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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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Schubert, Thomas
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Publications (7/7 displayed)
- 2024Collagen molecular organization preservation in human fascia lata and periosteum after tissue engineeringcitations
- 2023Ballistic limit and damage assessment of hybrid fibre-reinforced cementitious thin composite plates under impact loadingcitations
- 2019Hard Metal Production by ERS: Processing Parameter Roles in Final Properties
- 2018The influence of trace elements (In, Sn) on the hardening process of Al-Cu alloyscitations
- 2015An innovative 3-D nanoforest heterostructure made of polypyrrole coated silicon nanotrees for new high performance hybrid micro-supercapacitorscitations
- 2015Efficient processing of metal-matrix-composites by combining direct pressure sintering and subsequent thixoforgingcitations
- 2007The dielectric response of room-temperature ionic liquids: Effect of cation variationcitations
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article
An innovative 3-D nanoforest heterostructure made of polypyrrole coated silicon nanotrees for new high performance hybrid micro-supercapacitors
Abstract
In this work, an innovative 3-D symmetric micro-supercapacitor based on polypyrrole (PPy) coated silicon nanotree (SiNTr) hybrid electrodes has been fabricated. First, SiNTrs were grown on silicon substrates by chemical vapor deposition (CVD) and then via an electrochemical method, the conducting polymer coating was deposited onto the surface of SiNTr electrodes. This study illustrates the excellent electrochemical performance of a hybrid micro-supercapacitor device using the synergistic combination of both PPy as the electroactive pseudo-capacitive material and branched SiNWs as the electric double layer capacitive material in the presence of an aprotic ionic liquid (N-methyl-N-propylpyrrolidinium bis(trifluoromethylsulfonyl)imide; PYR<inf>13</inf>TFSI) as the electrolyte. The hybrid device exhibited a specific capacitance as high as ∼14 mF cm-2 and an energy density value of ∼15 mJ cm-2 at a wide cell voltage of 1.5 V using a high current density of 1 mA cm-2. Furthermore, a remarkable cycling stability after thousands of galvanostatic charge-discharge cycles with a loss of approximately 30% was obtained. The results reported in this investigation demonstrated that PPy coated SiNTr-based micro-supercapacitors exhibit the best performances among hybrid micro-supercapacitors made of silicon nanowire electrodes grown by CVD in terms of specific capacitance and energy density.