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3D Graphene-Fe3O4-Polyaniline, a novel nano-composite for supercapacitor electrodes with improved electrochemical properties

yanzhengquan 添加于 2017/6/25 20:11:57  145次阅读 | 0次推荐 | 0个评论

To develop a promising electrode candidate for high-performance supercapacitors, a novel 3D ternary composite, graphene-Fe3O4-polyaniline (rGO/Fe3O4/PANI), was designed and developed via in-situ hydrothermal polymerization methods. After its structure and performances were characterized by powder X-ray diffraction, scanning electron microscope, high-resolution transmission electron microscopy, Fourier transform infrared spectroscopy, Raman spectroscopy, ultraviolet-visible absorption spectroscopy and Brunauer-Emmett-Teller (BET), the electrochemical enhanced mechanisms for supercapacitor electrodes were explored carefully. By virtue of the excellent synergistic effect among Fe3O4, PANI and rGO, the electrochemical properties of rGO/Fe3O4/PANI-based electrode for supercapacitor were improved greatly. The specific capacitance increased from 299.1 Fg−1 for PANI, to 371.1 Fg−1 for rGO/PANI and further to 486.5 Fg−1 for rGO/Fe3O4/PANI. Importantly, even after 2000 cycles, the retention ratio could still keep 52.1% for rGO/Fe3O4/PANI comparing with 38.9% for PANI.

作 者:Mebrahtu Melake Mezgebe, Zhengquan Yan*, Gang Wei, Shuishui Gong, Fayin zhang, Shanyi Guang*, Hongyao Xu*
期刊名称: Materials Today Energy
期卷页: 2017 第5卷 第期 164–172页
学科领域:工程材料 » 有机高分子材料 » 聚合物共混与复合材料
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原文链接:http://www.sciencedirect.com/science/article/pii/S2468606917300631
DOI: https://doi.org/10.1016/j.mtener.2017.06.007
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