The study of multi-walled carbon nanotubes with different diameter as anodes for lithium-ion batteries
The study of multi-walled carbon nanotubes with different diameter as anodes for lithium-ion batteries
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DOI：
10.1016/j.apsusc.2012.01.067
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发表时间：
2012-03
影响因子：
6.7
通讯作者：
Yanping Zhang;Taiqiang Chen;Jinhe Wang;Guoquan Min;L. Pan;Zhitang Song;Zhuo Sun;Weimin Zhou;Jing Zhang
中科院分区：
文献类型：
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作者：
Yanping Zhang;Taiqiang Chen;Jinhe Wang;Guoquan Min;L. Pan;Zhitang Song;Zhuo Sun;Weimin Zhou;Jing Zhang
采用不同直径范围的多壁碳纳米管（MWCNTs）作为锂离子电池负极材料。通过形貌和结构表征、氮吸附和解吸测量、充放电测试和电化学阻抗谱（EIS）研究了直径和孔结构对MWCNTs电化学行为的影响。结果表明，当充放电倍率为50mAg−1时，直径为40 ~ 60nm的MWCNTs具有最高的比容量（187.4mAhg−1）和良好的循环性能（循环50次后库仑效率为101.9%）。优异的电化学性能验证了MWCNTs作为锂离子电池阳极的可行性。
Multi-walled carbon nanotubes (MWCNTs) with different diameter range are employed as the anode materials in lithium-ion batteries (LIBs). The influence of diameter and pore structure on the electrochemical behavior of MWCNTs has been investigated by characterization of morphology and structure, nitrogen adsorption and desorption measurement, charge/discharge tests, and electrochemical impedance spectroscopy (EIS). The results show that MWCNTs with a diameter of 40–60nm display the highest specific capacity (187.4mAhg−1at the charge/discharge rate of 50mAg−1) and good cyclability (101.9% Coulomb efficiency after 50 cycles). The excellent electrochemical performance verifies the feasibility of MWCNTs as a promising candidate for the anode of LIBs.