聚苯胺
材料科学
纳米片
石墨烯
扫描电子显微镜
循环伏安法
复合数
拉曼光谱
成核
化学工程
微观结构
超级电容器
电容
聚合
复合材料
纳米技术
电化学
电极
化学
聚合物
有机化学
物理化学
工程类
物理
光学
作者
Jun Yan,Tong Wei,Bo Shao,Zhuangjun Fan,Weizhong Qian,Milin Zhang,Fei Wei
出处
期刊:Carbon
[Elsevier]
日期:2010-02-01
卷期号:48 (2): 487-493
被引量:1000
标识
DOI:10.1016/j.carbon.2009.09.066
摘要
A graphene nanosheet (GNS)/polyaniline (PANI) composite was synthesized using in situ polymerization. The morphology and microstructure of samples were examined by scanning electron microscopy (SEM), transition electron microscopy (TEM), X-ray diffraction (XRD) and Raman spectroscopy. Electrochemical properties were characterized by cyclic voltammetry (CV) and galvanostatic charge/discharge. GNS as a support material could provide more active sites for nucleation of PANI as well as excellent electron transfer path. The GNS was homogeneously coated on both surfaces with PANI nanoparticles (∼2 nm), and a high specific capacitance of 1046 F g−1 (based on GNS/PANI composite) was obtained at a scan rate of 1 mV s−1 compared to 115 F g−1 for pure PANI. In addition, the energy density of GNS/PANI composite could reach 39 W h kg−1 at a power density of 70 kW kg−1.
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