{"id":41776,"date":"2020-06-25T16:13:55","date_gmt":"2020-06-25T14:13:55","guid":{"rendered":"https:\/\/www.iemn.fr\/?p=41776"},"modified":"2020-06-25T16:14:45","modified_gmt":"2020-06-25T14:14:45","slug":"these-yuan-zhang-preparation-de-sulfures-multimetalliques-pour-supercondensateurs-electrochimiques","status":"publish","type":"post","link":"https:\/\/www.iemn.fr\/en\/articles-temporaires\/these-yuan-zhang-preparation-de-sulfures-multimetalliques-pour-supercondensateurs-electrochimiques.html","title":{"rendered":"THESE : Yuan ZHANG \u2013 Pr\u00e9paration de sulfures multim\u00e9talliques pour supercondensateurs \u00e9lectrochimiques"},"content":{"rendered":"<div id='layer_slider_1'  class='avia-layerslider main_color avia-shadow  avia-builder-el-0  el_before_av_heading  avia-builder-el-first  container_wrap sidebar_right'  style='height: 261px;'  ><div id=\"layerslider_58_15vs4mg0wwy6w\" data-ls-slug=\"homepageslider\" class=\"ls-wp-container fitvidsignore ls-selectable\" 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style=\"font-size:14px;text-align:left;font-style:normal;text-decoration:none;text-transform:none;font-weight:700;letter-spacing:0px;border-style:solid;border-color:#000;background-position:0% 0%;background-repeat:no-repeat;width:180px;height:30px;left:0px;top:231px;line-height:32px;color:#ffffff;border-radius:6px 6px 6px 6px;padding-left:50px;background-color:rgba(0, 0, 0, 0.57);\" class=\"ls-l ls-ib-icon ls-text-layer\" data-ls=\"minfontsize:0;minmobilefontsize:0;\"><i class=\"fa fa-quote-right\" style=\"color:#ffffff;margin-right:0.8em;font-size:1em;transform:translateY( -0.125em );\"><\/i>ACTUALITES<\/ls-layer><\/div><\/div><\/div><div id='after_layer_slider_1'  class='main_color av_default_container_wrap container_wrap sidebar_right'  ><div class='container av-section-cont-open' ><div class='template-page content  av-content-small alpha units'><div class='post-entry post-entry-type-page post-entry-41776'><div class='entry-content-wrapper clearfix'>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-kbuv49wm-8113dfb70c0473432bd11e77e2f30cdf\">\n#top .av-special-heading.av-kbuv49wm-8113dfb70c0473432bd11e77e2f30cdf{\nmargin:0 0 10px 0;\npadding-bottom:4px;\n}\nbody .av-special-heading.av-kbuv49wm-8113dfb70c0473432bd11e77e2f30cdf .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-kbuv49wm-8113dfb70c0473432bd11e77e2f30cdf .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-kbuv49wm-8113dfb70c0473432bd11e77e2f30cdf av-special-heading-h2  avia-builder-el-1  el_after_av_layerslider  el_before_av_hr  avia-builder-el-first'><h2 class='av-special-heading-tag'  itemprop=\"headline\"  >THESE : Yuan ZHANG \u2013 Pr\u00e9paration de sulfures multim\u00e9talliques pour supercondensateurs \u00e9lectrochimiques<\/h2><div class=\"special-heading-border\"><div class=\"special-heading-inner-border\"><\/div><\/div><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-18u73nj-dad6a947580930e400fc42ba200e80f1\">\n#top .hr.av-18u73nj-dad6a947580930e400fc42ba200e80f1{\nmargin-top:5px;\nmargin-bottom:5px;\n}\n.hr.av-18u73nj-dad6a947580930e400fc42ba200e80f1 .hr-inner{\nwidth:100%;\n}\n<\/style>\n<div  class='hr av-18u73nj-dad6a947580930e400fc42ba200e80f1 hr-custom  avia-builder-el-2  el_after_av_heading  el_before_av_textblock  hr-left hr-icon-no'><span class='hr-inner inner-border-av-border-thin'><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n<section  class='av_textblock_section