Microstructural and electrochemical characterization of RuO2/CNT composites synthesized in supercritical diethyl amine

被引：46

作者：

Sun, ZY ^{[1
]}

Liu, ZM ^{[1
]}

Han, BX ^{[1
]}

Miao, SD ^{[1
]}

Du, JM ^{[1
]}

Miao, ZJ ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Chem, Ctr Mol Sci, Beijing 100080, Peoples R China

来源：

CARBON | 2006年 / 44卷 / 05期

基金：

中国国家自然科学基金;

关键词：

carbon nanotubes; oxidation; electron microscopy; electrochemical properties;

D O I：

10.1016/j.carbon.2005.10.023

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 [物理化学]; 081704 [应用化学];

摘要：

A simple and efficient route to decorate carbon nanotubes (CNTs) with nanocrystalline RuO2 has been developed. In this method, RUCl3-3H(2)O was oxidized into RuO2 by oxygen in supercritical diethyl amine, and the produced RuO2 deposited on CNTs, resulting in RuO2/CNT nanocomposites. The as-prepared composites were structurally and morphologically characterized by X-ray diffraction, X-ray photoelectron spectroscopy, and transmission electron microscopy (TEM). TEM images showed that RuO2 nanoparticles attached on CNTs had uniform shape and a narrow particle size distribution. The loading content and the size of RuO2 particles on CNTs could be tuned by changing the mass ratio of RuCl3-3H(2)O/CNT. Electrochemical measurements by cyclic voltammetry demonstrated a substantial increment of the specific capacitance of CNTs due to a pseudocapacitance originated from the deposited RuO2 nanoparticles. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：888 / 893

页数：6

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