Matthieu Becuwe

• Professor
• Professor (Full) at University of Picardie Jules Verne

With the aim to meet the greatest challenge facing organic batteries, namely the low conductivity of the electrodes, the electrochemical properties of a series of substituted perylene diimides able to form semi‐conductive columnar material are investigated. Depending on the substituent group, a strong influence of this group on the reversibility, r...

A Li6PS5Cl-rich composite is prepared using a PEG-borate ester solid-state polymer electrolyte (BSPE). BSPE is a highly accessible compound with high ionic conductivity and excellent electrochemical stability against Li metal. Thereby, the stability of the Li6PS5Cl-rich composite with BSPE improved significantly.

The impressive growth in demand for energy storage systems and the constraints it might bring on the availability of raw materials has promoted research into new battery technologies alongside the dominant lithium ion technology[1,2]. In the last years, organic-based materials have gained attention as promising candidates to replace inorganics: the...

Herein the design, synthesis and electrochemical characterization of a new set of insoluble molecular carbazole derivatives for electrochemical energy storage is proposed. Two strategies, based on the incorporation of an insoluble fragment or dimerization, were carried out to avoid the dissolution of the active material in the organic carbonate‐bas...

The present paper aims at providing a fundamental insight into the interaction between a lithium salt and an inorganic filler in a perspective of lithium mobility. Through a synergistic approach, coupling experimental results and molecular dynamics simulations, the influence of the surface chemical state of the nanosilica Stöber-type on the dissoci...

For the first time, chemical surface modification, using an hybrid organic/inorganic approach and its impact on the electrochemical response of a nanometric lithium iron phosphate obtained by the facile solvothermal method using an organic capping agent is investigated. Removal of the capping agent was realized through different approaches, such as...

Lithium‐ion batteries (LIBs) have triggered the transition from internal combustion engine cars to electric vehicles, and are also making inroads into the grid storage sector, but the future quantity of batteries necessary poses several challenges in terms of raw material availability and sustainability. For this reason, many alternative chemistrie...

In the critical area of sustainable energy storage, organic batteries are gaining momentum as strong candidates thanks to their lower environmental footprint and great structural versatility. A plethora of organic materials have been proposed and evaluated as both positive and negative electrode materials. Whereas positive electrode chemistries hav...

This paper describes the simple, highly reproducible, and robust synthesis of a new solid organic/inorganic electrolyte based on the ionic liquid (IL) 1-butyl-3-(carboxyundecyl)imidazolium bis(trifluoromethylsulfonyl)imide tethered to zirconia nanoparticles (15-25 nm) by coordination and named ZrO2@IL. The IL monolayer formation, ensured by two-dim...

Using a combined theoretical and experimental approach, a mechanistic understanding of the interactions and pseudocapacitance of different quinone‐coupled viologen and pyridiniumium molecules sandwiched between titanium carbide (Ti3C2Tx) MXene layers has been provided. Three different derivatives of quinone‐coupled viologen and pyridiniumium are sy...

In this perspective article, we review some of the most recent advances in the emerging field of organic materials as the electroactive component in solid electrodes for batteries. These comprise, but are not limited to, organometallic salts, small molecular systems, redox-active macromolecules, as well as hybrid formulations with inorganic electro...

Contribution of organic molecular compounds to electrochemical energy storage Dr. Matthieu Becuwe Laboratoire de Réactivité et Chimie des Solides (LRCS), UMR CNRS 7314, Université de Picardie Jules Verne (UPJV), Amiens, 33 rue Saint-leu, 80039 Amiens, France Matthieu.becuwe@u-picardie.fr We are currently facing global climate change caused by the w...

Organic materials are emerging for the pseudocapacitors as they offer high theoretical redox capacitance and can be derived from the renewable sources. They are composed of non-metals, resulting in light weight, flexible, and potentially low-cost devices. While there are hundreds of commercial organic molecules available and nearly unlimited can be...

