In-situ polymerization to prepare reduced graphene oxide/polyaniline composites for high performance supercapacitors

被引:27
作者
Wang, Zhaokun [1 ]
Jiang, Licong [1 ]
Wei, Yajie [1 ]
Zong, Chengzhong [1 ]
机构
[1] Qingdao Univ Sci & Technol, Shandong Prov Key Lab Rubber Plast, Key Lab Rubber Plast, Minist Educ, Qingdao 266042, Peoples R China
来源
JOURNAL OF ENERGY STORAGE | 2020年 / 32卷
关键词
Graphene; Supercapacitors; Polyaniline; Mannich reaction; LARGE-SCALE SYNTHESIS; POLYANILINE NANOFIBERS; ELECTRODE MATERIAL; GRAPHENE/POLYANILINE; FABRICATION; FOAM; NANOCOMPOSITES; NANOTUBES; ARRAY; FILM;
D O I
10.1016/j.est.2020.101742
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
It is well known that reduced graphene oxide/polyaniline (rGO/PANI) composites exhibit extremely excellent electrochemical performance. However, in the preparation of this composite, the toxic and harmful properties of the reducing agent and the re-stacking of rGO sheets have become an obstacle. To solve these problems, in this study, with green natural tea polyphenols (GTPs) was used as the reducing agent and stabilizer of graphene oxide (TrGO), through introduced amine groups into the surface of TrGO by Mannich reaction acted as anchors for in situ polymerization of polyaniline (PANI), we synthesized a high-electrochemical performance TrGO/PANI composites. Fourier Transform Infrared Spectrometer (FT-IR), X-ray diffraction, Raman spectra and electron microscope were used to characterize the morphology and structure of the composite, and the electrochemical performance of the composite were tested by cyclic voltammetry, galvanostatic charge-discharge and AC impedance spectroscopy. The results exhibited that the covalently grafted TrGO/PANI composites showed excellent electrochemical performance. The areal capacitance at 0.5 mA cm(-2) is 732 mF cm(-2), which is better than pristine graphene oxide and polyaniline. The excellent electrochemical performance of the composites can be attributed to the effect of covalent synergy between the TrGO and PANI, indicating the great potential for supercapacitors.
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页数:9
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