{"id":42910,"date":"2020-03-11T09:40:42","date_gmt":"2020-03-11T07:40:42","guid":{"rendered":"https:\/\/www.iemn.fr\/articles-temporaires-anglais\/des-micro-supercondensateurs-pour-alimenter-linternet-des-objets-2.html"},"modified":"2020-11-09T10:18:37","modified_gmt":"2020-11-09T08:18:37","slug":"des-micro-supercondensateurs-pour-alimenter-linternet-des-objets-2","status":"publish","type":"post","link":"https:\/\/www.iemn.fr\/en\/newsletter\/des-micro-supercondensateurs-pour-alimenter-linternet-des-objets-2.html","title":{"rendered":"Microsupercapacitors to power the Internet of Things"},"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_jxeqrtbiowkc\" data-ls-slug=\"homepageslider\" class=\"ls-wp-container fitvidsignore ls-selectable\" style=\"width:1140px;height:260px;margin:0 auto;margin-bottom: 0px;\"><div class=\"ls-slide\" data-ls=\"duration:6000;transition2d:5;\"><img loading=\"lazy\" decoding=\"async\" width=\"2600\" height=\"270\" src=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1.jpg\" class=\"ls-bg\" alt=\"\" srcset=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1.jpg 2600w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-300x31.jpg 300w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-768x80.jpg 768w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-1030x107.jpg 1030w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-1500x156.jpg 1500w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2019\/01\/sliders_news1-705x73.jpg 705w\" sizes=\"auto, (max-width: 2600px) 100vw, 2600px\" \/><ls-layer 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-42910'><div class='entry-content-wrapper clearfix'>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-kha9opd8-6b795e311be6772bfd700a947fef0001\">\n#top .av-special-heading.av-kha9opd8-6b795e311be6772bfd700a947fef0001{\npadding-bottom:10px;\n}\nbody .av-special-heading.av-kha9opd8-6b795e311be6772bfd700a947fef0001 .av-special-heading-tag .heading-char{\nfont-size:25px;\n}\n.av-special-heading.av-kha9opd8-6b795e311be6772bfd700a947fef0001 .av-subheading{\nfont-size:15px;\n}\n<\/style>\n<div  class='av-special-heading av-kha9opd8-6b795e311be6772bfd700a947fef0001 av-special-heading-h3  avia-builder-el-1  el_after_av_layerslider  el_before_av_hr  avia-builder-el-first'><h3 class='av-special-heading-tag'  itemprop=\"headline\"  >Microsupercapacitors to power the Internet of Things<\/h3><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-k7n0k7oq-ea711753a9369e3edcc9fa946a3e8f95'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><blockquote>\n<p>Supercapacitors are a solution of choice for supplying power to connected objects, especially when their electrodes are made of vanadium nitride. However, the origin of the performance of this material remains unknown. Researchers from IEMN, University of Nantes have elucidated the process and discovered a way to use it for micro-supercapacitors (MSC). This work, published in the journal Energy &amp; Environmental Science, paves the way for extremely efficient and robust MSCs.<\/p>\n<\/blockquote>\n<\/div><\/section>\n<section  class='av_textblock_section av-k7n0m4r1-fa4ebcfa8811cbf7ce98813e7d695374'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><h4>How vanadium nitride will power the Internet of Things<\/h4>\n<\/div><\/section>\n<section  class='av_textblock_section av-k7n0nftj-df2ed7fd2f78cbe48ff4d603bfdea4a7'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><p>Microsupercapacitors (MSCs) are accompanying the popularity of connected objects, but their energy storage still needs to be improved in a context of increasing miniaturization. Vanadium nitride, for example, is used for large supercapacitors, but it is incorporated in powder form, a form that is incompatible with miniaturization Researchers at the Institute of Electronics, Microelectronics and Nanotechnology (<a href=\"https:\/\/www.iemn.fr\/en\/\" target=\"_blank\" rel=\"noopener noreferrer\">IEMN<\/a>CNRS\/Universit\u00e9 polytechnique Hauts-de-France\/Universit\u00e9 de Lille\/Centrale Lille), of the Institut des mat\u00e9riaux Jean Rouxel (<a href=\"https:\/\/www.cnrs-imn.fr\/\" target=\"_blank\" rel=\"noopener noreferrer\">IMN<\/a>CNRS\/University of Nantes) and the Catalysis and Solid Chemistry Unit (<a href=\"http:\/\/uccs.univ-lille1.fr\/index.php\/fr\/\" target=\"_blank\" rel=\"noopener noreferrer\">UCCS<\/a>CNRS\/University of Artois\/University of Lille\/Centrale Lille) have elucidated the process of charge storage in vanadium nitride, after having used this material for the first time in MSCs. The team was supported by the Network on Electrochemical Energy Storage (<a href=\"https:\/\/www.energie-rs2e.com\/fr\" target=\"_blank\" rel=\"noopener noreferrer\">RS2E<\/a>) and the Renatech network.