Herein, we report the synthesis of oleylamine capped CdS nanowires (NWs) and we have dispersed a small optimized amount of these NWs in the Colh phase of a recently synthesized phenazine-fused-triphenylene discotic liquid crystal (PFT DLC) to understand the temperature-dependent charge transport via time-of-flight technic. X-ray diffraction study r...

Direct deposition of hierarchal and porous nanomaterials on the substrate has a considerable interest in the development of supercapacitor electrodes due to its simple and low-cost process, the porous surface area improves the charge storage capability and the hierarchical structure capable for more electrolyte infiltration with better ion diffusio...

We report here a molecular phenothiazine-based electrode as a high capacitance and long cycle life (77% retention, 80,000 cycles) pseudocapacitive organic material after hydrothermal deposition on reduced graphene oxide (rGO). Given the high stability of phenothiazine coated rGO hybrid electrodes ([email protected]) under positive potentials, pseud...

In this article, we describe the design and gram‐scale synthesis of a new anthracene‐based negative electrode material for Li‐ion batteries. Based on rational design, featuring a strong electronic delocalization and a long conjugation length, this material has power performance to date unmatched for a conjugated lithium carboxylate, displaying a gr...

The increasing demand for rechargeable batteries induces the development of greener and better devices. Significant advances have been made in the last decade together with a renewed interest in organic electrode materials. Thus, stable electron‐donating organic materials are candidates for “greener” molecular batteries (metal‐free). Herein, we rep...

In situ proton reduction of the conjugated carboxylic acid into the battery affords enhancing the electrochemical reactivity versus lithium by comparison to the related chemically obtained di-lithium Li2-NDC salt. We demonstrate the possibility to reduce electrochemically the carboxylic acid function from which the dihydrogen gas formation contribu...

A new series of TEMPO catalysts supported on nanometric metal oxides (TiO2, AlO2, CeO2) and their efficiency for sugar oxidation are herein described. The preparation of such hybrid catalysts was carried out by modification of metal oxide surface with a monolayer of phosphonic linker bearing a TEMPO radical. All prepared catalysts were carefully ch...

Secondary batteries capable of efficiently storing and delivering a large amount of electrical energy are essential elements to sustain the constantly increasing development of nomad and mobility technologies. Among the different energy storage systems, the most energetic storage systems which have flood the market are ions batteries (mainly lithiu...

The first copper-catalyzed aziridination of olefins using re­cyclable magnetic nanoparticles is described. Magnetic nanoparticles were modified with dopamine and used as a support to coordinate copper. The methodology was optimized with styrene as olefin and using [N-(p-toluenesulfonyl)imino]phenyliodinane (PhI=NTs) as nitrene source. A microwave i...

A new series of supported organocatalysts, prepared by a simple method, were used for selective sugar oxidation. This approach is based on the immobilization of a nitroxide derivative through a carboxylic function on nanometric metal oxides (TiO2, Al2O3 and CeO2), allowing the recovery of the catalyst. These hybrid materials were carefully characte...

To meet the current market demands as well as the emerging environmental concerns there is a need to develop low polluting battery technologies. Organic electrode materials could offer the possibility of preparing electrode materials from naturally more abundant elements and eco-friendly processes coupled with a simplified recycling management. How...

The substituent effect on the redox potential of lithium terephthalate was studied using symmetrical dilithium disubstituted-terephthalates incorporating bromo, methoxy and amino groups. All the terephthalate derivatives have been synthesized and evaluated as anode material for lithium-ion batteries. The electrochemical results revealed an increase...

A fast and efficient methodology for the selective oxidation of sugars into corresponding sodium aldonates is herein reported. Hydrogen peroxide was used as a cheap oxidant and electron scavenger, in the presence of only 0.003-0.006 mol % of gold in basic conditions. Three photocatalysts were studied, namely Au/Al2O3, Au/TiO2 and Au/CeO2, the latte...

The preparation and assessment versus lithium of a functionalized terephthalate-based as a potential new negative electrode material for Li-ion battery is presented. Inspired from molecular modelling, a decrease in redox potential is achieved through the symmetrical adjunction of electron-donating fragments (–CH3) on the aromatic ring. While the el...

