{"id":38231,"date":"2026-06-08T15:50:00","date_gmt":"2026-06-08T15:50:00","guid":{"rendered":"https:\/\/www.tun.com\/home\/?p=38231"},"modified":"2026-06-08T19:41:06","modified_gmt":"2026-06-08T19:41:06","slug":"new-polyether-electrolyte-could-transform-lithium-metal-batteries","status":"publish","type":"post","link":"https:\/\/www.tun.com\/home\/new-polyether-electrolyte-could-transform-lithium-metal-batteries\/","title":{"rendered":"New Polyether Electrolyte Could Transform Lithium Metal Batteries"},"content":{"rendered":"\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-uagb-blockquote uagb-block-e7eb3fc3 uagb-blockquote__skin-border uagb-blockquote__stack-img-none\"><blockquote class=\"uagb-blockquote\"><div class=\"uagb-blockquote__content\">Scientists have engineered a new polymer electrolyte that lets lithium metal batteries operate safely at high voltages and in temperatures ranging from -40\u00b0C to 55\u00b0C \u2014 a potential breakthrough for electric vehicles, consumer electronics and beyond.<\/div><footer><div class=\"uagb-blockquote__author-wrap uagb-blockquote__author-at-left\"><\/div><\/footer><\/blockquote><\/div>\n\n\n\n<div class=\"wp-block-group is-content-justification-space-between is-nowrap is-layout-flex wp-container-core-group-is-layout-b0ffac9c wp-block-group-is-layout-flex\"><div style=\"font-size:16px\" class=\"has-text-align-left wp-block-post-author\"><div class=\"wp-block-post-author__content\"><p class=\"wp-block-post-author__name\">The University Network<\/p><\/div><\/div>\n\n\n<div class=\"wp-block-uagb-social-share uagb-social-share__outer-wrap uagb-social-share__layout-horizontal uagb-block-ee584a31\">\n<div class=\"wp-block-uagb-social-share-child uagb-ss-repeater uagb-ss__wrapper uagb-block-ec619ce7\"><span class=\"uagb-ss__link\" data-href=\"https:\/\/www.facebook.com\/sharer.php?u=\" tabindex=\"0\" role=\"button\" aria-label=\"facebook\"><span class=\"uagb-ss__source-wrap\"><span class=\"uagb-ss__source-icon\"><svg xmlns=\"https:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\"><path d=\"M504 256C504 119 393 8 256 8S8 119 8 256c0 123.8 90.69 226.4 209.3 245V327.7h-63V256h63v-54.64c0-62.15 37-96.48 93.67-96.48 27.14 0 55.52 4.84 55.52 4.84v61h-31.28c-30.8 0-40.41 19.12-40.41 38.73V256h68.78l-11 71.69h-57.78V501C413.3 482.4 504 379.8 504 256z\"><\/path><\/svg><\/span><\/span><\/span><\/div>\n\n\n\n<div class=\"wp-block-uagb-social-share-child uagb-ss-repeater uagb-ss__wrapper uagb-block-32d99934\"><span class=\"uagb-ss__link\" data-href=\"https:\/\/twitter.com\/share?url=\" tabindex=\"0\" role=\"button\" aria-label=\"twitter\"><span class=\"uagb-ss__source-wrap\"><span class=\"uagb-ss__source-icon\"><svg xmlns=\"https:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\"><path d=\"M389.2 48h70.6L305.6 224.2 487 464H345L233.7 318.6 106.5 464H35.8L200.7 275.5 26.8 48H172.4L272.9 180.9 389.2 48zM364.4 421.8h39.1L151.1 88h-42L364.4 421.8z\"><\/path><\/svg><\/span><\/span><\/span><\/div>\n\n\n\n<div class=\"wp-block-uagb-social-share-child uagb-ss-repeater uagb-ss__wrapper uagb-block-1d136f14\"><span class=\"uagb-ss__link\" data-href=\"https:\/\/www.linkedin.com\/shareArticle?url=\" tabindex=\"0\" role=\"button\" aria-label=\"linkedin\"><span class=\"uagb-ss__source-wrap\"><span class=\"uagb-ss__source-icon\"><svg xmlns=\"https:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 448 512\"><path d=\"M416 32H31.9C14.3 32 0 46.5 0 64.3v383.4C0 465.5 14.3 480 31.9 480H416c17.6 0 32-14.5 32-32.3V64.3c0-17.8-14.4-32.3-32-32.3zM135.4 416H69V202.2h66.5V416zm-33.2-243c-21.3 0-38.5-17.3-38.5-38.5S80.9 96 102.2 96c21.2 0 38.5 17.3 38.5 38.5 0 21.3-17.2 38.5-38.5 38.5zm282.1 243h-66.4V312c0-24.8-.5-56.7-34.5-56.7-34.6 0-39.9 27-39.9 54.9V416h-66.4V202.2h63.7v29.2h.9c8.9-16.8 30.6-34.5 62.9-34.5 67.2 0 79.7 44.3 79.7 101.9V416z\"><\/path><\/svg><\/span><\/span><\/span><\/div>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">A research team at South China Normal University has created a cross-linked polymer electrolyte that tackles some of the most stubborn obstacles standing between today&#8217;s batteries and tomorrow&#8217;s high-energy storage systems. <a href=\"https:\/\/www.sciencedirect.com\/science\/article\/pii\/S305099552500025X?via%3Dihub\" target=\"_blank\" rel=\"noopener\" title=\"\">Published<\/a> in <em>eScience Energy<\/em>, the study outlines a three-part molecular design strategy that simultaneously improves oxidation stability, ion transport speed, and electrode protection \u2014 without requiring battery manufacturers to retool their production lines.