av-jriy64i8-2f4600354c0449b610997916bbd9b6bc'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" >\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-13ewzjw-68e036126b913e5028f77311dc66b825\">\n.av_font_icon.av-13ewzjw-68e036126b913e5028f77311dc66b825{\ncolor:#bfbfbf;\nborder-color:#bfbfbf;\n}\n.av_font_icon.av-13ewzjw-68e036126b913e5028f77311dc66b825 .av-icon-char{\nfont-size:60px;\nline-height:60px;\n}\n<\/style>\n<span  class='av_font_icon av-13ewzjw-68e036126b913e5028f77311dc66b825 avia_animate_when_visible av-icon-style- avia-icon-pos-left avia-icon-animate'><span class='av-icon-char' aria-hidden='true' data-av_icon='\ue8c9' data-av_iconfont='entypo-fontello' ><\/span><\/span>\n<p><strong>Yuan ZHANG<\/strong><\/p>\n<p>Soutenance : 2 juillet 2020 \u00e0 10h00<strong><br \/>\n<\/strong>Amphith\u00e9\u00e2tre de l&rsquo;IRI &#8211; Villeneuve d&rsquo;Ascq<\/p>\n<\/div><\/section>\n<section  class='av_textblock_section av-jtefqx33-628129dba2299b2ecd65ebfc92eac29d'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><div  class='hr av-kjh3zw-4dff888f744b728a1aca9b3a0971493a hr-default  avia-builder-el-6  avia-builder-el-no-sibling'><span class='hr-inner'><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n<h5><strong><span style=\"color: #800000;\">Jury :<\/span><\/strong><\/h5>\n<ul>\n<li>Rabah BOUKHERROUB,\u00a0 DR1,\u00a0 Universit\u00e9 de Lille,\u00a0 Directeur de th\u00e8se<\/li>\n<li>Sorin MELINTE,\u00a0 Professeur des Universit\u00e9s,\u00a0 Universit\u00e9 Catholique de Louvain ELEN,\u00a0 Examinateur<\/li>\n<li>Sabine SZUNERITS,\u00a0 Professeur des Universit\u00e9s,\u00a0 Universit\u00e9 de Lille,\u00a0 CoDirecteur de th\u00e8se<\/li>\n<li>Thierry DJENIZIAN,\u00a0 Professeur des Universit\u00e9s,\u00a0 MINES Saint-Etienne Centre microelectronique de Provence,\u00a0 Rapporteur<\/li>\n<li>Mathieu MORCRETTE,\u00a0 Ing\u00e9nieur de recherche,\u00a0 Laboratoire de R\u00e9activit\u00e9 et Chimie des Solides,\u00a0 Examinateur<\/li>\n<li>NATHALIE JOB,\u00a0 Professeur des Universit\u00e9s,\u00a0 Department of Chemical Engineering \/ Ing\u00e9ni\u00e9rie \u00e9lectrochimique : mat\u00e9riaux et proc\u00e9d\u00e9s pour la transformation et le stockage d&rsquo;\u00e9nergie,\u00a0 Rapporteur<\/li>\n<\/ul>\n<h5>Summary:<\/h5>\n<p>Ces derni\u00e8res ann\u00e9es, les supercondensateurs \u00e9lectrochimiques (SE), en tant que syst\u00e8mes de stockage d&rsquo;\u00e9nergie respectueux de l&rsquo;environnement, sont confront\u00e9s \u00e0 plusieurs d\u00e9fis li\u00e9s aux performances, \u00e0 la fonctionnalit\u00e9 et \u00e0 la durabilit\u00e9 des mat\u00e9riaux cl\u00e9s. Il a \u00e9t\u00e9 largement reconnu que les mat\u00e9riaux d&rsquo;\u00e9lectrode avanc\u00e9s, y compris les \u00e9lectrodes \u00e0 base de m\u00e9taux de transition tels que les sulfures m\u00e9talliques, les oxydes \/ hydroxydes, les s\u00e9l\u00e9niures et les phosphures, etc., ont la capacit\u00e9 de stocker beaucoup plus d&rsquo;\u00e9nergie que les mat\u00e9riaux carbon\u00e9s, en raison du processus de transfert de charge faradique impliqu\u00e9s dans le processus \u00e9lectrochimique. Par cons\u00e9quent, ces mat\u00e9riaux d&rsquo;\u00e9lectrode \u00e0 base de m\u00e9taux de transition ont \u00e9t\u00e9 largement \u00e9tudi\u00e9s dans le but de surmonter les d\u00e9fis majeurs cit\u00e9s ci-dessus et de r\u00e9aliser des perc\u00e9es dans les applications pratiques.