期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 322, 期 2, 页码 545-550出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2008.02.055
关键词
mesoporous MnO2; CCl4/H2O soft interface; template free; electrochemical capacitance
Mesoporous MnO2 has been synthesized by means of a novel, facile, and template-free method by virtue of a soft interface between CCl4 and H2O without any surfactants or organometallic precursors or ligands. X-ray diffraction spectroscopy, Fourier transform infrared spectroscopy analysis, scanning electron microscopy, and an ASAP2010 autoadsorption analyzer were applied to investigate the composition and microstructure of the as-synthesized MnO2. The structure characterizations indicated a good mesoporous structure for as-prepared MnO2 with an adsorption average pore diameter of 9.7 nm, mesoporous volume of 0.58 cm(3) g(-1), and Brunauer-Emmett-Teller specific surface area of 239 m(2) g(-1). Electrochemical properties of the mesoporous MnO2 were elucidated by cyclic voltammograms, galvanostatic charge-discharge, and electrochemical impedance spectroscopy in 1 M Na2SO4 electrolyte. Electrochemical data analysis demonstrated that as-synthesized MnO2 had good capacitive behavior due to its unique mesoporous structure. A specific capacitance of ca. 220 F g(-1) could still be delivered for the mesoporous MnO2 even at a scan rate of 100 mV s(-1). (C) 2008 Elsevier Inc. 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