{"id":33896,"date":"2012-03-15T09:59:29","date_gmt":"2012-03-15T13:59:29","guid":{"rendered":"https:\/\/www.ucf.edu\/news\/?p=33896"},"modified":"2024-02-09T11:54:08","modified_gmt":"2024-02-09T16:54:08","slug":"researchers-create-more-efficient-hydrogen-fuel-cells","status":"publish","type":"post","link":"https:\/\/www.ucf.edu\/news\/researchers-create-more-efficient-hydrogen-fuel-cells\/","title":{"rendered":"Researchers Create More Efficient Hydrogen Fuel Cells"},"content":{"rendered":"<p>Hydrogen fuel cells, like those found in some \u201cgreen\u201d vehicles, have a lot of promise as an alternative fuel source, but making them practical on a large scale requires them to be more efficient and cost effective.<\/p>\n<p>A research team from the University of Central Florida may have found a way around both hurdles.<\/p>\n<p>The majority of hydrogen fuel cells use catalysts made of a rare and expensive metal \u2013 platinum. There are few alternatives because most elements can\u2019t endure the fuel cell\u2019s highly acidic solvents present in the reaction that converts hydrogen\u2019s chemical energy into electrical power. Only four elements can resist the corrosive process \u2013 platinum, iridium, gold and palladium. The first two are rare and expensive, which makes them impractical for large-scale use. The other two don\u2019t do well with the chemical reaction.<\/p>\n<p>UCF Professor Sergey Stolbov and postdoctoral research associate Marisol Alc\u00e1ntara Ortigoza focused on making gold and palladium better suited for the\u00a0 reaction.<\/p>\n<p>They created a sandwich-like structure that layers cheaper and more abundant elements with gold and palladium and other elements to make it more effective.<\/p>\n<p>The outer monoatomic layer (the top of the sandwich) is either palladium or gold. Below it is a layer that works to enhance the energy conversion rate but also acts to protect the catalyst from the acidic environment. These two layers reside on the bottom slice of the sandwich &#8212; an inexpensive substrate (tungsten), which also plays a role in the stability of the catalyst.<\/p>\n<p>\u201cWe are very encouraged by our first attempts that suggest that we can create two cost-effective and highly active palladium- and gold-based catalysts \u2013for hydrogen fuel cells, a clean and renewable energy source,\u201d Stolbov said.<\/p>\n<p>Stolbov\u2019s work was recently published in <em>The Journal of Physical Chemistry Letters<\/em>\u00a0 and was featured on <a href=\"https:\/\/phys.org\/news\/2012-02-rational-hydrogen-fuel-cell-efficiency.html\">PhysOrg.com<\/a>, a Web-based science, technology and research news service.<\/p>\n<p>By creating these structures, more energy is converted, and because the more expensive and rare metals are not used, the cost could be significantly less.<\/p>\n<p>Stolbov said experiments are needed to test their predictions, but he says the approach is quite reliable. He\u2019s already working with a group within the U.S. Department of Energy to determine whether the results can be duplicated and have potential for large-scale application.<\/p>\n<p>If a way could be found to make hydrogen fuel cells practical and cost effective, vehicles that run on gasoline and contribute to the destruction of the ozone layer could become a thing of the past.<\/p>\n<p>Stolbov joined UCF\u2019s physics department in 2006. Before that he was a research assistant professor at Kansas State University. He earned multiple degrees in physics from Rostov State University in Russia and was a Postdoctoral Fellow at the Carnegie Institution of Washington, D.C. He is a frequent international speaker and has written dozens of articles on physics.<\/p>\n","protected":false},"excerpt":{"rendered":"Hydrogen fuel cells, like those found in some \u201cgreen\u201d vehicles, have a lot of promise as an alternative fuel source, but making them practical on a large scale requires them to be more efficient and cost effective. A research team from the University of Central Florida may have found a way around both hurdles. The majority of hydrogen fuel cells&hellip;","protected":false},"author":16,"featured_media":33897,"comment_status":"open","ping_status":"closed","sticky":false,"template":"template-twocol.php","format":"standard","meta":{"_acf_changed":false,"lazy_load_responsive_images_disabled":false,"footnotes":"","_links_to":"","_links_to_target":"","_wp_rev_ctl_limit":""},"categories":[24],"tags":[3715,202],"tu_author":[],"class_list":["post-33896","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-science-technology","tag-physics","tag-alumni"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.3 (Yoast SEO v27.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Researchers Create More Efficient Hydrogen Fuel Cells | University of Central Florida News<\/title>\n<meta name=\"description\" content=\"Hydrogen fuel cells, like those found in some \u201cgreen\u201d vehicles, have a lot of promise as an 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