<br \/>\nDans cette th\u00e8se de doctorat, une revue g\u00e9n\u00e9rale sur les SE, comprenant un bref historique, les structures, le principe de stockage d&rsquo;\u00e9nergie, les caract\u00e9ristiques et les mat\u00e9riaux d&rsquo;\u00e9lectrode, permet de mieux comprendre les crit\u00e8res d&rsquo;\u00e9valuation des performances de diff\u00e9rents types de SE ainsi que les diff\u00e9rents m\u00e9canismes de stockage d\u2019\u00e9nergie des mat\u00e9riaux d&rsquo;\u00e9lectrode. Les donn\u00e9es de la litt\u00e9rature ont r\u00e9v\u00e9l\u00e9 que la combinaison de condensateurs \u00e9lectrochimiques \u00e0 double couche (EDLC) (mat\u00e9riaux carbon\u00e9s), et des caract\u00e9ristiques de type batterie faradique (mat\u00e9riaux d&rsquo;\u00e9lectrodes \u00e0 base de m\u00e9taux de transition) repr\u00e9sente une configuration attrayante et prometteuse pour atteindre des performances \u00e9lev\u00e9es, en raison du stockage d&rsquo;\u00e9nergie \u00e9lev\u00e9 des batteries, et la puissance \u00e9lev\u00e9e et la longue dur\u00e9e de vie des EDLC. Ainsi, le d\u00e9veloppement de deux types de mat\u00e9riaux d&rsquo;\u00e9lectrodes avec des performances am\u00e9lior\u00e9es par rapport aux mat\u00e9riaux d&rsquo;\u00e9lectrodes existants est l&rsquo;approche la plus importante pour surmonter ces d\u00e9fis (Chapitre 1).<br \/>\nParmi les mat\u00e9riaux d&rsquo;\u00e9lectrodes \u00e0 base de m\u00e9taux de transition, le sulfure de cobalt (CoSx), un mat\u00e9riau d&rsquo;anode prometteur pour les batteries au lithium (LIB), pr\u00e9sentant des \u00e9tats \u00e0 valence multiple et une capacit\u00e9 th\u00e9orique de 870 mA h g-1, a attir\u00e9 notre attention. Dans le Chapitre 2, nous d\u00e9crirons la pr\u00e9paration des mat\u00e9riaux d&rsquo;\u00e9lectrodes \u00e0 base Ces derni\u00e8res ann\u00e9es, les supercondensateurs \u00e9lectrochimiques (SE), en tant que syst\u00e8mes de stockage d&rsquo;\u00e9nergie respectueux de l&rsquo;environnement, sont confront\u00e9s \u00e0 plusieurs d\u00e9fis li\u00e9s aux performances, \u00e0 la fonctionnalit\u00e9 et \u00e0 la durabilit\u00e9 des mat\u00e9riaux cl\u00e9s. Il a \u00e9t\u00e9 largement reconnu que les mat\u00e9riaux d&rsquo;\u00e9lectrode avanc\u00e9s, y compris les \u00e9lectrodes \u00e0 base de m\u00e9taux de transition tels que les sulfures m\u00e9talliques, les oxydes \/ hydroxydes, les s\u00e9l\u00e9niures et les phosphures, etc., ont la capacit\u00e9 de stocker beaucoup plus d&rsquo;\u00e9nergie que les mat\u00e9riaux carbon\u00e9s, en raison du processus de transfert de charge faradique impliqu\u00e9s dans le processus \u00e9lectrochimique. Par cons\u00e9quent, ces mat\u00e9riaux d&rsquo;\u00e9lectrode \u00e0 base de m\u00e9taux de transition ont \u00e9t\u00e9 largement \u00e9tudi\u00e9s dans le but de surmonter les d\u00e9fis majeurs cit\u00e9s ci-dessus et de r\u00e9aliser des perc\u00e9es dans les applications pratiques.<br \/>\nDans cette th\u00e8se de doctorat, une revue g\u00e9n\u00e9rale sur les SE, comprenant un bref historique, les structures, le principe de stockage d&rsquo;\u00e9nergie, les caract\u00e9ristiques et les mat\u00e9riaux d&rsquo;\u00e9lectrode, permet de mieux comprendre les crit\u00e8res d&rsquo;\u00e9valuation des performances de diff\u00e9rents types de SE ainsi que les diff\u00e9rents m\u00e9canismes de stockage d\u2019\u00e9nergie des mat\u00e9riaux d&rsquo;\u00e9lectrode. Les donn\u00e9es de la litt\u00e9rature ont r\u00e9v\u00e9l\u00e9 que la combinaison de condensateurs \u00e9lectrochimiques \u00e0 double couche (EDLC) (mat\u00e9riaux carbon\u00e9s), et des caract\u00e9ristiques de type batterie faradique (mat\u00e9riaux d&rsquo;\u00e9lectrodes \u00e0 base de m\u00e9taux de transition) repr\u00e9sente une configuration attrayante et prometteuse pour atteindre des performances \u00e9lev\u00e9es, en raison du stockage d&rsquo;\u00e9nergie \u00e9lev\u00e9 des batteries, et la puissance \u00e9lev\u00e9e et la longue dur\u00e9e de vie des EDLC. Ainsi, le d\u00e9veloppement de deux types de mat\u00e9riaux d&rsquo;\u00e9lectrodes avec des performances am\u00e9lior\u00e9es par rapport aux mat\u00e9riaux d&rsquo;\u00e9lectrodes existants est l&rsquo;approche la plus importante pour surmonter ces d\u00e9fis (Chapitre 1).<br \/>\nParmi les mat\u00e9riaux d&rsquo;\u00e9lectrodes \u00e0 base de m\u00e9taux de transition, le sulfure de cobalt (CoSx), un mat\u00e9riau d&rsquo;anode prometteur pour les batteries au lithium (LIB), pr\u00e9sentant des \u00e9tats \u00e0 valence multiple et une capacit\u00e9 th\u00e9orique de 870 mA h g-1, a attir\u00e9 notre attention. Dans le Chapitre 2, nous d\u00e9crirons la pr\u00e9paration des mat\u00e9riaux d&rsquo;\u00e9lectrodes \u00e0 base de CoS par pr\u00e9cipitation chimique combin\u00e9e \u00e0 un processus d&rsquo;\u00e9change d&rsquo;ions, \u00e9valuerons leurs performances \u00e9lectrochimiques et identifierons leurs limites. Sur la base de la discussion sur les mat\u00e9riaux d&rsquo;\u00e9lectrodes comprenant des m\u00e9taux de transition, la pr\u00e9paration de mat\u00e9riaux composites ou de compos\u00e9s multi-m\u00e9taux repr\u00e9sente une strat\u00e9gie tr\u00e8s prometteuse pour atteindre des performances \u00e9lectrochimiques am\u00e9lior\u00e9es. Par cons\u00e9quent, nous avons \u00e9tudi\u00e9 les performances \u00e9lectrochimiques des mat\u00e9riaux d&rsquo;\u00e9lectrodes composites (CoS\/rGO, CoS\/PF-9) en introduisant diff\u00e9rents types de matrices carbon\u00e9es conductrices (oxyde de graph\u00e8ne r\u00e9duit (rGO) et poly-\u00e9thyl\u00e8nedioxythioph\u00e8ne (PEDOT) -Fe-900 \u00b0 C (PF-9)).<br \/>\nLa performance des mat\u00e9riaux d&rsquo;\u00e9lectrodes composites ainsi synth\u00e9tis\u00e9s a \u00e9t\u00e9 \u00e9valu\u00e9e en utilisant diff\u00e9rentes techniques \u00e9lectrochimiques et les r\u00e9sultats ont r\u00e9v\u00e9l\u00e9 que les mat\u00e9riaux pr\u00e9sentaient une performance \u00e9lectrochimique am\u00e9lior\u00e9e, mais reste insuffisante pour des applications envisag\u00e9es. Par cons\u00e9quent, dans l&rsquo;\u00e9tape suivante, nous avons examin\u00e9 les performances \u00e9lectrochimiques des sulfures multi-m\u00e9taux en introduisant diff\u00e9rents cations m\u00e9talliques. Le ZnS, un mat\u00e9riau \u00e0 large bande interdite (3,5-3,8 eV), a attir\u00e9 notre attention. En raison de la capacit\u00e9 th\u00e9orique \u00e9lev\u00e9e de CoSx, le mat\u00e9riau d&rsquo;\u00e9lectrode ZnCoS a \u00e9t\u00e9 synth\u00e9tis\u00e9 en introduisant du Co dans le r\u00e9seau ZnS. Les caract\u00e9risations \u00e9lectrochimiques ont r\u00e9v\u00e9l\u00e9 une performance remarquable de ZnCoS (Chapitre 3).<br \/>\nDans le Chapitre 4, nous avons pr\u00e9par\u00e9 et examin\u00e9 les propri\u00e9t\u00e9s de stockage d\u2019\u00e9nergie de mat\u00e9riaux \u00e0 base de sulfure de nickel, en raison de leurs riches \u00e9tats d&rsquo;oxydation et de leur capacit\u00e9 th\u00e9orique \u00e9lev\u00e9e (873 mA h g-1 pour NiS2). La pr\u00e9paration de sulfures \/ s\u00e9l\u00e9niures bim\u00e9talliques \u00e0 base de Ni s&rsquo;est av\u00e9r\u00e9e int\u00e9ressante pour am\u00e9liorer la performance de ces mat\u00e9riaux d&rsquo;\u00e9lectrodes. Par cons\u00e9quent, des composites bim\u00e9talliques (ZnS \/ Ni3S2) ont \u00e9t\u00e9 pr\u00e9par\u00e9s et leurs performances ont \u00e9t\u00e9 \u00e9valu\u00e9es.