<\/p>\n<p>The researchers used an industrial process of microelectronics: magnetron sputtering. A metallic vanadium roller is subjected to ionized gases and then condensed on a silicon substrate. The material delivers an electrical storage capacity per unit volume (&gt; 700 F cm-3) four times higher than that of nanoporous carbon electrodes. This MSC retains more than 80% of its initial performance after 50,000 charge and discharge cycles, when most MSCs wear out after 10,000 cycles. Thanks to analyses, conducted in part at the Sun synchrotron, the researchers have shown that this performance is due to the presence of a thin layer of vanadium oxide, which forms naturally when the electrodes are in contact with air. It is this layer that stores the electrical charges, without involving the rest of the material, which thus deteriorates much more slowly.<\/p>\n<div id=\"attachment_39622\" style=\"width: 516px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2020\/03\/Supercondensateurs.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-39622\" class=\"wp-image-39622\" src=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2020\/03\/Supercondensateurs.jpg\" alt=\"\" width=\"506\" height=\"485\" \/><\/a><p id=\"caption-attachment-39622\" class=\"wp-caption-text\">Study of the charge storage mechanism in vanadium nitride integrated as a micro-supercapacitor electrode (c) IEMN<\/p><\/div>\n<\/div><\/section>\n<section  class='av_textblock_section av-k7n14arl-a2e326a03745a18d56c8da9cdf2e90f1'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><p><strong>Reference:<\/strong><\/p>\n<p>Novel insights into the charge storage mechanism in pseudocapacitive vanadium nitride thick films for high-performance on-chip microsupercapacitors,<br \/>\nK. Robert, D. Sti\u00e9venard, D. Deresmes, C. Douard, A. Iadecola, D. Troadec, P. Simon, N. Nuns, M. Marinova, M. Huv\u00e9, P. Roussel, T. Brousse and C. Lethien.<br \/>\nEnergy &amp; Environmental Science, 2020<br \/>\nDOI: <a href=\"https:\/\/pubs.rsc.org\/en\/content\/articlelanding\/2020\/EE\/C9EE03787J#!divAbstract\" target=\"_blank\" rel=\"noopener noreferrer\">doi.org\/10.1039\/C9EE03787J<\/a><\/p>\n<\/div><\/section>\n<section  class='av_textblock_section av-k5880yzp-ee131e426626e8783d1e411d5f0e1416'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><div  class='avia-button-wrap av-rpqvoq-736fd1bcd5360b3eb9fd38e56b959002-wrap avia-button-left  avia-builder-el-8  avia-builder-el-no-sibling'><a href='mailto:christophe.lethien@univ-lille.fr'  class='avia-button av-rpqvoq-736fd1bcd5360b3eb9fd38e56b959002 av-link-btn avia-icon_select-yes-left-icon avia-size-small avia-position-left avia-color-silver'   aria-label=\"Contact: Christophe LETHIEN\"><span class='avia_button_icon avia_button_icon_left' aria-hidden='true' data-av_icon='\ue805' data-av_iconfont='entypo-fontello'><\/span><span class='avia_iconbox_title' >Contact: Christophe LETHIEN<\/span><\/a><\/div>\n<\/div><\/section>","protected":false},"excerpt":{"rendered":"","protected":false},"author":2,"featured_media":39626,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[297],"tags":[205,237,42,300,289,290],"class_list":["post-42910","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-newsletter","tag-energie","tag-energy","tag-iemn","tag-nl1","tag-supercondensateur","tag-vanadium"],"_links":{"self":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts\/42910","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=42910"}],"version-history":[{"count":0,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts\/42910\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/media\/39626"}],"wp:attachment":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/media?parent=42910"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/categories?post=42910"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/tags?post=42910"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}