期刊
ELECTROCHIMICA ACTA
卷 201, 期 -, 页码 96-105出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2016.03.196
关键词
environmental pollutant; methylene blue; activated carbons; supercapacitors
资金
- National Natural Science Foundation of China [U1303191, 21403295]
- Western Light Foundation of Chinese Academy of Sciences [XBBS201320]
- National Key Technology Research and Development Program of the Ministry of Science and Technology of China [2015BAD14B06]
In this research, Methylene blue (MB), a type of environmental pollutants (dye), was initially adopted as a carbonaceous precursor to synthesize activated carbons (ACs) with the activation of ZnCl2 at high temperatures. Varieties of techniques have been used to characterize the MB-derived ACs. The pore structures and surface functional groups were fully studied by N-2 adsorption-desorption analysis, XPS, IR, SEM and TEM, respectively. The MB-derived ACs have as large specific surface area as up to 2151.92 m(2)g(-1) and the pore size distribution concentrates on 2-5 nm. Moreover, electrochemical techniques such as cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and galvanostatic charge/discharge (GCD) were employed to assess AC's capacitive behavior and rate performance. It demonstrated that MB-derived ACs possessed as high specific capacitance as 265 Fg(-1) at a scan rate of 5 mV s(-1) in 1 M H2SO4. In addition, the MB-derived ACs exhibited long-term cycling stability and more than 90% original capacity have been maintained after first 1000 cycles (the total cycles of 10000 were carried out.) at a high current density of 1 Ag-1. (C) 2016 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