High-performance self-assembled graphene hydrogels prepared by chemical reduction of graphene oxide
作者： Kai-xuan SHENG , Yu-xi XU , Chun LI , Gao-quan SHI
DOI: 10.1016/S1872-5805(11)60062-0
关键词: Electrochemistry 、 Oxide 、 X-ray photoelectron spectroscopy 、 Graphene 、 Nanotechnology 、 Supercapacitor 、 Graphene oxide paper 、 Raman spectroscopy 、 Materials science 、 Scanning electron microscope
摘要: Abstract Three-dimensional self-assembled graphene hydrogels (SGHs) have been fabricated by chemical reduction of oxide (GO) with sodium ascorbate. The SGHs were characterized scanning electron microscopy, rheological tests, electrical conductivity measurements, X-ray photoelectron spectroscopy, diffraction, and Raman spectroscopy. Results indicate that the GO promotes assembly sheets. are electrically conductive (1 S·m −1 ) mechanically strong exhibit excellent electrochemical performance. In 1 mol·L aqueous solution H 2 SO 4 , specific capacitance was measured to be about 240 F·g at a discharge current density 1.2 A·g .
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