均苯三甲酸铜-C@蒽绛酚新型复合材料的制备及用作锂离子电池正极材料性能  

Preparation of new composite of KUST-1-C@anthrarufin and its performance as positive material for lithium ion battery

作　　者：孙悦 王筑城 王存国[1] SUN Yue;WANG Zhucheng;WANG Cunguo(Key Laboratory of Rubber plastics,Ministry of Education,Shandong Province Key Lab.of Olefin Catalysis and Polymerization,Qingdao University of Science and Technology,Qingdao 266042,China)

机构地区：[1]青岛科技大学橡塑材料与工程教育部重点实验室,山东省橡塑材料与工程重点实验室,山东青岛266042

出　　处：《化工科技》2022年第4期43-48,共6页Science & Technology in Chemical Industry

基　　金：山东省教育厅项目(SDYJG19089);山东省潍坊市高层次创新创业人才计划项目(潍办字2013-69).

摘　　要：有机共轭小分子电极材料由于其电导率低和在电解液中的易溶性等缺陷阻碍了其作为二次电池电极材料的广泛应用.通过水热合成法和固相熔融法制备出了金属有机骨架(MOFs)结构框架的均苯三甲酸铜(HKUST-1)与有机碳基分子蒽绛酚的复合材料(HKUST-1-C@蒽绛酚).研究表明,HKUST-1-C@蒽绛酚复合正极材料,具有优异的电化学性能特点,在0.1A/g电流密度下,首次放电比容量高于220mA·h/g,200次循环后,仍保持162mA·h/g的放电比容量.这主要是由于碳化后的HKUST-1-C作为良好的导电网络提高了蒽绛酚电极材料的电子和离子迁移速度,并且由于蒽绛酚被装载于碳骨架中,抑制和减缓了其在电解液中的溶解现象,因而提高了电池的循环寿命.The application of organic conjugated small molecule materials in secondary battery electrode materials is limited due to its low conductivity and easy solubility in electrolyte.In this paper,the new composite(HKUST-1-C@anthrarufin)was prepared by hydrothermal synthesis and heat-treatment methods with metal organic framework materials(MOFs)and organic conjugated molecule materials anthrarufin(i.e.1,5-dihydroxyanthraquinone).The results show that HKUST-1-C@anthrarufin crimson phenol composite cathode material has excellent electrochemical properties compared with pure anthrarufin material.Under the current density of 0.1 A/g,the first discharge capacity of the new composite reaches more than 220 mA·h/g.After 200 cycles,it still maintains the discharge specific capacity of 162 mA·h/g and has good long cycle performance.This is mainly because the carbonized HKUST-1-C as a conductive network improves the electron and ion migration speed of anthrarufin electrode material.Moreover,because anthrarufin is loaded in the carbon skeleton,its dissolution in the electrolyte is inhibited and slowed down,so the cycle life of the battery is improved.

关 键 词：锂离子电池 电极材料 蒽绛酚 金属有机骨架材料 

分 类 号：TM912[电气工程—电力电子与电力传动]