Fabrication of free-standing aligned multiwalled carbon nanotube array for Li-ion batteries

被引：31

作者：

Bulusheva, L. G. ^{[1
,2
]}

Arkhipov, V. E. ^{[1
]}

Fedorovskaya, E. O. ^{[1
,2
]}

Zhang, Su ^{[3
]}

Kurenya, A. G. ^{[1
]}

Kanygin, M. A. ^{[1
,2
]}

Asanov, I. P. ^{[1
,2
]}

Tsygankova, A. R. ^{[1
,2
]}

Chen, Xiaohong ^{[3
]}

Song, Huaihe ^{[3
]}

Okotrub, A. V. ^{[1
,2
]}

机构：

[1] Russian Acad Sci, Siberian Branch, Nikolaev Inst Inorgan Chem, 3 Acad Lavrentiev Ave, Novosibirsk 630090, Russia

[2] Novosibirsk State Univ, 2 Pirogova Str, Novosibirsk 630090, Russia

[3] Beijing Univ Chem Technol, Beijing Key Lab Electrochem Proc & Technol Mat, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China

来源：

JOURNAL OF POWER SOURCES | 2016年 / 311卷

基金：

俄罗斯基础研究基金会; 中国国家自然科学基金;

关键词：

Vertically aligned multiwalled carbon nanotubes; CCl4; treatment; Free-standing array; Li-ion battery; ELECTROCHEMICAL PERFORMANCE; SUPERCAPACITOR PERFORMANCE; ENERGY-STORAGE; ELECTRODES; ANODES; GRAPHITE; CHLORINATION; INTERFACE; STABILITY; CAPACITY;

D O I：

10.1016/j.jpowsour.2016.02.036

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We show that a high-temperature CCl4 vapor treatment of vertically aligned multiwalled carbon nanotubes (VA-MWCNTs) grown on silicon substrate allows carefully detach the array from the substrate. Moreover, this procedure partially purifies the VA-MWCNTs from the residual iron catalyst. To improve electrical connectivity of free-standing VA-MWCNTs in an electrochemical cell, the array was placed between the layers of Ni foam. Such assembly demonstrated the better performance in Li-battery as compared to the disordered MWCNTs. After 50 cycles, the specific capacity of VA-MWCNT array synthesized from 0.5 wt% ferrocene solution in toluene was 350 mAh g(-1) at a current density of 0.1 A g(-1), while the battery with the disordered MWCNTs achieved 197 mAh g(-1) only. By the results of electrochemical impedance spectroscopy, the higher capacity of VA-MWCNTs was attributed to larger surface area available for electrolyte and Li ions due to the absence of binder coating. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：42 / 48

页数：7

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