Monolithic electrode for electric double-layer capacitors based on macro/meso/microporous S-Containing activated carbon with high surface area

George Hasegawa, Mami Aoki, Kazuyoshi Kanamori, Kazuki Nakanishi, Teiichi Hanada, Kiyoharu Tadanaga
2011 Journal of Materials Chemistry  
Macro/meso/microporous carbon monoliths doped with sulfur have been prepared from sulfonated poly(divinylbenzene) networks followed by the activation with CO 2 resulted in the activated carbon monoliths with high surface area of 2400 m 2 g 1 . The monolithic electrode of the activated carbon shows remarkably high specific capacitance (175 F g 1 at 5 mV s 1 and 206 F g 1 at 0.5 A g 1 ). Increasing demands for the electrochemical devices, such as batteries, 1 fuel cells, 2 and electric
more » ... and electric double-layer 5 capacitors (EDLCs), 3-6 has triggered the development of porous carbon materials. The physical properties of carbon materials, including surface area, pore volume and pore size, must be controlled to be suitable for each application, because they are closely related to the electrochemical performance. A practical polarized electrode material for EDLCs is activated carbon with a high specific surface area 7-9 because EDLCs are based on electrostatic interactions, i.e. the electric charge is accumulated on an electric double-layer of the polarized electrode, and the electrodes with 10
doi:10.1039/c0jm03793a fatcat:s7ep5j7pyzbsfdg622s65y4cbq