Article
Manganese Dioxide Supported on Porous Biomorphic Carbons as Hybrid Materials for Energy Storage Devices
Author/s | Gutiérrez Pardo, Antonio Anselmo
Lacroix, Bertrand Martínez Fernández, Julián Ramírez Rico, Joaquín |
Department | Universidad de Sevilla. Departamento de Física de la Materia Condensada |
Publication Date | 2016-10 |
Deposit Date | 2024-09-23 |
Published in |
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Abstract | A facile and low-cost method has been employed to fabricate MnO2/C hybrid materials for use as binder-free electrodes for supercapacitor applications. Biocarbon monoliths were obtained through pyrolysis of beech wood, ... A facile and low-cost method has been employed to fabricate MnO2/C hybrid materials for use as binder-free electrodes for supercapacitor applications. Biocarbon monoliths were obtained through pyrolysis of beech wood, replicating the microstructure of the cellulosic precursor, and serve as 3D porous and conductive scaffolds for the direct growth of MnO2 nanosheets by a solution method. Evaluation of the experimental results indicates that a homogeneous and uniform composite material made of a carbon matrix exhibiting ordered hierarchical porosity and MnO2 nanosheets with a layered nanocrystalline structure is obtained. The tuning of the MnO2 content and crystallite size via the concentration of KMnO4 used as impregnation solution allows to obtain composites that exhibit enhanced electrochemical behavior, achieving a capacitance of 592 F g–1 in electrodes containing 3 wt % MnO2 with an excellent cyclic stability. The electrode materials were characterized before and after electrochemical testing. |
Funding agencies | Junta de Andalucía Ministerio de Economía y Competitividad (MINECO). España |
Project ID. | PE2012-TEP862
MAT2013-41233-R |
Citation | Gutiérrez Pardo, A.A., Lacroix, B., Martínez Fernández, J. y Ramírez Rico, J. (2016). Manganese Dioxide Supported on Porous Biomorphic Carbons as Hybrid Materials for Energy Storage Devices. ACS Applied Materials & Interfaces, 8 (45), 30890-30898. https://doi.org/10.1021/acsami.6b09361. |
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10.1021acsami.6b09361.pdf | 2.126Mb | [PDF] | View/ | Versión aceptada |
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