{"id":130856,"date":"2025-04-22T14:00:00","date_gmt":"2025-04-22T12:00:00","guid":{"rendered":"https:\/\/www.immo-invest.ch\/effizienzschub-fuer-wasserstoff\/"},"modified":"2025-04-23T11:14:41","modified_gmt":"2025-04-23T09:14:41","slug":"effizienzschub-fuer-wasserstoff","status":"publish","type":"post","link":"https:\/\/www.immo-invest.ch\/fr\/effizienzschub-fuer-wasserstoff\/","title":{"rendered":"Pouss\u00e9e d&rsquo;efficacit\u00e9 pour l&rsquo;hydrog\u00e8ne"},"content":{"rendered":"\n\n<p class=\"wp-block-paragraph\">L&rsquo;\u00e9lectrolyse, qui consiste \u00e0 s\u00e9parer l&rsquo;eau en hydrog\u00e8ne et en oxyg\u00e8ne \u00e0 l&rsquo;aide d&rsquo;un courant \u00e9lectrique, est un proc\u00e9d\u00e9 qui a fait ses preuves, mais qui n&rsquo;est pas encore \u00e9puis\u00e9 en termes d&rsquo;\u00e9nergie. Bien que la tension th\u00e9orique requise soit de 1,23 volt, dans la pratique, il faut souvent 1,5 \u00e0 1,6 volt. Cet \u00e9cart est co\u00fbteux et freine l&rsquo;exploitation \u00e9conomique.<\/p>\n\n\n\n\n\n<p class=\"wp-block-paragraph\">Une \u00e9quipe de recherche dirig\u00e9e par Franz Geiger a maintenant identifi\u00e9 une cause centrale. Avant la lib\u00e9ration d&rsquo;oxyg\u00e8ne, les mol\u00e9cules d&rsquo;eau doivent tourner sur leur axe pour aligner leurs atomes d&rsquo;oxyg\u00e8ne avec l&rsquo;\u00e9lectrode. Ce n&rsquo;est qu&rsquo;alors que la r\u00e9action de d\u00e9gagement d&rsquo;oxyg\u00e8ne peut avoir lieu. Cette rotation n\u00e9cessite une quantit\u00e9 d&rsquo;\u00e9nergie consid\u00e9rable, comparable \u00e0 celle qui maintient les mol\u00e9cules d&rsquo;eau \u00e0 l&rsquo;\u00e9tat liquide.<\/p>\n\n\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Visualisation par la technologie laser<br><\/strong>Cette vision a \u00e9t\u00e9 rendue possible par une nouvelle m\u00e9thode d&rsquo;analyse, la deuxi\u00e8me g\u00e9n\u00e9ration harmonique r\u00e9solue en phase. Gr\u00e2ce \u00e0 cette technologie laser, les chercheurs ont pu observer en temps r\u00e9el quand et combien de mol\u00e9cules changent d&rsquo;orientation. Ces donn\u00e9es fournissent pour la premi\u00e8re fois une quantification \u00e9nerg\u00e9tique pr\u00e9cise de la rotation. Une \u00e9tape importante pour le d\u00e9veloppement de proc\u00e9d\u00e9s d&rsquo;\u00e9lectrolyse plus efficaces.<\/p>\n\n\n\n\n\n<p class=\"wp-block-paragraph\">Une attention particuli\u00e8re a \u00e9t\u00e9 accord\u00e9e \u00e0 l&rsquo;\u00e9lectrode d&rsquo;h\u00e9matite, un oxyde de fer peu co\u00fbteux qui, malgr\u00e9 des propri\u00e9t\u00e9s prometteuses, souffrait jusqu&rsquo;\u00e0 pr\u00e9sent d&rsquo;une faible efficacit\u00e9. La nouvelle analyse r\u00e9v\u00e8le d\u00e9sormais les possibilit\u00e9s d&rsquo;optimisation.<\/p>\n\n\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Le pH basique, un levier pour am\u00e9liorer l&rsquo;efficacit\u00e9<br><\/strong>Autre facteur cl\u00e9, le pH de la solution. L&rsquo;\u00e9tude montre qu&rsquo;un milieu basique, c&rsquo;est-\u00e0-dire un pH sup\u00e9rieur \u00e0 9, r\u00e9duit consid\u00e9rablement l&rsquo;\u00e9nergie n\u00e9cessaire \u00e0 la rotation des mol\u00e9cules. L&rsquo;efficacit\u00e9 de la r\u00e9action de d\u00e9gagement d&rsquo;oxyg\u00e8ne augmente ainsi consid\u00e9rablement. En dessous de ce seuil, l&rsquo;\u00e9lectrolyse ne se d\u00e9roule pratiquement plus.<\/p>\n\n\n\n\n\n<p class=\"wp-block-paragraph\">Cette d\u00e9couverte ouvre de nouvelles perspectives pour la production industrielle d&rsquo;hydrog\u00e8ne. En combinaison avec des catalyseurs cibl\u00e9s et des mat\u00e9riaux de cellules avanc\u00e9s, les installations d&rsquo;\u00e9lectrolyse pourront \u00e0 l&rsquo;avenir fonctionner de mani\u00e8re plus \u00e9conomique et plus respectueuse des ressources.<\/p>\n\n","protected":false},"excerpt":{"rendered":"<p>La production d&rsquo;hydrog\u00e8ne par \u00e9lectrolyse est consid\u00e9r\u00e9e comme une technologie cl\u00e9 pour la transition \u00e9nerg\u00e9tique. Mais son efficacit\u00e9 est jusqu&rsquo;\u00e0 pr\u00e9sent insuffisante. Des chercheurs de la Northwestern University ont identifi\u00e9 une perte d&rsquo;\u00e9nergie qui avait \u00e9t\u00e9 n\u00e9glig\u00e9e jusqu&rsquo;\u00e0 pr\u00e9sent et ont trouv\u00e9 des approches concr\u00e8tes pour l&rsquo;optimiser.