<br \/>\nSur la base de nos travaux ant\u00e9rieurs, les sulfures bim\u00e9talliques se sont r\u00e9v\u00e9l\u00e9s int\u00e9ressants pour am\u00e9liorer la performance \u00e9lectrochimique compar\u00e9s aux sulfures mono-m\u00e9talliques. De plus, les oxyhydroxydes de m\u00e9taux de transition ont \u00e9galement \u00e9t\u00e9 consid\u00e9r\u00e9s comme mat\u00e9riaux d&rsquo;\u00e9lectrodes les plus prometteurs. Par cons\u00e9quent, des mat\u00e9riaux composites Sb2S3\/CoS2\/CrOOH ont \u00e9t\u00e9 synth\u00e9tis\u00e9s et \u00e9tudi\u00e9s comme mat\u00e9riaux d&rsquo;\u00e9lectrode pour les supercondensateurs. Les r\u00e9sultats ont indiqu\u00e9 que ces mat\u00e9riaux d&rsquo;\u00e9lectrode peuvent atteindre une performance \u00e9lectrochimique am\u00e9lior\u00e9e (Chapitre 5).<\/p>\n<h5>Abstract:<\/h5>\n<p>In recent years, electrochemical supercapacitors (ESs), as environmentally-friendly energy storage systems, are facing several challenges associated with the performance, functionality and durability of key materials. It has been widely recognized that advanced electrode materials, including transition metal-based electrodes such as metal sulfides, oxides\/hydroxides, selenides, and phosphides and so on, have the ability to store much more energy than carbon materials, owing to the faradaic charge transfer reactions involved in the electrochemical process. Therefore, these advanced transition metal-based electrode materials have been extensively studied with the aim to overcome the major challenges cited above and achieve breakthroughs in practical applications.<br \/>\nIn this PhD thesis, a general review on ESs, including brief history and background, structures, energy storage principle, characteristic features and electrode materials, allows to gain a better understanding on the performance evaluation criteria of different types of ESs as well as different energy storage mechanisms of the corresponding electrode materials. From this review study, the literature data revealed that the combination of electrochemical double layer capacitors (EDLC), commonly carbon materials, and Faradaic battery-type characteristics (transition metal based electrode materials) represents an appealing and promising configuration to achieve high performance, owing to the high energy storage of batteries, and high power and long lifetime of EDLC. Thus, the development of two types of electrode materials with improved performances relative to existing electrode materials is the most important approach to overcome these challenges (Chapter 1).<br \/>\nAmong various transition metal-based electrode materials, cobalt sulfide (CoSx), a promising anode material for lithium ion batteries, LIBs, exhibiting multi-valence states and a theoretical capacity of 870 mA h g-1, has attracted our attention. In chapter 2, we described the preparation of CoS based electrode materials by chemical precipitation and ion-exchange process, evaluated their electrochemical performance and identified their shortcomings. Based on the discussion on transition metal electrode materials, the construction of composites or multi-metal compounds is regarded as the most promising strategy to prepare electrode materials with improved electrochemical performance. Therefore, we investigated the electrochemical performance of composite electrode materials (CoS\/rGO, CoS\/PF-9) by introducing different types of conducting carbonaceous matrixes (reduced graphene oxide (rGO) and poly-ethylenedioxythiophene (PEDOT)-Fe-900 \u00b0C (PF-9)).