{"id":157216,"date":"2026-05-19T12:02:26","date_gmt":"2026-05-19T10:02:26","guid":{"rendered":"https:\/\/www.immo-invest.ch\/elektrolyse-neu-gedacht\/"},"modified":"2026-05-19T13:27:35","modified_gmt":"2026-05-19T11:27:35","slug":"elektrolyse-neu-gedacht","status":"publish","type":"post","link":"https:\/\/www.immo-invest.ch\/fr\/elektrolyse-neu-gedacht\/","title":{"rendered":"L&rsquo;\u00e9lectrolyse repens\u00e9e"},"content":{"rendered":"\n\n<p class=\"wp-block-paragraph\">L&rsquo;\u00e9lectricit\u00e9 renouvelable plus l&rsquo;eau donnent de l&rsquo;hydrog\u00e8ne et de l&rsquo;oxyg\u00e8ne, et l&rsquo;eau est \u00e0 nouveau produite lors de l&rsquo;utilisation. Mais en r\u00e9alit\u00e9, plus de 90 pour cent de l&rsquo;hydrog\u00e8ne utilis\u00e9 aujourd&rsquo;hui provient de sources fossiles, principalement du gaz naturel. L&rsquo;hydrog\u00e8ne vert issu de l&rsquo;\u00e9lectrolyse co\u00fbte actuellement environ deux fois plus cher que l&rsquo;hydrog\u00e8ne produit de mani\u00e8re conventionnelle.<\/p>\n\n\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Zone probl\u00e9matique de l&rsquo;\u00e9lectrolyseur<br><\/strong>Les mat\u00e9riaux utilis\u00e9s dans l&rsquo;\u00e9lectrolyseur sont un facteur de co\u00fbt important. Le projet de l&rsquo;Empa se concentre sur la technologie PEMWE, qui se combine bien avec les \u00e9nergies renouvelables fluctuantes. Cependant, il r\u00e8gne \u00e0 l&rsquo;int\u00e9rieur un milieu acide hautement corrosif dans lequel l&rsquo;acier non affin\u00e9 \u00ab\u00a0dispara\u00eet\u00a0\u00bb litt\u00e9ralement. M\u00eame les composants situ\u00e9s en dehors de la zone acide souffrent lorsque les plus petits ions m\u00e9talliques p\u00e9n\u00e8trent dans l&rsquo;eau tr\u00e8s pure.<\/p>\n\n\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Le titane et le platine, des facteurs de co\u00fbts<br><\/strong>Afin de ma\u00eetriser l&rsquo;environnement agressif, les composants pour l&rsquo;arriv\u00e9e et l&rsquo;\u00e9vacuation de l&rsquo;eau et du gaz sont aujourd&rsquo;hui fabriqu\u00e9s en titane. Le titane est cher, difficile \u00e0 travailler et doit en outre \u00eatre recouvert de platine pour \u00e9viter qu&rsquo;il ne s&rsquo;oxyde et n&rsquo;affecte les performances de l&rsquo;\u00e9lectrolyseur. Cette combinaison de m\u00e9tal sp\u00e9cial et de m\u00e9tal pr\u00e9cieux rend le mat\u00e9riel co\u00fbteux et limite le potentiel de mise \u00e0 l&rsquo;\u00e9chelle.<\/p>\n\n\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Acier plus oxyde de titane au lieu de titane plus platine<br><\/strong>Le scientifique des mat\u00e9riaux Konstantin Egorov et son \u00e9quipe suivent une autre approche. Ils remplacent le mat\u00e9riau de support, le titane, par de l&rsquo;acier et le prot\u00e8gent par une couche sp\u00e9ciale d&rsquo;oxyde de titane. Le rutile utilis\u00e9 est hautement cristallin et pauvre en oxyg\u00e8ne. L&rsquo;absence d&rsquo;atomes d&rsquo;oxyg\u00e8ne assure la conductivit\u00e9 \u00e9lectrique, la haute cristallinit\u00e9 la r\u00e9sistance \u00e0 la corrosion. On obtient ainsi une couche protectrice conductrice et stable sur un substrat nettement moins cher.<\/p>\n\n\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Rev\u00eatement adapt\u00e9 \u00e0 l&rsquo;industrie<br><\/strong>Pour le rev\u00eatement, l&rsquo;\u00e9quipe utilise le d\u00e9p\u00f4t physique en phase vapeur, un proc\u00e9d\u00e9 bien \u00e9tabli dans l&rsquo;industrie. Les premi\u00e8res applications sur la plaque dite bipolaire le montrent, les composants rev\u00eatus passent avec succ\u00e8s des tests de corrosion exigeants en laboratoire et dans un \u00e9lectrolyseur en fonctionnement. Les composants en acier sont en outre plus faciles \u00e0 usiner, ce qui permet de nouveaux designs favorisant l&rsquo;\u00e9coulement et peut encore augmenter l&rsquo;efficacit\u00e9 de la cellule.<\/p>\n\n\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Le prochain obstacle<br><\/strong>Les chercheurs s&rsquo;attaquent ensuite \u00e0 la couche de transport poreuse. Ici, le rev\u00eatement d&rsquo;oxyde de titane doit p\u00e9n\u00e9trer profond\u00e9ment dans les pores sans les obstruer. S&rsquo;ils y parviennent, deux composants essentiels de l&rsquo;\u00e9lectrolyseur PEMWE reposeront sur une base mat\u00e9rielle plus avantageuse et \u00e9volutive. Le projet se poursuit jusqu&rsquo;\u00e0 la fin de l&rsquo;ann\u00e9e 2026, apr\u00e8s quoi un partenaire industriel devrait aider \u00e0 amener la technologie vers la commercialisation.