Bottom-up Synthesis of Nano-catalysts for Electrochemical Energy / Loukmane Morchedi  

Public ISBD Titre : Bottom-up Synthesis of Nano-catalysts for Electrochemical Energy Type de document : texte imprimé Auteurs : Loukmane Morchedi, Auteur ; Ahmed Ridha Kahia, Auteur ; Hamza Belhadj, Directeur de thèse Année de publication : 2022 Importance : 1 vol (44 f .) Format : 29cm Langues : Français (fre) Catégories : Thèses & Mémoires:Chimie Mots-clés : Chimie Index. décimale : 540 Chimie et sciences connexes Résumé : Molybdenum Disulfide (MoS2) alloy was deposited on a copper substrate by chemical bath deposition using different ratios of Mo and S source at different times of deposition. Effects of different ratios of Mo and S source, and time of deposition on hydrogenevolution reaction (HER) as well as the electrochemical stability in alkaline solution were investigated. The electrocatalytic activity of MoS2 at different ratios was evaluated by the determination of kinetic and mechanism of HER in alkali medium by the polarization measurements, cyclic voltammetry, and electrochemical impedance spectroscopy techniques. The morphology and surface roughness of the deposit MoS2 were investigated using SEM and AFM analyses. Among different ratios of MoS2 the film deposit at 60 min with ratio 4:1 demonstrates a highest electrocatalytic activity toward hydrogen evolution reaction in 1M KOH. The results of SEM and AFM investigation showed that the corresponding HER over potential of the MoS2 film depends strongly on chemical bath deposition time and surface morphology of Mo and S content. Moreover, the performance and stability behaviors of MoS2 electrodes at different ratios were also discussed , and their reaction kinetics were compared in alkaline solution. Côte titre : MACH/0255 En ligne : https://drive.google.com/file/d/1O1D1DUvcWyXSrlgpDxAYILb0GPtwGIKY/view?usp=share [...] Format de la ressource électronique : pdf Bottom-up Synthesis of Nano-catalysts for Electrochemical Energy [texte imprimé] / Loukmane Morchedi, Auteur ; Ahmed Ridha Kahia, Auteur ; Hamza Belhadj, Directeur de thèse . - 2022 . - 1 vol (44 f .) ; 29cm. Langues : Français (fre) Catégories : Thèses & Mémoires:Chimie Mots-clés : Chimie Index. décimale : 540 Chimie et sciences connexes Résumé : Molybdenum Disulfide (MoS2) alloy was deposited on a copper substrate by chemical bath deposition using different ratios of Mo and S source at different times of deposition. Effects of different ratios of Mo and S source, and time of deposition on hydrogenevolution reaction (HER) as well as the electrochemical stability in alkaline solution were investigated. The electrocatalytic activity of MoS2 at different ratios was evaluated by the determination of kinetic and mechanism of HER in alkali medium by the polarization measurements, cyclic voltammetry, and electrochemical impedance spectroscopy techniques. The morphology and surface roughness of the deposit MoS2 were investigated using SEM and AFM analyses. Among different ratios of MoS2 the film deposit at 60 min with ratio 4:1 demonstrates a highest electrocatalytic activity toward hydrogen evolution reaction in 1M KOH. The results of SEM and AFM investigation showed that the corresponding HER over potential of the MoS2 film depends strongly on chemical bath deposition time and surface morphology of Mo and S content. Moreover, the performance and stability behaviors of MoS2 electrodes at different ratios were also discussed , and their reaction kinetics were compared in alkaline solution. Côte titre : MACH/0255 En ligne : https://drive.google.com/file/d/1O1D1DUvcWyXSrlgpDxAYILb0GPtwGIKY/view?usp=share [...] Format de la ressource électronique : pdf

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Code-barres	Cote	Support	Localisation	Section	Disponibilité
MACH/0255	MACH/0255	Mémoire	Bibliothéque des sciences	Anglais	Disponible Disponible

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