核壳纳米球钴基金属有机聚合物的制备及其储锂性能  

Core-Shell Nanosphere Cobalt-Based Metal-Organic Polymer:Preparation and Lithium Storage Performance

作　　者：陈修栋 柯江南 严平[1,2] 刘金杭 汪亚威 占昌朝 江小舵[2] CHEN Xiu-Dong;KE Jiang-Nan;YAN Ping;LIU Jin-Hang;WANG Ya-Wei;ZHAN Chang-Chao;JIANG Xiao-Duo(School of Chemistry and Chemical Engineering,Jiujiang University,Jiujiang,Jiangxi 332005,China;Jiangxi Province Engineering Research Center of Ecological Chemical Industry,Jiujiang,Jiangxi 332005,China;Jiujiang Key Laboratory of Organosilicon Chemistry and Application,Jiujiang,Jiangxi 332005,China)

机构地区：[1]九江学院化学化工学院,九江332005 [2]江西省生态化工工程技术研究中心,九江332005 [3]九江市有机硅化学与应用重点实验室,九江332005

出　　处：《无机化学学报》2022年第5期836-842,共7页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.22065017,22163003);江西省自然科学基金(No.20202BABL213012);江西省教育厅科技项目(No.GJJ211801);江西省生态化工工程技术研究中心2021年开放基金重点项目(No.STKF2108);大学生创新创业计划项目(No.S202111843068X);九江市科技计划项目(No.S2021QNZZ020,S2021TDJS009)资助。

摘　　要：以偏苯三甲酸和六水合硝酸钴为原料,通过水热法合成了2种反应时间不同的钴基金属有机聚合物(Co‑MOP)。采用X射线衍射(XRD)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)和N_(2)吸附-脱附对Co‑MOP材料进行了结构和形貌表征。将2种Co‑MOP材料用作锂离子电池负极材料,并进行了电化学性能测试。结果表明,Co‑MOP‑12(水热反应12 h)展示出了优异的电化学性能,在100 mA·g^(-1)的电流密度下,Co‑MOP‑12电极的首圈可逆比容量达到979 mAh·g^(-1),循环100圈后比容量高达1345 mAh·g^(-1)。Using trimellitic acid and cobalt nitrate hexahydrate as raw materials,two cobalt-based metal-organic polymers(Co-MOP)with different reaction times were synthesized by the hydrothermal method.The structure and morphology of Co-MOP were characterized by X-ray diffraction(XRD),scanning electron microscope(SEM),transmission electron microscope(TEM),and N_(2) adsorption-desorption test.Two cobalt-based metal-organic polymer materials were used as anode materials for lithium-ion batteries,and the electrochemical performance tests were carried out.The results showed that Co-MOP-12(hydrothermal reaction for 12 h)exhibited excellent electrochemical performance.Thefirst-cyclereversiblespecificcapacitytheofCo-MOP-12 electrodereached 979 mAh·g^(-1) atacurrent density of 100 mA·g^(-1).The specific capacity was as high as 1345 mAh·g^(-1) after 100 cycles.

关 键 词：金属有机聚合物 负极材料 锂离子电池 电化学性能 

分 类 号：TQ317[化学工程—高聚物工业] TM912[电气工程—电力电子与电力传动]