Zhu, Shan and Taberna, Pierre-Louis
and Zhao, Naiqin and Simon, Patrice
Salt-template synthesis of mesoporous carbon monolith for ionogel-based supercapacitors.
(2018)
Electrochemistry Communications, 96. 6-10. ISSN 1388-2481
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(Document in English)
PDF (Author's version) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader 681kB |
Official URL: https://doi.org/10.1016/j.elecom.2018.09.003
Abstract
Mesoporous carbon monoliths (MCM) were prepared by using soluble salt as templates. During the synthesis, a freeze-drying process enables a surface coating of self-assembled Na2SiO3 salt particles with sucrose, which is further transformed into carbon by heat treatment. After removal of the salt templates by washing, MCM were obtained. MCM samples exhibit high specific surface area together with high mesoporous volume, whose pore sizes can be tuned from 10 to 30 nm by adjusting the ratio between salt and carbon sources. MCM materials were further used as electrodes in combination with ionogel electrolyte to assemble a solid-state supercapacitor. In this configuration, MCM electrodes show capacitance as high as 75 F g−1 and good rate performance thanks to the carbon monolith pore size selected.
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