High performance Cr, N-codoped mesoporous TiO2 microspheres for lithium-ion batteries

被引：64

作者：

Bi, Zhonghe ^{[1
]}

Paranthaman, M. Parans ^{[1
]}

Guo, Bingkun ^{[1
]}

Unocic, Raymond R. ^{[2
]}

Meyer, Harry M., III ^{[2
]}

Bridges, Craig A. ^{[1
]}

Sun, Xiao-Guang ^{[1
]}

Dai, Sheng ^{[1
]}

机构：

[1] Oak Ridge Natl Lab, Div Chem Sci, Oak Ridge, TN 37831 USA

[2] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA

来源：

JOURNAL OF MATERIALS CHEMISTRY A | 2014年 / 2卷 / 06期

关键词：

CARBON NANOTUBES; ANODE MATERIAL; ANATASE; STORAGE; INTERCALATION; SPHERES; NANOSTRUCTURES; NANOCOMPOSITE; REACTIVITY; LIFEPO4;

D O I：

10.1039/c3ta14535b

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：

Cr, N-codoped TiO2 mesoporous microspheres have been successfully synthesized by a facile hydrothermal reaction followed by annealing under an ammonia atmosphere. Through introduction of Cr, the nitrogen doping level was increased from 2.81 at.% for N-doped TiO2 to 5.68 at.% for Cr, N-codoped TiO2, which improves the electrical conductivity of TiO2. When used as an anode for lithium-ion rechargeable batteries, the Cr, N-codoping TiO2 microspheres led to an enhanced performance of 159.6 mA h g(-1) at 5 C with a drop of less than 1% after 300 cycles.

引用

页码：1818 / 1824

页数：7

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