<\/p>\n","protected":false},"author":57,"featured_media":130736,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"pmpro_default_level":"","_surecart_dashboard_logo_width":"180px","_surecart_dashboard_show_logo":true,"_surecart_dashboard_navigation_orders":true,"_surecart_dashboard_navigation_invoices":true,"_surecart_dashboard_navigation_subscriptions":true,"_surecart_dashboard_navigation_downloads":true,"_surecart_dashboard_navigation_billing":true,"_surecart_dashboard_navigation_account":true,"inline_featured_image":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[22699,8747],"tags":[25836,3123,4856,872,3931,52605,2002,5410],"class_list":["post-130856","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-durabilite","category-energie","tag-effizienzsteigerung-fr","tag-elektrolyse-fr","tag-energiewende-2-fr","tag-immoinvest-fr","tag-immonews-fr","tag-molekuelrotation-fr","tag-news-fr","tag-wasserstoffproduktion-fr","pmpro-has-access"],"acf":{"bild_mit_ki_erstellt_worden":[],"lead":"La production d'hydrog\u00e8ne par \u00e9lectrolyse est consid\u00e9r\u00e9e comme une technologie cl\u00e9 pour la transition \u00e9nerg\u00e9tique. Mais son efficacit\u00e9 est jusqu'\u00e0 pr\u00e9sent insuffisante. Des chercheurs de la Northwestern University ont identifi\u00e9 une perte d'\u00e9nergie qui avait \u00e9t\u00e9 n\u00e9glig\u00e9e jusqu'\u00e0 pr\u00e9sent et ont trouv\u00e9 des approches concr\u00e8tes pour l'optimiser.","autor":"Quelle: Ingenieur","ort":"","bildunterschrift":"","zusammenfassung":"","bild_im_grid":false,"gallerie":"","newsim":""},"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"La production d&#039;hydrog\u00e8ne par \u00e9lectrolyse est consid\u00e9r\u00e9e comme une technologie cl\u00e9 pour la transition \u00e9nerg\u00e9tique. Mais son efficacit\u00e9 est jusqu&#039;\u00e0 pr\u00e9sent insuffisante. Des chercheurs de la Northwestern University ont identifi\u00e9 une perte d&#039;\u00e9nergie qui avait \u00e9t\u00e9 n\u00e9glig\u00e9e jusqu&#039;\u00e0 pr\u00e9sent et ont trouv\u00e9 des approches concr\u00e8tes pour l&#039;optimiser.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"immoinv_redakteur\"\/>\n\t<meta name=\"google-site-verification\" content=\"fHJKvgWpZCR2zVBHWfkQeFXC11qieUSff0HGNYfuyLA\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/www.immo-invest.ch\/fr\/effizienzschub-fuer-wasserstoff\/\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 5.0.1.1\" \/>\n\t\t<meta property=\"og:locale\" content=\"fr_FR\" \/>\n\t\t<meta property=\"og:site_name\" content=\"immo!nvest - Die Plattform f\u00fcr Standorte und Immobilien - Die\u00a0Plattform f\u00fcr Standorte und Immobilien\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"Pouss\u00e9e d\u2019efficacit\u00e9 pour l\u2019hydrog\u00e8ne - immo!nvest - Die Plattform f\u00fcr Standorte und Immobilien\" \/>\n\t\t<meta property=\"og:description\" content=\"La production d&#039;hydrog\u00e8ne par \u00e9lectrolyse est consid\u00e9r\u00e9e comme une technologie cl\u00e9 pour la transition \u00e9nerg\u00e9tique. Mais son efficacit\u00e9 est jusqu&#039;\u00e0 pr\u00e9sent insuffisante. Des chercheurs de la Northwestern University ont identifi\u00e9 une perte d&#039;\u00e9nergie qui avait \u00e9t\u00e9 n\u00e9glig\u00e9e jusqu&#039;\u00e0 pr\u00e9sent et ont trouv\u00e9 des approches concr\u00e8tes pour l&#039;optimiser.\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/www.immo-invest.ch\/fr\/effizienzschub-fuer-wasserstoff\/\" \/>\n\t\t<meta property=\"og:image\" content=\"https:\/\/www.immo-invest.ch\/wp-content\/uploads\/2025\/04\/panthermedia_B379906720_5184x3456-e1744924428106-1200x600-1.jpg\" \/>\n\t\t<meta property=\"og:image:secure_url\" content=\"https:\/\/www.immo-invest.ch\/wp-content\/uploads\/2025\/04\/panthermedia_B379906720_5184x3456-e1744924428106-1200x600-1.jpg\" \/>\n\t\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t\t<meta property=\"og:image:height\" content=\"600\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2025-04-22T12:00:00+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2025-04-23T09:14:41+00:00\" \/>\n\t\t<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/people\/Immoinvest\/100077962920504\/\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:site\" content=\"@i\" \/>\n\t\t<meta name=\"twitter:title\" content=\"Pouss\u00e9e d\u2019efficacit\u00e9 pour l\u2019hydrog\u00e8ne - immo!nvest - Die Plattform f\u00fcr Standorte und Immobilien\" \/>\n\t\t<meta name=\"twitter:description\" content=\"La production d&#039;hydrog\u00e8ne par \u00e9lectrolyse est consid\u00e9r\u00e9e comme une technologie cl\u00e9 pour la transition \u00e9nerg\u00e9tique. 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