Novel hybrid micro-supercapacitor based on conducting polymer coated silicon nanowires for electrochemical energy storage

Aradilla, David; Bidan, Gérard; Gentile, P.; Weathers, Patrick; Thissandier, Fleur; Ruíz, Vanesa; Gómez‐Romero, Pedro; Schubert, Thomas; Sahin, H.; Sadki, Saı̈d

doi:10.1039/c4ra03192j

Cited by 65 publications

(63 citation statements)

References 38 publications

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“…The results in Figure 4a demonstrate that the functionalization of SiNTrs exhibits better capacitive properties than functionalized SiNWs, evidencing the enhancement of the performance owing to their hyper-nanostructuration, which leads to higher active surface. 26 These values have been compared with the results presented in this investigation. 26 These values have been compared with the results presented in this investigation.…”

Section: Resultsmentioning

confidence: 96%

“…26 These values have been compared with the results presented in this investigation. Figure 4b describes the performance of hybrid microsupercapacitors based on silicon nanowires grown by CVD such as PEDOT/SiNWs, 26 Diamond/SiNWs, 17 SiC/SiNWs, 41 or Ni(OH) 2 /SiCNWs. Thus, the former showed a C (14 mF cm -2 ) and E density (15 mJ cm -2 ) values higher than the latter (C: 10 mF cm -2 and E: 11 mJ cm -2 ) at high current densities (e.g.…”

Section: Resultsmentioning

confidence: 96%

“…Accordingly, Figure 2f shows were detected, which are associated with the oxidation and reduction of polypyrrole. 26 The electrochemical properties of the hybrid device were also investigated using galvanostatic charge-discharge measurements. The corresponding chemical processes are described according to the following reactions: This electrochemical behavior has been reported recently in a previous work using 1butyl-1-methylpyrrolidinium bis(trifluoromethanesulfonyl)imide as electrolyte.…”

Section: Resultsmentioning

confidence: 99%

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An innovative 3-D nanoforest heterostructure made of polypyrrole coated silicon nanotrees for new high performance hybrid micro-supercapacitors

et al. 2015

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International audienceIn 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; PYR13TFSI) as the electrolyte. The hybrid device exhibited a specific capacitance as high as similar to 14 mF cm(-2) and an energy density value of similar to 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

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Section: Resultsmentioning

confidence: 96%

Section: Resultsmentioning

confidence: 96%

Section: Resultsmentioning

confidence: 99%

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An innovative 3-D nanoforest heterostructure made of polypyrrole coated silicon nanotrees for new high performance hybrid micro-supercapacitors

et al. 2015

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“…However, as a conventional electrode material, the hydrophobic nature of highly graphitized carbon is disadvantageous to the solution-phase ion infiltration, thus leading to inferior capacitance [9]. Pseudo-capacitors, such as transition metal oxides and conducting polymers, can provide superior specific capacitance (10 to 100 times higher than carbon materials) through the fast redox reactions at the electrolyte/electrode interface [4,10,11]. Conducting polymers are especially attractive candidates due to their excellent structural stability, reaction reversibility, and superior electrical conductivity [12].…”

Section: Introductionmentioning

confidence: 99%

Vapor-Phase Polymerized Poly(3,4-Ethylenedioxythiophene) on a Nickel Nanowire Array Film: Aqueous Symmetrical Pseudocapacitors with Superior Performance

Xie

Wang

et al. 2016

PLoS ONE

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Three-dimensional (3D) nanometal scaffolds have gained considerable attention recently because of their promising application in high-performance supercapacitors compared with plain metal foils. Here, a highly oriented nickel (Ni) nanowire array (NNA) film was prepared via a simple magnetic-field-driven aqueous solution deposition process and then used as the electrode scaffold for the vapor-phase polymerization of 3,4-ethylenedioxythiophene (EDOT). Benefiting from the unique 3D open porous structure of the NNA that provided a highly conductive and oriented backbone for facile electron transfer and fast ion diffusion, the as-obtained poly(3,4-ethylenedioxythiophene) (PEDOT) exhibited an ultra-long cycle life (95.7% retention of specific capacitance after 20 000 charge/discharge cycles at 5 A/g) and superior capacitive performance. Furthermore, two electrodes were fabricated into an aqueous symmetric supercapacitor, which delivered a high energy density (30.38 Wh/kg at 529.49 W/kg) and superior long-term cycle ability (13.8% loss of capacity after 20 000 cycles). Based on these results, the vapor-phase polymerization of EDOT on metal nanowire array current collectors has great potential for use in supercapacitors with enhanced performance.

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“…Additionally, the progression of core-shell nanostructures has been intensively investigated very recently with the intention to boost energy density and capacitive properties of SiNWs. Thus, NiO/SiNWs [10,11] and poly(3,4-ethylenedioxythiophene) (PEDOT)/SiNWs [12] were reported. In addition, a very important aspect which should be considered during the engineering of on-chip micro supercapacitors is the electrolyte.…”

Section: Introductionmentioning

confidence: 99%

Diamond-coated silicon nanowires for enhanced micro-supercapacitor with ionic liquids

Gund

Dubal

Aradilla

et al. 2015

2015 International Conference on Industrial Instrumentation and Control (ICIC)

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Silicon nanowires (SiNWs) and diamond-coated SiNWs (D@SiNWs) on highly n-doped silicon wafer substrates were prepared through standard chemical vapor deposition (CVD) method as electrodes for micro-supercapacitors. The surface of electrodes exhibited uniform distribution of SiNWs on silicon wafer and continuous diamond coating on SiNWs. Electrochemical measurements were carried out in order to test the combined effect of using Ionic Liquid electrolytes and diamond coating on SiNWs on energy storage performance. Optimal values of areal capacitance, energy density and power densities were 317 μF cm-2, 0.13 μWh cm-2 and 150 μW cm-2, respectively. So, the work reported here confirms the suitability and compatibility of D@SiNWs electrode materials and ionic liquid electrolytes for the fabrication of high-performing and robust micro-supercapacitors

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Novel hybrid micro-supercapacitor based on conducting polymer coated silicon nanowires for electrochemical energy storage

Abstract: The development of a novel hybrid symmetric micro-supercapacitor based on poly(3,4-ethylenedioxythiophene) coated silicon nanowires using an ionic liquid PYR13TFSI as an electrolyte has been demonstrated.

Cited by 65 publications

References 38 publications

An innovative 3-D nanoforest heterostructure made of polypyrrole coated silicon nanotrees for new high performance hybrid micro-supercapacitors

An innovative 3-D nanoforest heterostructure made of polypyrrole coated silicon nanotrees for new high performance hybrid micro-supercapacitors

Vapor-Phase Polymerized Poly(3,4-Ethylenedioxythiophene) on a Nickel Nanowire Array Film: Aqueous Symmetrical Pseudocapacitors with Superior Performance

Diamond-coated silicon nanowires for enhanced micro-supercapacitor with ionic liquids

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