During the last twenty-five years Lithium Ion Batteries (LIBs) have expanded their landscape in large-scale applications and are now well positioned to achieve the Electrical Vehicle (EV) horizon, thus lessening our dependence towards fossil fuels. Among all possible negative electrode materials used in commercial LIBs, graphite is the most employe...

A 2D-layered conjugated organic lithium carboxylate based on 4,4’-biphenyl core has been synthesized and characterized by combining powder x-ray diffraction, two-dimensional solid-state 13C NMR and high-resolution transmission electron microscopy. The combination of these complementary technics are identifying both molecular packing and structural...

Electrochemically active organic materials are attractive solution for the energy storage devices due to their natural abundance, relatively low cost, structural diversity and sustainability. 1,2 Conducting polymers are well studied organic systems for the supercapacitors and batteries. 3,4 Although, they exhibit high initial capacitance, their str...

Redox-active organic materials have recently gained significant attention from small to large scale energy storage systems due to their natural abundance and sustainability. 1,2 However, they degrade upon moderate cycling mainly due to their poor conductivity, which limits their usage. One option to tackle this issue is to deposit organic materials...

Li-ion batteries (LIBs) meet nowadays some development bottlenecks because of the world high energy needs prompting the necessity of technology improvements particularly in terms of energy density of the inorganic cathode materials traditionally used. In addition to the environmental and safety concerns which become of primal importance. 1,2 Becaus...

Electrochemically active organic materials are emerging as low cost, naturally abundant and sustainable alternatives to their metal-based counterparts. However, their usage in energy storage systems is mainly hindered by their poor conductivity, which results in capacitance fade upon cycling. Here, we report a redox-active xerogel composed of 2,5-d...

Lithium-ion batteries (LIBs) represent one of the most successful battery chemistry with a range of applications starting from small portable electronic devices to advanced electric vehicles. The increasing demands concerning these large-scale applications have generated intense requirements of improved safety, low costs and of course high energy d...

An efficient microwave-assisted methodology for the oxidation of free carbohydrates to corresponding aldonates is described. Supported gold catalyst, hydrogen peroxide, and a mineral base were used to perform the oxidation reaction in water under microwave irradiation. These conditions combined with Au/Al2O3 catalyst allowed to reach in 10 min a qu...

Electrochemically active organic molecules are emerging materials for small- to large-scale energy storage applications due to their low cost, recyclability, safety, and low toxicity. 1,2 In addition, they are compatible with various conductive substrates and their electrochemical properties can be tuned using established organic chemistry principa...

a Laboratoire de Réactivité et Chimie des Solides (LRCS), Université de Picardie Jules Verne CNRS UMR7314, 80039 Amiens Cedex b Institut de Chimie de Picardie (ICP), Université de Picardie Jules Verne CNRS FR3085, 80039 Amiens Cedex c Réseau sur le Stockage Electrochimique de l’Energie (RS2E), FR CNRS 3459 The integration of organic-based electrode...

A new approach to enhance performances of a cyclodextrin-based fluorescent chemosensor combining grafting on a silica matrix and quaternization reaction is presented. The full characterization of new fluorescent hybrid material has clearly revealed the embedding of cyclodextrin inside the siliceous material. Finally, through a comparison with previ...

We present DFT investigations on the redox properties of quinone based precursors exhibiting growing interest from the electrochemists community due to their potential application as electrodes for new battery devices, with lower ecological footprint. A screening of various substituents is undertaken with the aim of providing guidelines to the expe...

A high-rate cycling lithium carboxylate-based organic anode material using perylen core as stabilization platform is described. The hyper-conjugated core unit of perylene associated with lithium carboxylate confers to the electrode an outstanding rate capability without any electrode formulation engineering, maintaining over 120 mAh.g-1 after one h...

The title compound, [Li 2 (C 12 H 6 O 4 )(H 2 O) 2 ] n , crystallizes with one half of the molecular entities in the asymmetric unit. The second half is gererated by inversion symmetry. The crystal structure has a layered arrangement built from distorted edge-sharing LiO 3 (OH) 2 tetrahedra parallel to (100), with naphthalenedicarboxylate bridging...

