Study on Synthesis and Modification of SnO2 @voids@C-SnO as Anode Material for Lithium-Ion Battery by Self-assembled CaCO3 Template Method

被引：0
|
作者：
Hao X.-J. [1 ,2 ]
Hu J.-N. [1 ,2 ]
Zhao H. [1 ,2 ]
Li J.-Z. [1 ,2 ]
机构：
[1] Key Laboratory for Ecological Metallurgy of Multimetallic Ores, Ministry of Education, Northeastern University, Shenyang
[2] School of Metallurgy, Northeastern University, Shenyang
来源：
Dongbei Daxue Xuebao/Journal of Northeastern University | 2023年 / 44卷 / 03期
关键词：
anode material; porous; SnO[!sub]2[!/sub; sol-gel method; template method;
D O I：
10.12068/j.issn.1005-3026.2023.03.008
中图分类号：
学科分类号：
摘要：
A SnO2 @ voids @ C-SnO material with three-dimensional hierarchical-porous carbon skeleton structure was prepared by using CaCO3 as template. Then, Ni element was doped in the SnO2 @ voids@ C-SnO material by a sol-gel method. The crystal structure and morphology of the prepared sample were characterized by XRD and SEM, respectively, and the electrochemical performance of the above sample-based battery was tested. The results show that the first discharge specific capacity of the SnO2 @ voids@ C-SnO material at 50 mA•g - 1 was 1 092 mAh•g - 1 . The specific capacity of the SnO2 @ voids@ C-SnO material can be effectively increased by Ni doping. A 25% Ni-doped material obtained the highest first discharge specific capacity of 1 414. 6 mAh•g - 1 , and still had a higher discharge specific capacity of 617 mAh•g - 1 after 70 cycles, the sample also showed high-rate performance. The increased particle dispersion after Ni doping was conducive to decreasing volume expansion, thus, endowing the Ni-doped SnO2 @ voids@ C-SnO material with high electrochemical properties. © 2023 Northeastern University. All rights reserved.
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页码：363 / 369
页数：6
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