电极材料却很稀缺，尤其是用于高性能多电子反应的材料。有人建议使用基于锡的富碘二维狄翁-雅各布森（DJ）型ODASnI（ODA：1,8-辛二胺）钙钛矿材料作为碘基电池的阴极材料。作为概念验证，制备了有机锂-钙钛矿电池和水系锌-钙钛矿电池，它们可以基于传统的单电子和先进的双电子转移模式运行。钙钛矿阴极中的活性元素碘通过在全深度的可逆I⁻/I⁰氧化还原对转换提供容量，并且快速的电子注入/提取导致优异的反应动力学。因此，锂和锌离子电池分别实现了高放电平台（相对于Zn²⁺/Zn为1.71 V；相对于Li⁺/Li为3.41 V）、大容量（421 mAh g⁻¹）和低衰减率（1.74 mV mAh⁻¹ g⁻¹）。这项研究证明了钙钛矿材料在高性能金属-碘电池方面的潜在前景。它们基于双电子转移机制的反应为旨在实现良好运行稳定性和高能量密度的类似电池系统提供了启示。
