水热法制备纳米SnO2电极材料及其储锂性能

兰州理工大学学报 ›› 2022, Vol. 48 ›› Issue (5): 15-20.

水热法制备纳米SnO₂电极材料及其储锂性能

范影强¹, 陈秀娟^*1,2, 王琳琳¹, 吴家奎¹

1.兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室, 甘肃兰州 730050;
2.兰州理工大学机电工程学院, 甘肃兰州 730050

收稿日期:2021-10-21 出版日期:2022-10-28 发布日期:2022-11-21
通讯作者: 陈秀娟(1965-),女,甘肃兰州人,博士,教授. Email:chenxj@lut.edu.cn
基金资助:
甘肃省重点研发项目(17YF1GA020)

Hydrothermal preparation of nano-SnO₂electrode materials and their lithium storage properties

FAN Ying-qiang¹, CHEN Xiu-juan^1,2, WANG Lin-lin¹, WU Jia-kui¹

1. State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou Univ. of Tech., Lanzhou 730050, China;
2. School of Mechanical and Electronical Engineering, Lanzhou Univ. of Tech., Lanzhou 730050, China

Received:2021-10-21 Online:2022-10-28 Published:2022-11-21

摘要/Abstract

摘要： 以SnCl₂·2H₂O、聚乙二醇400(PEG400)和Na₃C₆H₅O₇·2H₂O为主要原料,采用简单的水热法制备了SnO₂负极材料.采用X射线衍射(XRD)、扫描电镜(SEM)、透射电镜(TEM)表征其组成和微观形貌,并采用恒流充放电测试、循环伏安法(CV)对样品进行电化学性能测试.结果表明:添加PEG400可以有效改善SnO₂表面形貌,减少其团聚现象并且使其电化学性能明显提高.当添加量为10 mL时,合成的SnO₂具有良好的循环及倍率性能,首次放电比容量为2 774 mAh/g,循环50次后放电比容量为600 mAh/g,电化学性能较改性前的SnO₂有了明显改善.

关键词: 水热法, SnO₂, 锂离子电池负极材料, 电化学性能

Abstract: SnO₂ anode material was prepared by a simple hydrothermal method using SnCl₂·2H₂O, polyethylene glycol 400 (PEG400) and Na₃C₆H₅O₇·2H₂O as the main raw materials. The composition and microscopic morphology of the prepared negative materials were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Theelectrochemical properties were also tested using galvanostatic charge/discharge (DC) and cyclic voltammetry (CV) methods. The results showed that the addition of PEG400 can effectively improve the surface morphology of SnO₂, reduce its agglomeration phenomenon and significantly improve the electrochemical properties. When the addition content was 10 mL, the synthesized SnO₂ has good cycling and multiplicative performance with a first discharge capacity of 2 774 mAh/g andthe discharge capacity of 600 mAh/g after 50 cycles, which was significantly higher than that of SnO₂ electrode materialsbefore the modification.

Key words: hydrothermal, SnO₂, Lithium-ion battery anode material, electrochemical performance

中图分类号:

TB383.1

范影强, 陈秀娟, 王琳琳, 吴家奎. 水热法制备纳米SnO₂电极材料及其储锂性能[J]. 兰州理工大学学报, 2022, 48(5): 15-20.

FAN Ying-qiang, CHEN Xiu-juan, WANG Lin-lin, WU Jia-kui. Hydrothermal preparation of nano-SnO₂electrode materials and their lithium storage properties[J]. Journal of Lanzhou University of Technology, 2022, 48(5): 15-20.

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水热法制备纳米SnO₂电极材料及其储锂性能

Hydrothermal preparation of nano-SnO₂electrode materials and their lithium storage properties

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