期刊
ELECTROCHIMICA ACTA
卷 180, 期 -, 页码 104-111出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2015.08.085
关键词
Co3O4 nanorods; organic molecules; self-assemble; supercapacitor
资金
- National Natural Science Foundation of China [21076056]
- Key Project of Chinese Ministry of Education [210010]
- Ph.D. Programs Foundation of Ministry of Education of China [20091317120005]
- Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry
- Program for Changjiang Scholars and Innovative Research Team in University (PCSIRT) [IRT1059]
- Hebei Provincial Key Lab of Green Chemical Technology & High Efficient Energy Saving, School of Chemical Engineering & Technology, Hebei University of Technology
Co3O4 nanorods are prepared by a facile calcinations of the Co-composites, which is synthesized with the precursors of CoCl2, 1,3,5-Benzenetri carboxylic acid (H3BTC) and phenanthroline (PHEN). The Co-composites nonorods are about 1 urn long and 50 nm wide. After calcinations, the Co3O4 nanorods are composed of nanoparticles of 20-40 nm in queue and possesses a surface area of 23 m(2) g(-1) owning to the release of the organic molecules. The electrochemical properties are examined by cyclic voltammetry, electrochemical impedance spectroscopy and cyclic charge-discharge tests. The results show that the Co3O4 have the highest specific capacity of 262 F g(-1) at 5 mV s(-1) in the range of 0.2-0.7 V (vs. Ag/AgCl) and have a good cycle life with nearly no decrease after 500 cycles at 50 mV s(-1). The asymmetrical Co3O4//AC button cell is also tested by two-electrode system with a large potential testing window of 1.5 V and the results show the high energy density with a value of 42.81 Wh kg(-1) at the discharge current of 1.5 Ag-1. (C) 2015 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据