A5009081523- Supercapacitor Materials and Fabrication
- Porphyrin and Phthalocyanine Chemistry
- Supramolecular Chemistry and Complexes
- Conducting polymers and applications
- Advanced battery technologies research
- Advancements in Battery Materials
- Graphene research and applications
- Surface Chemistry and Catalysis
- Ionic liquids properties and applications
- Luminescence and Fluorescent Materials
- Crystallization and Solubility Studies
- Nanomaterials for catalytic reactions
- Molecular Sensors and Ion Detection
- Electrochemical sensors and biosensors
- X-ray Diffraction in Crystallography
- Porphyrin Metabolism and Disorders
- Electrohydrodynamics and Fluid Dynamics
- Electrocatalysts for Energy Conversion
- Inorganic Chemistry and Materials
- Hydrogen Storage and Materials
- Electrospun Nanofibers in Biomedical Applications
- Molecular Junctions and Nanostructures
- Magnetism in coordination complexes
- Analytical Chemistry and Sensors
- CO2 Reduction Techniques and Catalysts
Thales (France)
2015-2022
Thales (Australia)
2015-2020
Centre National de la Recherche Scientifique
2006-2014
Institut des Matériaux Jean Rouxel
2012-2014
Nantes Université
2014
Université du Québec à Montréal
2010-2013
Institut de Chimie
2005-2008
École Polytechnique Fédérale de Lausanne
2006
Laboratoire de Chimie
2005
Institute of Solution Chemistry
2005
Activated carbon (Black Pearls 2000) modified with electroactive catechol groups was evaluated for charge storage application as active composite electrode material in an aqueous electrochemical capacitor. High surface area Black 2000 functionalized by introduction of spontaneous reduction diazonium ions situ prepared solution from the corresponding amine. Change specific and pore texture following grafting monitored nitrogen gas adsorption measurements. The properties chemical composition...
Here we report on technology developments implemented into the Graphene Flagship European project for integration of graphene and graphene-related materials (GRMs) energy application devices. Many technologies investigated so far aim at producing composite associating or GRMs with either metal semiconducting nanocrystals other carbon nanostructures (e.g., CNT, graphite). These composites can be used favourably as hydrogen storage solar cell absorbers. They also provide better performing...
Abstract The bulky structure of current power sources is hindering the widespread development next‐generation electronics. Here, we propose a graphene/single wall carbon nanotube (SWCNT) hybrid for realization high‐performance supercapacitors. devices are assembled by using 2 cm area graphene/SWCNT electrodes, designed combining scalable solution‐processing method (e.g., liquid phase exfoliation pristine graphite and de‐bundling SWCNTs) with dynamic spray‐gun deposition, an aqueous...
Black Pearls (BP) carbon powder was chemically modified with chloroanthraquinone groups by spontaneous reduction of 1-amino, 5-chloroanthraquinone the aim determining quinone content carbon. This information is essential to determine increase capacitance associated grafted molecules. The pristine electrode doubled due presence electroactive BP characterized thermogravimetric and elemental analyses. also used fabricate composite electrodes that were electrochemistry loading chlorine atom on...
A carbon nanotube/molybdenum trioxide hybrid material has been developed in this contribution as a negative electrode for pseudocapacitors. Molybdenum oxide was obtained by cathodic electrodeposition directly on binder-free nanotube mats, followed annealing of the at 350 °C under air. The resulting pseudocapacitive characterized scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), diffraction (XRD), Raman spectroscopy, and electrochemistry. effect heat treatment...
A new type of very compact Pacman bis-porphyrin scaffold has been obtained in which a calix[4]arene spacer provides both cofacial preorganization and flexibility. Changes the distance between two tetrapyrrolic macrocycles can be triggered by electrochemistry, where closed open conformers interconverted handclapping motion.
Based on the efficient combination of calixarene spacers and acetylenic porphyrin derivatives, a new generation cofacial bis-porphyrins has been synthesized. The first crystal structure bis-porphyrin-calixarene conjugate is reported. Their unique architectural features, analogous to those pac-man-type bis-porphyrins, allow these calixarene-porphyrin conjugates adapt their shape size bidentate guests, such as diazabicyclo[2.2.2]octane (dabco) 1,4-pyrazine. predefined, arrangement moieties...
Flexible "pacman" scaffolds built upon a calix[4]arene platform bearing [18]crown-6 ether and either two OH functions or OPr groups at the lower rim have been used to generate donor-acceptor (D-A) dyads incorporating zinc-porphyrin donor free-base porphyrin acceptor. Through-space singlet energy transfer (SET) in D-A was studied by time-resolved fluorescence spectroscopy. Although effects of conformational changes are well documented when chromophores switch from non-cofacial cofacial...
[structure: see text] The synthesis of a Pacman heterobisporphyrin associating an octaethyl porphyrinatozinc (ZnOEP) energy donor and triaryl (ZntPP) acceptor around calix[4]arene spacer is described. Contrary to previous symmetrical architectures, correlations between the chromophores in unsymmetrical calixarene bisporphyrin scaffold can now be observed ROESY experiments. Independent excitation wavelength, only luminescence ZntPP moiety was corresponding quenching OEP moiety's emission.
this contribution deals with the fabrication of graphene based supercapacitors using an original deposition technique on dynamic spray-gun method. The essential advantage is very high potential to be easily implemented for large surface fabrication. We fabricated electrodes mixture oxide (GO) and carbon nanotubes (CNTs). With these composites, we want achieve a good mesoporous distribution (pore size between 2 50 nm) CNTs as spacers flakes. results demonstrate that composite 90% GO 10% CNTs,...
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Thermal, physicochemical and electrochemical properties of three different commercial ionic liquids N-Propyl-N-methylpyrrolidinium bis(fluorosulfonyl)imide (Pyr 13 FSI) , 1-Butyl-1-methylpyrrolidinium bis(trifluoromethanesulfonyl)imide 14 TFSI) 1-Ethyl-3-methylimidazolium (EMITFSI) were investigated compared with those binary mixtures these gamma-butyrolactone over [223K; 373K]. It was found that the conductivity depends on their composition, highest values obtained for a proportion close to...