<\/p>\n\n","protected":false},"excerpt":{"rendered":"<p>L&rsquo;hydrog\u00e8ne vert est consid\u00e9r\u00e9 comme la cl\u00e9 de la transition \u00e9nerg\u00e9tique, mais sa production reste ch\u00e8re. Ce sont surtout les mat\u00e9riaux utilis\u00e9s dans les \u00e9lectrolyseurs qui font grimper les co\u00fbts. Les chercheurs de l&rsquo;Empa d\u00e9veloppent des rev\u00eatements qui remplacent les m\u00e9taux pr\u00e9cieux, stoppent la corrosion et peuvent \u00eatre mis \u00e0 l&rsquo;\u00e9chelle dans l&rsquo;industrie. Ainsi, la perc\u00e9e \u00e9conomique de l&rsquo;hydrog\u00e8ne vert se rapproche.<\/p>\n","protected":false},"author":2,"featured_media":157217,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_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":[22699,8747,55976,56006],"tags":[58984,3123,2339,58985,872,3931,58986,2002,58987,58988],"class_list":["post-157216","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-durabilite","category-energie","category-institutions-formation","category-international","tag-edelmetalle","tag-elektrolyse-fr","tag-empa-fr","tag-gruner-wasserstoff","tag-immoinvest-fr","tag-immonews-fr","tag-korrosion","tag-news-fr","tag-pemwe","tag-titanoxid"],"acf":{"bild_mit_ki_erstellt_worden":"","lead":"L'hydrog\u00e8ne vert est consid\u00e9r\u00e9 comme la cl\u00e9 de la transition \u00e9nerg\u00e9tique, mais sa production reste ch\u00e8re. Ce sont surtout les mat\u00e9riaux utilis\u00e9s dans les \u00e9lectrolyseurs qui font grimper les co\u00fbts. Les chercheurs de l'Empa d\u00e9veloppent des rev\u00eatements qui remplacent les m\u00e9taux pr\u00e9cieux, stoppent la corrosion et peuvent \u00eatre mis \u00e0 l'\u00e9chelle dans l'industrie. Ainsi, la perc\u00e9e \u00e9conomique de l'hydrog\u00e8ne vert se rapproche.","autor":"","ort":"","bildunterschrift":"Konstantin Egorov, chercheur \u00e0 l'Empa, applique un rev\u00eatement d'oxyde de titane r\u00e9sistant \u00e0 la corrosion sur des composants en acier inoxydable. Photo : \u00a9 Empa","zusammenfassung":"","bild_im_grid":false,"gallerie":"","newsim":"2412"},"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"L&#039;hydrog\u00e8ne vert est consid\u00e9r\u00e9 comme la cl\u00e9 de la transition \u00e9nerg\u00e9tique, mais sa production reste ch\u00e8re. Ce sont surtout les mat\u00e9riaux utilis\u00e9s dans les \u00e9lectrolyseurs qui font grimper les co\u00fbts. Les chercheurs de l&#039;Empa d\u00e9veloppent des rev\u00eatements qui remplacent les m\u00e9taux pr\u00e9cieux, stoppent la corrosion et peuvent \u00eatre mis \u00e0 l&#039;\u00e9chelle dans l&#039;industrie. Ainsi, la perc\u00e9e \u00e9conomique de l&#039;hydrog\u00e8ne vert se rapproche.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"immovestuser\"\/>\n\t<meta name=\"google-site-verification\" content=\"fHJKvgWpZCR2zVBHWfkQeFXC11qieUSff0HGNYfuyLA\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/www.immo-invest.ch\/fr\/elektrolyse-neu-gedacht\/\" \/>\n\t\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 5.0.3\" \/>\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=\"L\u2019\u00e9lectrolyse repens\u00e9e - immo!nvest - Die Plattform f\u00fcr Standorte und Immobilien\" \/>\n\t\t<meta property=\"og:description\" content=\"L&#039;hydrog\u00e8ne vert est consid\u00e9r\u00e9 comme la cl\u00e9 de la transition \u00e9nerg\u00e9tique, mais sa production reste ch\u00e8re. Ce sont surtout les mat\u00e9riaux utilis\u00e9s dans les \u00e9lectrolyseurs qui font grimper les co\u00fbts. Les chercheurs de l&#039;Empa d\u00e9veloppent des rev\u00eatements qui remplacent les m\u00e9taux pr\u00e9cieux, stoppent la corrosion et peuvent \u00eatre mis \u00e0 l&#039;\u00e9chelle dans l&#039;industrie. 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Ce sont surtout les mat\u00e9riaux utilis\u00e9s dans les \u00e9lectrolyseurs qui font grimper les co\u00fbts. Les chercheurs de l&#039;Empa d\u00e9veloppent des rev\u00eatements qui remplacent les m\u00e9taux pr\u00e9cieux, stoppent la corrosion et peuvent \u00eatre mis \u00e0 l&#039;\u00e9chelle dans l&#039;industrie. 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