Abstract
Resorcinol and formaldehyde were used as carbon precursors, poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) triblock copolymer was employed as a soft template, and tetraethylorthosilicate-generated silica was used as hard templates to synthesize spherical mesoporous carbon. The resulting spherical mesoporous carbons were characterized by nitrogen adsorption–desorption isotherms and electron microscopy (SEM and TEM) and used as electrode materials for aqueous electric double-layer capacitors. The average diameters of spherical particles ranged from 2 to 7 μm and the mesopore was ca 2 nm. The highest specific surface area of 1,000 m2/g and mesopore volume of 0.86 cm3/g was obtained. The specific capacitance of 130 F/g was obtained by means of galvanostatic charging/discharging and cycle voltammetry.
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Acknowledgments
The authors gratefully acknowledge the support of this research by National Natural Science Foundation of China (Grant No. 50872153), National Basic Research Program of China (Grant Nos. 2009CB226101, 2010CB234601, 2011CB201403) and Shanxi Province Natural Science Foundation (No. 2011011023-1).
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Chen, S., Shen, W. & Zhang, S. Synthesis of spherical mesoporous carbon for electric double-layer capacitors. J Sol-Gel Sci Technol 60, 131–136 (2011). https://doi.org/10.1007/s10971-011-2567-8
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DOI: https://doi.org/10.1007/s10971-011-2567-8