Three-dimensional porous graphene/polyaniline composites for high-rate electrochemical capacitors
Three-dimensional porous graphene/polyaniline composites for high-rate electrochemical capacitors
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用于高倍率电化学电容器的三维多孔石墨烯/聚苯胺复合材料
DOI:
10.1039/c4ta03639e
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发表时间:
2014-09
影响因子:
11.9
通讯作者:
Gaoquan Shi
中科院分区:
文献类型:
--
作者:
Yingru Li;Liang Huang;Chun Li;Gaoquan Shi
We report an electrochemical co-deposition method to prepare three-dimensional (3D) porous composites of reduced graphene oxide (rGO) and polyaniline (PANI) with pores vertically oriented on the surfaces of current collectors and used as an electrode material for electrochemical capacitors (ECs). These composites showed much higher areal specific capacitances and greatly improved rate capability than those of PANI. Typically, the rGO/PANI composite film with a thickness of 150 μm exhibited a high areal specific capacitance (Ca, 67.2 mF cm−2), small relaxation time constant (τ0, 316 ms) and good electrochemical stability, promising for the fabrication of a high-rate EC.
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