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Dissertation
Synthèse et mise en forme de LiMn2O4 comme matériau pour cathode flexible
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Year: 2016 Publisher: Liège Université de Liège (ULiège)

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Abstract

Le sujet de ce mémoire porte sur la synthèse d'un composé pour cathode d'accumulateurs au lithium, le LiMn2O4, dopé adéquatement, et sa mise en forme de film flexible. Un grand nombre de dopants déjà utilisés sont comparés afin d'étudier leur influence sur la capacité et la stabilité du composé, en fonction de leur valence et de la force des liaisons qu'ils forment avec l'oxygène. Un dopant potentiellement prometteur est donc choisi sur cette base.
Des poudres de précurseurs sont préparées par atomisation et calcinées afin d'obtenir le composé LiMn2O4 dopé. Ces poudres sont ensuite broyées afin d'en faire des suspensions stables, auxquelles sont ajoutés une matrice polymère, du noir de carbone, pour rendre le film conducteur, et un plastifiant afin d'assurer la flexibilité des films. Ces suspensions sont déposées par coulage en bande et permettent après séchage de récupérer un film flexible.
Des mesures électrochimiques sur ces poudres dopées et ces films montrent que le dopant choisi apporte en effet une amélioration de la tenue au cyclage du composé et que les films se comportent bien, même après de hautes vitesses de cyclage ; ils peuvent donc être utilisées comme cathodes flexibles pour accumulateurs au lithium.


Book
Innovative Advanced Materials for Energy Storage and Beyond : Synthesis, Characterization and Applications
Author:
Year: 2020 Publisher: Basel, Switzerland MDPI - Multidisciplinary Digital Publishing Institute

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Abstract

This highly informative and carefully presented book covers the most recent advances as well as comprehensive reviews addressing novel and state-of-the-art topics from active researchers in innovative advanced materials and hybrid materials, concerning not only their synthesis, preparation, and characterization but especially focusing on the applications of such materials with outstanding performance.

Keywords

Technology: general issues --- non-isothermal crystallisation kinetics --- multi-modal polymer --- graphene-based polymer nanocomposite --- carbon black fillers. --- Li4Ti5O12 --- magnesium batteries --- cathodes --- MgCl2 --- garnet --- dual substitution --- spark plasma sintering --- conductivity --- activated carbon --- steam activation --- low-density polyethylene --- electric double layer capacitor --- solid fluoride electrolytes --- ceramics --- LaF3 --- fluorine-ion batteries --- metal current collectors --- electrochemical stability --- cyclic voltammetry --- copper-manganese alloy --- energy storage --- supercapacitor --- graphitic carbon nitride --- TiO2 nanotube --- MoS2 --- Al2O3 --- atomic layer deposition --- Li-ion microbatteries --- nano-catalyst --- noble metals --- TUD-1 --- mesoporous silica --- CO-oxidation --- air purification --- W2C --- WS2 --- hydrothermal --- nanoflowers --- lithium-ion batteries --- CdTe --- nanocrystal --- solar cells --- Spiro --- biomass carbon electrodes --- battery and supercapacitors --- structure-performance relationship --- Lithium-ion batteries --- LiMn2O4 nanoparticles --- Mg-doped --- kinetic and thermodynamic --- thermogravimetric analysis --- Pechini-type sol-gel process --- non-isothermal crystallisation kinetics --- multi-modal polymer --- graphene-based polymer nanocomposite --- carbon black fillers. --- Li4Ti5O12 --- magnesium batteries --- cathodes --- MgCl2 --- garnet --- dual substitution --- spark plasma sintering --- conductivity --- activated carbon --- steam activation --- low-density polyethylene --- electric double layer capacitor --- solid fluoride electrolytes --- ceramics --- LaF3 --- fluorine-ion batteries --- metal current collectors --- electrochemical stability --- cyclic voltammetry --- copper-manganese alloy --- energy storage --- supercapacitor --- graphitic carbon nitride --- TiO2 nanotube --- MoS2 --- Al2O3 --- atomic layer deposition --- Li-ion microbatteries --- nano-catalyst --- noble metals --- TUD-1 --- mesoporous silica --- CO-oxidation --- air purification --- W2C --- WS2 --- hydrothermal --- nanoflowers --- lithium-ion batteries --- CdTe --- nanocrystal --- solar cells --- Spiro --- biomass carbon electrodes --- battery and supercapacitors --- structure-performance relationship --- Lithium-ion batteries --- LiMn2O4 nanoparticles --- Mg-doped --- kinetic and thermodynamic --- thermogravimetric analysis --- Pechini-type sol-gel process


Book
Innovative Advanced Materials for Energy Storage and Beyond : Synthesis, Characterization and Applications
Author:
Year: 2020 Publisher: Basel, Switzerland MDPI - Multidisciplinary Digital Publishing Institute

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Export citation

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Bookmark

Abstract

This highly informative and carefully presented book covers the most recent advances as well as comprehensive reviews addressing novel and state-of-the-art topics from active researchers in innovative advanced materials and hybrid materials, concerning not only their synthesis, preparation, and characterization but especially focusing on the applications of such materials with outstanding performance.


Book
Innovative Advanced Materials for Energy Storage and Beyond : Synthesis, Characterization and Applications
Author:
Year: 2020 Publisher: Basel, Switzerland MDPI - Multidisciplinary Digital Publishing Institute

Loading...
Export citation

Choose an application

Bookmark

Abstract

This highly informative and carefully presented book covers the most recent advances as well as comprehensive reviews addressing novel and state-of-the-art topics from active researchers in innovative advanced materials and hybrid materials, concerning not only their synthesis, preparation, and characterization but especially focusing on the applications of such materials with outstanding performance.

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