{"id":16511,"date":"2023-08-17T14:45:44","date_gmt":"2023-08-17T11:45:44","guid":{"rendered":"https:\/\/hho-bulgaria.com\/?post_type=green-hydrogen-news&#038;p=16511"},"modified":"2023-08-17T14:45:44","modified_gmt":"2023-08-17T11:45:44","slug":"record-breaking-solar-hydrogen-device-turning-sunlight-into-clean-energy","status":"publish","type":"green-hydrogen-news","link":"https:\/\/hho-bulgaria.com\/en\/green-hydrogen-news\/record-breaking-solar-hydrogen-device-turning-sunlight-into-clean-energy\/","title":{"rendered":"Record-Breaking Solar Hydrogen Device: Turning Sunlight Into Clean Energy"},"content":{"rendered":"<p>Record-breaking solar hydrogen device: turning sunlight into clean energy.<\/p>\n<p>New standard for green hydrogen technology set by Rice U. engineers.<\/p>\n<p>Rice University engineers can turn sunlight into hydrogen with record-breaking efficiency thanks to a device that combines next-generation\u00a0<a href=\"https:\/\/www.nature.com\/articles\/s41377-022-01010-4#:~:text=Metal%2Dhalide%20perovskites%2C%20a%20unique,%2C4%2C5%2C6.\" target=\"_blank\" rel=\"noreferrer noopener\">halide perovskite semiconductors<\/a>\u00a0with electrocatalysts in a single, durable, cost-effective and scalable device.<\/p>\n<p>The new technology is a significant step forward for clean energy and could serve as a platform for a wide range of chemical reactions that use solar-harvested electricity to convert feedstocks into fuels.<\/p>\n<p>Revolutionary Photoreactor Design<\/p>\n<p>Aditya Mohite\u2019s lab, specializing in chemical and biomolecular engineering, spearheaded the construction of this integrated photoreactor. A key element in the device\u2019s design is an anticorrosion barrier that effectively insulates the semiconductor from water without impeding electron transfer. As reported in a study published in\u00a0<em>Nature Communications<\/em>, the device boasts an impressive 20.8% solar-to-hydrogen conversion efficiency.<\/p>\n<p>Austin Fehr, a chemical and biomolecular engineering doctoral student and one of the lead authors of the study, emphasized the importance of this work.<\/p>\n<p><strong>Austin Fehr,<\/strong>\u00a0a chemical and biomolecular engineering doctoral student said:<\/p>\n<blockquote class=\"wp-block-quote\"><p>Using sunlight as an energy source to manufacture chemicals is one of the largest hurdles to a clean energy economy.<\/p><\/blockquote>\n<p>\u201cOur goal is to build economically feasible platforms that can generate solar-derived fuels. Here, we designed a system that absorbs light and completes electrochemical water-splitting chemistry on its surface.\u201d<\/p>\n<p>Overcoming Challenges With Photoelectrochemical Cells<\/p>\n<p>The device is known as a photoelectrochemical cell because the absorption of light, its conversion into electricity and the use of the electricity to power a chemical reaction all occur in the same device. Until now, using photoelectrochemical technology to produce green hydrogen was hampered by low efficiencies and the high cost of\u00a0semiconductors.<\/p>\n<p>Innovation Journey and Future Perspectives<\/p>\n<p>The Mohite lab and its collaborators created the device by turning their\u00a0<a href=\"https:\/\/www.science.org\/doi\/10.1126\/science.abq7652\" target=\"_blank\" rel=\"noreferrer noopener\">highly-competitive solar cell<\/a>\u00a0into a reactor that could use harvested energy to split water into oxygen and hydrogen. The challenge they had to overcome was that halide perovskites are extremely unstable in water and coatings used to insulate the semiconductors ended up either disrupting their function or damaging them.<\/p>\n<p><strong>Michael Wong<\/strong>, a Rice chemical engineer and co-author on the study, said:<\/p>\n<blockquote class=\"wp-block-quote\"><p>Over the last two years, we\u2019ve gone back and forth trying different materials and techniques.<\/p><\/blockquote>\n<p>After lengthy trials failed to yield the desired result, the researchers finally came across a winning solution.<\/p>\n<p>\u201cOur key insight was that you needed two layers to the barrier, one to block the water and one to make good electrical contact between the perovskite layers and the protective layer,\u201d Fehr said. \u201cOur results are the highest efficiency for photoelectrochemical cells without solar concentration, and the best overall for those using halide perovskite semiconductors.<\/p>\n<p>\u201cIt is a first for a field that has historically been dominated by prohibitively expensive semiconductors, and may represent a pathway to commercial feasibility for this type of device for the first time ever,\u201d Fehr said.<\/p>\n<p>The researchers showed their barrier design worked for different reactions and with different semiconductors, making it applicable across many systems.<\/p>\n<p>\u201cWe hope that such systems will serve as a platform for driving a wide range of electrons to fuel-forming reactions using abundant feedstocks with only sunlight as the energy input,\u201d Mohite said.<\/p>\n<p>\u201cWith further improvements to stability and scale, this technology could open up the hydrogen economy and change the way humans make things from fossil fuel to solar fuel,\u201d Fehr added.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Record-breaking solar hydrogen device: turning sunlight into clean energy.<\/p>\n","protected":false},"featured_media":16512,"parent":0,"menu_order":0,"template":"","news-category":[],"class_list":["post-16511","green-hydrogen-news","type-green-hydrogen-news","status-publish","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Record-Breaking Solar Hydrogen Device: Turning Sunlight Into Clean Energy &#187; 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