Preparation of flower-like CuO by a simple chemical precipitation method and their application as electrode materials for capacitor

被引：109
|
作者：
Zhang, Hongxia [1 ]
Feng, Jing [1 ]
Zhang, Milin [1 ]
机构：
[1] Harbin Engn Univ, Minist Educ, Key Lab Superlight Mat & Surface Technol, Harbin 150001, Heilongjiang, Peoples R China
来源：
MATERIALS RESEARCH BULLETIN | 2008年 / 43卷 / 12期
关键词：
Nanostructure; Chemical synthesis; Crystal growth; Electrochemical properties;
D O I：
10.1016/j.materresbull.2008.03.003
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A novel CuO electrode material with flower-like nanostructures was fabricated at a low temperature (80 degrees C) by a simple chemical precipitation method. Scanning electron microscopy (SEM) results showed that CuO with spherical and flower-like structure can be formed under a weak alkali (C6H12N4), and CuO with sheets structure can be obtained under a strong alkali (NaOH). A possible growth mechanism of CuO nanocrystals was discussed. The flower-like CuO electrode exhibited a higher specific capacitance (133.6 Fg(-1)) and an excellent cycle performance at a high current density of 10 mA/cm(2). Specific capacitance of flower-like CuO was 405.3% higher than globular CuO (26.44 Fg(-1)) at 2 mA/cm(2). (c) 2008 Elsevier Ltd. All rights reserved.
引用
收藏
页码：3221 / 3226
页数：6
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