期刊
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
卷 159, 期 10, 页码 A1702-A1709出版社
ELECTROCHEMICAL SOC INC
DOI: 10.1149/2.058210jes
关键词
-
资金
- Chinese Academy of Sciences
- National Nature Science Foundations of China [51005225]
- Youth Science Foundations of Gansu Province [1107RJYA274]
In this work, a three-dimensional (3D) graphene/polyaniline (GNS/PANi) composite hydrogel was prepared via a self-assembled method followed by in situ polymerization of aniline. The chemical structure of the materials was characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and Raman. The PANi nanofibers homogeneously distribute on the surfaces of the GNSs or among the GNSs, forming a light-weight and 3D composite hydrogel. Due to the reinforcing effects coming from PANi, the capacitive performance of pure GNS hydrogel is significantly improved after adding PANi. The GNS/PANi composite hydrogel exhibits the largest specific capacitance of 334 F g(-1), which is about 150% higher than that of pure GNS hydrogel. In addition, the electrochemical properties of the samples are further studied at the high and low operating temperatures (60 and -5 degrees C). Due to the thermal-instability of PANi, the specific capacitance and the cycle-stability of the GNS/PANi composite hydrogel show strong dependent on the operating temperature, especially at high temperature. Therefore, based on the above investigations, such GNS/PANi composite hydrogel would be a potential candidate for high-performance capacitor electrodes using at warm environment. (C) 2012 The Electrochemical Society. [DOI: 10.1149/2.058210jes] 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