Page 208 - 《精细化工》2021年第11期
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第 38 卷第 11 期 精 细 化 工 Vol.38, No.11
2021 年 11 月 FINE CHEMICALS Nov. 2021
有机电化学与工业
金属有机聚合物衍生 Co O 的制备及其储锂性能
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陈修栋 1,2 ,柯江南 ,严 平 1,2* ,刘金杭 ,汪亚威 ,杨志鹏
(1. 九江学院 化学化工学院,江西 九江 332005;2. 江西省生态化工工程技术研究中心,江西 九江 332005)
摘要:以偏苯三甲酸和 Co(NO 3 ) 2 •6H 2 O 为原料,通过溶剂热法合成了一种钴基金属有机聚合物(Co-MOP)。然
后对 Co-MOP 进行高温(500、600、700 ℃)煅烧得到 Co-MOP 衍生材料(Co-MOP-500、Co-MOP-600、
Co-MOP-700)。采用 XRD、SEM、TEM、XPS、BET 对 Co-MOP 及其衍生材料进行了结构和形貌表征。将 Co-MOP
衍生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 衍生材料均为 Co 3 O 4 ,
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Co-MOP-600 形成了较为稳定结构的多孔球,较好地保持了 Co-MOP 的形貌,其比表面积为 19.9 m /g。
Co-MOP-600 具有优异的电化学性能。在 100 mA/g 电流密度下,Co-MOP-600 电极的首圈放电比容量达到 1818.5
mA·h/g,循环 100 圈后其比容量还能维持在 1308.5 mA·h/g,Co-MOP-600 稳定的多孔球形结构为锂离子的储存
提供了更多的活性位点和运输通道。
关键词:钴基金属有机聚合物;Co 3 O 4 ;负极材料;锂离子电池;有机电化学与工业
中图分类号:TQ317;TM912 文献标识码:A
文章编号:1003-5214 (2021) 11-2354-06 开放科学 (资源服务) 标识码 (OSID):
Preparation of metal organic polymer derived Co 3O 4 and
its lithium storage properties
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CHEN Xiudong , KE Jiangnan , YAN Ping 1,2* , LIU Jinhang , WANG Yawei , YANG Zhipeng
(1. School of Chemistry and Chemical Engineering, Jiujiang University, Jiujiang 332005, Jiangxi, China; 2. Jiangxi
Province Engineering Research Center of Ecological Chemical Industry, Jiujiang 332005, Jiangxi, China)
Abstract: A cobalt-based metal-organic polymer (Co-MOP) was synthesized by solvothermal method using
trimellitic acid and Co(NO 3) 2•6H 2O as raw materials. Subsequently, Co-MOP derivative materials
(Co-MOP-500, Co-MOP-600 and Co-MOP-700) were obtained via high-temperature (500, 600 and 700 ℃)
calcination. The structure and morphology of Co-MOP and its derivatives were characterized by XRD,SEM,
TEM, XPS and BET. The Co-MOP derived materials were used as anode material for lithium ion battery,
respectively, and their electrochemical performance was tested. The results showed that these Co-MOP
derived materials were Co 3O 4. Co-MOP-600 formed a relatively stable structure of porous spheres with a
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specific surface area of 19.9 m /g, and maintained the morphology of Co-MOP well. Co-MOP-600
exhibited excellent electrochemical performance. At a current density of 100 mA/g, the first discharge
specific capacity of Co-MOP-600 electrode reacheed 1818.5 mA·h/g, and the specific capacity could be
maintained at 1308.5 mA·h/g after 100 cycles. The stable porous spherical structure of Co-MOP-600
provided more active sites and transport channels for lithium ion storage.
Key words: cobalt-base metal organic polymers; Co 3 O 4 ; anode materials; lithium ion battery; electro-organic
chemistry and industry
随着化石燃料的日益减少,寻求高效储能器件 成为当前研究的热点。目前,研究者们已开发了许
收稿日期:2021-06-21; 定用日期:2021-08-16; DOI: 10.13550/j.jxhg.20210641
基金项目:国家自然科学基金(22065017,21864015);江西省自然科学基金(20202BABL213012);大学生创新创业计划项目
(202011843021,S202011843020);江西省教育厅科学基金(GJJ190928);九江市科技计划项目(S2021QNZZ020,S2021TDJS009)
作者简介:陈修栋(1989—),男,讲师,E-mail:chenxiudong_@126.com。联系人:严 平(1964—),男,教授,E-mail:ypjjtu@126.
com;刘金杭(1985—),男,讲师,E-mail:429162235@qq.com。