甲基增强的高性能亚胺类锌离子电池正极材料  

High-performance imine cathode materials of zinc-ion batteries enhanced by methyl groups

作　　者：刘全丽 王张雨 耿孝东 朱楠 LIU Quanli;WANG Zhangyu;GENG Xiaodong;ZHU Nan(School of Chemistry,Dalian University of Technology,Dalian 116024,China)

机构地区：[1]大连理工大学化学学院,辽宁大连116024

出　　处：《大连理工大学学报》2025年第3期221-227,共7页Journal of Dalian University of Technology

基　　金：国家自然科学基金资助项目(22074010,22211530046);中央高校基本科研业务费专项资金资助项目(DUT23YG128);纺织新材料与先进加工技术国家重点实验室开放基金资助项目(FZ2023009);大连市生命健康领域指导计划资助项目(2022ZXYG51).

摘　　要：有机化合物由于其高容量和优异的性能而被广泛用作锌离子电池正极材料.然而,比容量低与循环寿命短限制了它们的发展.为此,设计合成了一种具有C=N(亚氨基)官能团和多甲基结构的化合物六甲基-六氮杂三萘(HATN-Me).所构建的锌离子电池在1 A/g电流密度下循环超过7000圈后仍具有87%的容量保持率.非原位分析证明了C=N是反应的活性中心,同时多甲基结构有效增强了电子传输能力.未来具有优异电化学性能和稳定性的HATN-Me正极材料将推动水系锌离子电池的发展.Organic compounds are widely used as cathode materials for zinc-ion batteries due to their high capacity and excellent performance.However,low specific capacity and short cycle life limit their developments.Therefore,a compound hexamethyl-hexaazatrinaphthalene(HATN-Me)with C=N(imino)functional group and polymethyl structure is designed.The fabricated zinc-ion battery still has a capacity retention rate of 87%after more than 7000 cycles at current density of 1 A/g.Ex-situ analysis proves that C=N is the active center,and the polymethyl structure effectively enhances the electron transport performance.Prospectively,HATN-Me cathode material with excellent electrochemical performance and stability will promote the development of aqueous zinc-ion batteries.

关 键 词：水系锌离子电池 亚胺类有机正极 甲基增强 长循环寿命 

分 类 号：TM912[电气工程—电力电子与电力传动] TB34[一般工业技术—材料科学与工程]