All Solid-State Symmetrical Activated Carbon Electrochemical Double Layer Capacitors Designed with Ionogel Electrolyte

Brachet, Mylène; Brousse, Thierry; Bideau, Jean Le

doi:10.1149/2.0051411eel

Cited by 53 publications

(34 citation statements)

References 19 publications

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“…In this particular case, PPy was synthesized on Pt disks using the same electrolyte. 36 Figure 2e displays the variance of the areal specific capacitance versus current density where specific capacitance reached a plateau for current densities higher than 0.5 mA cm -2 . 31 In this way, the faradaic reactions observed in this study suggest that the specific capacitance of PPy-coated SiNTrs is mainly contributed to the pseudo-capacitive behaviour induced by the conducting polymer at the electrode/electrolyte surface.…”

Section: Resultsmentioning

confidence: 99%

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: 99%

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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“…Recent developments include ionogels or surface grafted poly-ionic liquids that enhance the retention of ionic liquids within a solid matrix to avoid possible leakage. [71][72][73][74] • Gel-polymer electrolytes. These are typically composed of a polymer matrix, solvent, and lithium salt.…”

Section: Conventional Cell Confi Gurations and Manufacturing Methodsmentioning

confidence: 99%

Design Considerations for Unconventional Electrochemical Energy Storage Architectures

Vlad

Singh

Galande

et al. 2015

Advanced Energy Materials

290

204

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all need to be used in conjugation with an energy storage system to provide smooth power leveling. Currently, electrochemical energy storage systems are by far the most optimal solutions for powering a broad range of technologies, expanding from compact and light-weighted portable electronic devices to stationary gridscale energy storage applications. [3][4][5][6] These energy storage devices (batteries and supercapacitors) store the available electrical energy in the form of chemical energy and release it whenever needed, by simply reversing the electrochemical reaction. [7][8][9][10][11] Among various available battery chemistries, lithium batteries and supercapacitors are the most promising technologies. [ 7,[9][10][11][12][13][14][15][16][17][18][19][20] Ever since the realization of the fi rst electrochemical energy storage cell by Alessandro Volta (end of 17th century), the working principle and its function has changed very little. [ 21,22 ] Basically, two redox couples (or charge storage electrodes), electrically and physically separated, are bridged by an ion conducting medium to constitute an electrochemical cell. This holds true also for modern Li-ion batteries, although the chemistry involved is much more complex. During operation, the electrons are transferred through an external circuit while ions shuttle through the electrolyte to counterbalance the depleted charge at the electrodes. [ 23 ] So far, much of the effort has been directed towards improvement of the energy and power characteristics by downsizing the active components, re-engineering the current collectors and separators, as well as fi ne-tuning the Batteries have become fundamental building blocks for the mobility of modern society. Continuous development of novel battery chemistries and electrode materials has nourished progress in building better batteries. Simultaneously, novel device form factors and designs with multi-functional components have been proposed, requiring batteries to not only integrate seamlessly to these devices, but to also be a multi-functional component for a multitude of applications. Thus, in the past decade, along with developments in the component materials, the focus has been shifting more and more towards novel fabrication processes, unconventional confi gurations, and additional functionalities. This work attempts to critically review the developments with respect to emerging electrochemical energy storage confi gurations, including, amongst others, paintable, transparent, fl exible, wire or cable shaped, ultra-thin and ultra-thick confi gurations, as well as hybrid energy storage-conversion, or graphene-incorporated batteries and supercapacitors. The performance requirements are elaborated together with the advantages, but also the limitations, with respect to established electrochemical energy storage technologies. Finally, challenges in developing novel materials with tailored properties that would allow such confi gurations, and in designing easier manufacturing techniques that can be widely adopted ar...

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“…However, the operating voltage is limited to less than 2 V because of the use of proton or proton-like conducting polymers [11]. More recently, ionogels, which are solid or quasi-solid electrolytes based on the trapping of room temperature ionic liquids (RTILs) in a silica matrix have been proposed [12][13][14] because they can reach high voltage, up to 4 V [15]. However, based on ionic liquid salt, the ionic conductivity at low temperature is still an issue for developing solid-state supercapacitors operating with a wide range of temperature.…”

Section: Introductionmentioning

confidence: 99%

Ionogel-based solid-state supercapacitor operating over a wide range of temperature

Nègre

Daffos

Turq

et al. 2016

Electrochimica Acta

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HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés. Ionogel A B S T R A C TAn inorganic gel polymer electrolyte based on the confinement of an ionic liquid mixture (1:1 by weight or molar ratio) of N-methyl-N-propylpiperidinium bis(fluorosulfonyl)imide (PIP13FSI) and N-butyl-Nmethylpyrrolidinium bis(fluorosulfonyl)imide (PYR14FSI) into a SiO 2 matrix prepared from a sol-gel method was prepared and further used as electrolyte in an all solid-state supercapacitor. The synthetized ionogel exhibits a high ionic conductivity over a wide temperature range (from 0.2 mS cm À1 at À40 C up to 10 mS cm À1 at 60 C). The ionogel-based supercapacitor using two activated carbon electrodes can be operated over 3 V cell voltage window. Moreover this all solid-supercapacitor shows a capacitance up to 90 F g À1 at room temperature. These encouraging results show the interest of developing such devices, including non-toxic and safer electrolytes, packaging issues and flexible devices development.

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All Solid-State Symmetrical Activated Carbon Electrochemical Double Layer Capacitors Designed with Ionogel Electrolyte

Cited by 53 publications

References 19 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

Design Considerations for Unconventional Electrochemical Energy Storage Architectures

Ionogel-based solid-state supercapacitor operating over a wide range of temperature

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