<br \/>\nThe performance of the synthesized composite electrode materials was assessed using different electrochemical techniques and the results revealed that the composite materials exhibited improved electrochemical performance, but not remarkable. Therefore, in the following step, we evaluated the electrochemical performance of multi-metal sulfides by introducing different metal cations. ZnS, a wide band gap material (3.5-3.8 eV), has attracted our attention. Owing to the high theoretical capacity of CoSx, ZnCoS electrode material was synthesized by introducing Co into the ZnS lattice and the results indicated that ZnCoS electrode material exhibited a remarkable electrochemical performance (Chapter 3).<br \/>\nIn chapter 4, we have examined Ni-based sulfide electrode materials, owing to their rich oxidation states, high theoretical capacity (873 mA h g-1 for NiS2) and cost effectiveness. The preparation of Ni-based bimetal sulfides\/selenides has proven to enhance their electrochemical performance as electrode materials. Therefore, bi-metal (ZnS\/Ni3S2) composites were prepared and their performance was assessed.<br \/>\nBased on our previous work, bi-metal sulfides proved to exhibit an enhanced electrochemical performance than mono metal sulfides. In addition, transition metal oxy-hydroxides have also been regarded as one of the most promising electrode materials. However, little work was focused on employing the composites of transition-metal sulfides and oxides as electrode materials for SCs. Hence, Sb2S3\/CoS2\/CrOOH composite materials were synthesized and<\/p>\n<p>In recent years, electrochemical supercapacitors (ESs), as environmentally-friendly energy storage systems, are facing several challenges associated with the performance, functionality and durability of key materials. It has been widely recognized that advanced electrode materials, including transition metal-based electrodes such as metal sulfides, oxides\/hydroxides, selenides, and phosphides and so on, have the ability to store much more energy than carbon materials, owing to the faradaic charge transfer reactions involved in the electrochemical process. Therefore, these advanced transition metal-based electrode materials have been extensively studied with the aim to overcome the major challenges cited above and achieve breakthroughs in practical applications.<br \/>\nIn this PhD thesis, a general review on ESs, including brief history and background, structures, energy storage principle, characteristic features and electrode materials, allows to gain a better understanding on the performance evaluation criteria of different types of ESs as well as different energy storage mechanisms of the corresponding electrode materials. From this review study, the literature data revealed that the combination of electrochemical double layer capacitors (EDLC), commonly carbon materials, and Faradaic battery-type characteristics (transition metal based electrode materials) represents an appealing and promising configuration to achieve high performance, owing to the high energy storage of batteries, and high power and long lifetime of EDLC. Thus, the development of two types of electrode materials with improved performances relative to existing electrode materials is the most important approach to overcome these challenges (Chapter 1).