新材料与新技术

锂离子电池用氧化锌/螺旋纳米碳纤维复合负极材料的制备及性能研究

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  • 1.四川轻化工大学材料科学与工程学院,自贡643000;
    2.巴中意科碳素股份有限公司,巴中636000
卿婷(1996-),女,硕士,主要从事碳及碳化物材料的研究,E-mail:834011850@qq.com。

收稿日期: 2020-08-04

  修回日期: 2020-11-12

  网络出版日期: 2021-03-03

基金资助

四川省科技厅项目(2019YJ0479和2019YFG0072);四川轻化工大学研究生基金项目(y2019025)

Preparation and property of ZnO/HCNFs composite anode material for Li-ion battery

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  • 1. School of Materials Science and Engineering,Sichuan University of Light Chemical Engineering,Zigong 643000;
    2. Bazhong Yike Carbon Co.,Ltd.,Bazhong 636000

Received date: 2020-08-04

  Revised date: 2020-11-12

  Online published: 2021-03-03

摘要

以二水乙酸锌、一缩二乙二醇为原料,通过溶胶-凝胶法制备出氧化锌/螺旋纳米碳纤维(ZnO/HCNFs)复合材料。使用X射线衍射仪(XRD)、热重分析仪(TG)和扫描电子显微镜(SEM)等表征手段研究了ZnO/HCNFs复合材料的形貌结构,通过恒流充放电测试仪对材料的电化学性能进行测试。结果表明:ZnO颗粒均匀负载于 HCNFs表面,粒径约为20~50nm。ZnO/HCNFs复合材料在200mA/g的电流密度下,其首次充放电比容量分别达到977mAh/g与788mAh/g,库仑效率为81%,经过100次循环以后,容量仍保持在501mAh/g,电化学性能较优异。

本文引用格式

卿婷, 金永中, 张正权, 房勇, 龚勇, 陈戈 . 锂离子电池用氧化锌/螺旋纳米碳纤维复合负极材料的制备及性能研究[J]. 化工新型材料, 2021 , 49(2) : 113 -116 . DOI: 10.19817/j.cnki.issn 1006-3536.2021.02.026

Abstract

Zinc oxide/helical carbon nanofibers (ZnO/HCNFs) composite was prepared by sol-gel method from zinc acetate dihydrate and diethylene glycol.The morphology and structure of ZnO/HCNFs were characterized by X-ray diffraction (XRD),thermogravimetric analyzer (TG) and scanning electron microscope (SEM).The electrochemical performance of ZnO/HCNFs were tested by A constant current charge-discharge tester.The results shown that ZnO particles with the particle size of about 20~50nm were uniformly decorated on the surface of HCNFs.It's first discharge and charge specific capacity reached 977mAh/g and 978mAh/g respectively,and the coulomb efficiency was 81% under the current density of 200mA/g.After 100 cycles,the specific capacity remains at 501mAh/g,which shown excellent electrochemical performance.

参考文献

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