Dilithium 2,6-naphthalene di-carboxylate has been synthesized starting from the acid and lithium hydroxide using a freeze drying process which gives rise to superior electrochemical performances. This negative electrode material reacts reversibly with Li+ at a redox potential of ca. 0.88 V, and exhibits not only a total gravimetric of ca. 200 mAh.g...

The formation of a new hybrid material based on titanium dioxide as inorganic support and containing an iron organochelator (ICL670) is described. An organophosphorous coupling agent was used to graft the organic molecule on the oxide surface. The attachment of the organic substrate was well-confirmed by FTIR (DRIFT), solid-state 31 P and 13 C CPMA...

A new N-azacrown carbazole fluoroionophore 1 was synthesized by microwave path and its sensing behavior toward metal ions was investigated by spectroscopic methods. This new structure proved to be an excellent selective fluorescent probe toward Fe3+ in non-buffered aqueous solution without interference with the background metal ions (Li+, Na+, K+,...

The inclusion complex of Rhodamin B (Rh B) with (N-6-deoxy-ˇ-cyclodextrin-6-yl-1-aminocarbonyl)- 3-(4-fluorobenzoyl)-7-pyridin-4-yl indolizine [designated as compound (1)] is shown to be a potential pH sensor based on fluorescence resonance energy transfer (FRET). By steady state and time-resolved fluorimetry it has been established that (i) an exc...

A new N-azacrown carbazole fluoroionophore 1 was synthesised by microwave path and its sensing behavior toward metal ions was investigated by spectroscopic methods. This new structure proved to be an excellent selective fluorescent probe toward Fe3+ in non-buffered aqueous solution without interference with the background metal ions (Li+, Na+, K+,...

This article aims to present the synthesis and the characterization of a novel hybrid material, based on silica nanoparticles, and which can be used as a sensitive element for the electrochemical detection of iron (III). This material was obtained by grafting an iron ligand-based calix[4]arene structure onto nanosized silica particles. The covalent...

We present our recent investigation on the internal structure of hybrid materials based on pyrogenic chlorobenzylated silica obtained by classical heating and sonochemistry. A fluorescent labelling by the alkoxypyridylindolizine derivative was carried out by linking the chlorobenzyl pattern, of the native hybrid materials, by quaternization of the...

The development of selective electrochemical iron sensor is still a challenging task. One promising possibility is to use organically functionalized inorganic particles, for instance silica, as sensitive element. Herein, we report on the design and synthesis of calix[4]arene-based platforms modified with ICL670 iron chelator and alkylamino chain(s)...

By absorption and fluorescence (steady state and time-resolved) studies, three prototropic forms of (N-6-deoxy-β-cyclodextrin-6-yl-1-aminocarbonyl)-3-(4-fluorobenzoyl)-7-pyridine-4-yl indolizine, (1) have been established and shown to be a potential fluorescent pH sensor with switching action. Inclusion complexes of (1) with a number of quinones ha...

An efficient approach has been developed to synthesize a new versatile organo-silica material by non-conventional method (microwave irradiation and ultrasonic vibration) from amorphous pyrogenic silica and has been compared with thermic procedure. The samples were fully characterized by FTIR, solid-state (29)Si and (13)C CP/MAS NMR, thermogravimetr...

The photophysical properties of a pH dependent molecular switch based on pyridin-4-yl indolizin beta-cyclodextrin 1 in water are described. The reversibility phenomena of fluorescent emission is attributed to a molecular motion of enclosed fluorescent moiety to inside/outside location.

The potentialities of three new fluorescent indolizine modified β-cyclodextrin have been investigated as molecular chemosensors. The pyridin-4-ylindolizine β-cyclodextrin derivatives were synthesised by an amidation between the fluorescent indolizine derivatives and 6-deoxy-6-amino-β-cyclodextrin. The multiconformational search by MM3 and AM1 metho...

The synthesis of a new fluorescent sensor incorporating a fluoro pyridine indolizinic unit and a β-cyclodextrin fragment by two different synthetic ways is described.