<br \/>\nAmong various transition metal-based electrode materials, cobalt sulfide (CoSx), a promising anode material for lithium ion batteries, LIBs, exhibiting multi-valence states and a theoretical capacity of 870 mA h g-1, has attracted our attention. In chapter 2, we described the preparation of CoS based electrode materials by chemical precipitation and ion-exchange process, evaluated their electrochemical performance and identified their shortcomings. Based on the discussion on transition metal electrode materials, the construction of composites or multi-metal compounds is regarded as the most promising strategy to prepare electrode materials with improved electrochemical performance. Therefore, we investigated the electrochemical performance of composite electrode materials (CoS\/rGO, CoS\/PF-9) by introducing different types of conducting carbonaceous matrixes (reduced graphene oxide (rGO) and poly-ethylenedioxythiophene (PEDOT)-Fe-900 \u00b0C (PF-9)).<br \/>\nThe performance of the synthesized composite electrode materials was assessed using different electrochemical techniques and the results revealed that the composite materials exhibited improved electrochemical performance, but not remarkable. Therefore, in the following step, we evaluated the electrochemical performance of multi-metal sulfides by introducing different metal cations. ZnS, a wide band gap material (3.5-3.8 eV), has attracted our attention. Owing to the high theoretical capacity of CoSx, ZnCoS electrode material was synthesized by introducing Co into the ZnS lattice and the results indicated that ZnCoS electrode material exhibited a remarkable electrochemical performance (Chapter 3).<br \/>\nIn chapter 4, we have examined Ni-based sulfide electrode materials, owing to their rich oxidation states, high theoretical capacity (873 mA h g-1 for NiS2) and cost effectiveness. The preparation of Ni-based bimetal sulfides\/selenides has proven to enhance their electrochemical performance as electrode materials. Therefore, bi-metal (ZnS\/Ni3S2) composites were prepared and their performance was assessed.<br \/>\nBased on our previous work, bi-metal sulfides proved to exhibit an enhanced electrochemical performance than mono metal sulfides. In addition, transition metal oxy-hydroxides have also been regarded as one of the most promising electrode materials. However, little work was focused on employing the composites of transition-metal sulfides and oxides as electrode materials for SCs. Hence, Sb2S3\/CoS2\/CrOOH composite materials were synthesized and investigated as electrode materials for SCs. The results indicated that these electrode materials could achieve an enhanced electrochemical performance (Chapter 5)<\/p>\n<\/div><\/section>","protected":false},"excerpt":{"rendered":"","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[36],"tags":[],"class_list":["post-41776","post","type-post","status-publish","format-standard","hentry","category-articles-temporaires"],"_links":{"self":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts\/41776","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/comments?post=41776"}],"version-history":[{"count":0,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts\/41776\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/media?parent=41776"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/categories?post=41776"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/tags?post=41776"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}