HAL will be down for maintenance from Friday, June 10 at 4pm through Monday, June 13 at 9am. More information
Skip to Main content Skip to Navigation
Journal articles

Ordered mesoporous carbons obtained by soft-templating of tannin in mild conditions

Abstract : Herein, we show that soft-templating synthesis of biosourced OMCs under rather mild pH conditions is possible by controlling the reaction temperature, without using either formaldehyde or toxic phenolic reagents. Removal of the surfactant at 400 °C and subsequent carbonisation at 900 °C allows reducing the shrinkage and preserving the material mesoporosity. Self-assembly of mimosa tannin with Pluronic® F127 in mild conditions (30 °C, pH 3) leads to hierarchical OMCs with more developed porosities, more ordered mesostructures and higher nanotexture ordering than in the more acidic conditions that are commonly used in soft-templating of OMCs. Further development of the OMC porosity by physical activation with CO2 increased the micropore volume by ∼60% without significantly affecting the structural ordering. However, it decreased the mesopore volume and the oxygen content and the PSD was slightly widened in the mesopore range. The activated OMC exhibited high gravimetric capacitances of 286 F g−1 (determined by cyclic voltammetry), a high capacitance retention of 50% at 12 A g−1 (determined by galvanostatic charge-discharge), high energy and power densities of 5.41 W kg−1 and 5.03 kW kg−1, respectively, and a faster frequency response, 4.39 s, than the non-activated OMC, making it a more appropriate material for practical supercapacitors.
Document type :
Journal articles
Complete list of metadata

Contributor : Maria Vanessa Fierro Pastor Connect in order to contact the contributor
Submitted on : Wednesday, February 9, 2022 - 10:59:26 AM
Last modification on : Wednesday, March 9, 2022 - 8:17:22 AM
Long-term archiving on: : Tuesday, May 10, 2022 - 6:31:31 PM


Soft-templating tannins-MicMes...
Files produced by the author(s)




Angela Sanchez-Sanchez, Maria Teresa Izquierdo, Ghouti Medjahdi, Jaafar Ghanbaja, Alain Celzard, et al.. Ordered mesoporous carbons obtained by soft-templating of tannin in mild conditions. Microporous and Mesoporous Materials, Elsevier, 2018, 270, pp.127-139. ⟨10.1016/j.micromeso.2018.05.017⟩. ⟨hal-03562699⟩



Record views


Files downloads