Electrochemical properties of nitrogen-doped carbon nanotube anode in Li-ion batteries

被引：351

作者：

Bulusheva, L. G. ^{[2
,3
]}

Okotrub, A. V. ^{[2
,3
]}

Kurenya, A. G. ^{[2
,3
]}

Zhang, Hongkun ^{[1
]}

Zhang, Huijuan ^{[1
]}

Chen, Xiaohong ^{[1
]}

Song, Huaihe ^{[1
]}

机构：

[1] Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China

[2] Russian Acad Sci, Siberian Branch, Nikolaev Inst Inorgan Chem, Novosibirsk 630090, Russia

[3] Novosibirsk State Tech Univ, Novosibirsk 630092, Russia

来源：

CARBON | 2011年 / 49卷 / 12期

基金：

中国国家自然科学基金;

关键词：

RAY PHOTOELECTRON-SPECTROSCOPY; CHEMICAL-VAPOR-DEPOSITION; CNX NANOTUBES; CATALYST COMPOSITION; LITHIUM STORAGE; N-2; MOLECULES; RAMAN-SPECTRA; NITRIDE; ENERGY; FILMS;

D O I：

10.1016/j.carbon.2011.05.043

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：

Multi-walled nitrogen-doped carbon (CNx) nanotubes, synthesized by an aerosol-assistant catalytic chemical vapor deposition technique, were investigated for electrochemical intercalation with lithium. Nanotube morphologies and nitrogen contents in the samples produced from toluene and acetonitrile taken in various proportions were determined by transmission electron microscopy and X-ray photoelectron spectroscopy. It was found that the first discharge capacity of CNx electrodes increases with nitrogen content. The irreversible capacity was partially attributed to pyridinic-like nitrogen atoms, which can strongly bind with Li ions confirmed by result of quantum-chemical calculation. The CNx electrode with the lowest nitrogen content (similar to 1 at.%) in the considered set of the samples showed the highest reversible capacity 270 mAh g(-1) at the current density of 0.2 mA cm(-2) and the highest value of exchange current density, suggesting that the electrochemical activity of carbon nanotubes is enhanced by light incorporation of nitrogen atoms. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：4013 / 4023

页数：11

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