| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Rezaei, Babak
Technical University of Denmark
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (10/10 displayed)
- 2024In-situ mineralization of biomass-derived hydrogels boosts capacitive electrochemical energy storage in free-standing 3D carbon aerogelscitations
- 2024In-situ mineralization of biomass-derived hydrogels boosts capacitive electrochemical energy storage in free-standing 3D carbon aerogelscitations
- 2024Tracing the graphitization of polymers:A novel approach for direct atomic-scale visualizationcitations
- 2022Stereolithography-Derived Three-Dimensional Pyrolytic Carbon/Mn3O4 Nanostructures for Free-Standing Hybrid Supercapacitor Electrodescitations
- 2022Selective Passivation of Three-Dimensional Carbon Microelectrodes by Polydopamine Electrodeposition and Local Laser Ablationcitations
- 2022Selective Passivation of Three-Dimensional Carbon Microelectrodes by Polydopamine Electrodeposition and Local Laser Ablationcitations
- 2022Stereolithography-Derived Three-Dimensional Pyrolytic Carbon/Mn 3 O 4 Nanostructures for Free-Standing Hybrid Supercapacitor Electrodescitations
- 2020Highly structured 3D pyrolytic carbon electrodes derived from additive manufacturing technologycitations
- 2018Electrochemical performance of nanofibrous highly flexible electrodes enhanced by different structural configurationscitations
- 2018An electrochemical immunosensor for cardiac Troponin I using electrospun carboxylated multi-walled carbon nanotube-whiskered nanofibrescitations
Places of action
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article
In-situ mineralization of biomass-derived hydrogels boosts capacitive electrochemical energy storage in free-standing 3D carbon aerogels
Abstract
Here, a novel fabrication method for making free-standing 3D hierarchical porous carbon aerogels from molecularly engineered biomass-derived hydrogels is presented. In-situ formed flower-like CaCO<sub>3</sub> molecularly embedded within the hydrogel network regulated the pore structure during in-situ mineralization assisted one-step activation graphitization (iMAG), while the intrinsic structural integrity of the carbon aerogels was maintained. The homogenously distributed minerals simultaneously acted as a hard-template, activating agent and graphitization catalyst. The decomposition of the homogenously distributed CaCO<sub>3</sub> during iMAG followed by etching of residual CaO through a mild acid washing endowed a robust carbon aerogel with high porosity and excellent electrochemical performance. At 0.5 mA cm<sup>-2</sup>, the gravimetric capacitance increased from 0.01 F g<sup>-1</sup> without mineralization to 322 F g<sup>-1</sup> with iMAG, which exceeds values reported for any other free-standing or powder-based biomass-derived carbon electrodes. An outstanding cycling stability of ~104% after 1000 cycles in 1M HClO4 was demonstrated. The assembled symmetric supercapacitor device delivered a high specific capacitance of 376 F g<sup>-1</sup> and a high energy density of 26 W h kg<sup>−1</sup> at a power density of 4000 W kg<sup>−1</sup>, with excellent cycling performance (98.5% retention after 2000 cycles). In combination with the proposed 3D printed mold assisted solution casting (3DMASC), iMAG allows for the generation of free-standing carbon aerogel architectures with arbitrary shapes. Furthermore, the novel method introduces flexibility in constructing free-standing carbon aerogels from any ionically cross-linkable biopolymer while maintaining the ability to tailor design, dimensions and pore size distribution for specific energy storage applications.