Abstract
Partially graphitized ordered mesoporous carbons have been prepared with a soft template method using low-molecular-weight phenolic resol as a carbon source, triblock copolymer F127 as a template, and ferric citrate as a graphitization catalyst. N2 sorption and transmission electron microscopy analysis show that the ordered mesoporous carbons have been partially graphitized when the carbonization temperature is above 700 °C. The graphitic ordered mesoporous carbons exhibit better rate performance than amorphous ordered mesoporous carbons. The specific capacitance of the graphitic ordered mesoporous carbons (GOMCs) prepared at 700 °C reaches to 112 F g−1 at a scan rate of up to 1,000 mV s−1. Its capacitance retention ratio is 64 %, which is much higher than that of the amorphous ordered mesoporous carbons prepared at 600 °C (33 %). High electronic conductivity and ordered mesoporous structure lead to the high electrochemical performance of the partially graphitized ordered mesoporous carbons.
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Acknowledgments
This work was supported by the National Science Foundation of China (51177156/E0712) and the Project to Support Xinjiang with Science and Technology from Chinese Academy of Sciences (XBXJ-2011-041).
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Jiang, L., Yan, J., Xue, R. et al. Partially graphitized ordered mesoporous carbons for high-rate supercapacitors. J Solid State Electrochem 18, 2175–2182 (2014). https://doi.org/10.1007/s10008-014-2458-3
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DOI: https://doi.org/10.1007/s10008-014-2458-3