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Why Current Batteries Fall Short<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Lithium metal batteries hold enormous promise for packing more energy into less space, which matters for everything from longer-range electric vehicles to thinner laptops. The problem is that conventional liquid electrolytes are flammable and trigger side reactions that eat away at battery life. Solid-state polymer alternatives are safer, but they have historically struggled with poor contact at electrode surfaces, sluggish ion movement, and a tendency to break down at voltages above 4 volts \u2014 well below what next-generation batteries need.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Existing polymer systems based on a compound called 1,3-dioxolane are especially vulnerable: they degrade quickly when paired with high-voltage cathodes and lose performance rapidly in cold weather. The molecular architecture simply hasn&#8217;t been up to the task.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">The Trilogy Approach<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">To crack these interconnected problems, the South China Normal University team built what they call a &#8220;trilogy&#8221; strategy \u2014 three coordinated molecular-level decisions that each address a separate weakness.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The first move was swapping out the standard monomer for tetrahydrofuran (THF), which carries a higher ratio of carbon to oxygen atoms. That structural shift pushed the electrolyte&#8217;s oxidation stability up to 4.9 volts, making it compatible with the high-voltage cathodes that energy-dense batteries demand.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Next, the researchers added ethylene glycol diglycidyl ether (GDE) as a cross-linking agent. GDE stitches the polymer chains into a three-dimensional network loaded with oxygen sites, giving lithium ions more places to hop as they travel through the material. The result: ionic conductivity of 3.3 mS\/cm at room temperature, among the highest figures reported for this class of polymer electrolyte.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The third piece involved lithium difluoro(oxalato)borate (LiDFOB), which the team used not just as a salt but as a polymerization initiator. As it kicks off the polymerization reaction, LiDFOB also breaks down to coat both electrodes in a thin, inorganic-rich protective layer containing lithium fluoride and boron-oxygen-fluorine compounds. That coating suppresses the parasitic reactions that normally degrade battery capacity over time.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">&#8220;We realized that simply designing a polymer with high oxidation stability usually means sacrificing ionic conductivity,&#8221; the authors said in a news release. &#8220;That&#8217;s why we introduced the cross-linker\u2014to add back the hopping sites for lithium ions without compromising voltage stability. The real surprise came from LiDFOB: it doesn&#8217;t just start the polymerization, it builds a protective armor on both electrodes. This combined strategy finally breaks the trade-off between stability and conductivity. And because our process uses in-situ polymerization, battery manufacturers won&#8217;t need to overhaul their production lines\u2014it&#8217;s a drop-in solution that works with existing equipment.&#8221;<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">Batteries built with the new electrolyte and high-nickel NCM811 or lithium cobalt oxide cathodes cycled stably at a 4.5-volt cutoff for hundreds of charge-discharge cycles with minimal capacity fade \u2014 a performance benchmark that has historically been out of reach for polymer systems.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Why It Matters for Students and Young Professionals<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">For the generation that grew up with smartphones and is now watching electric vehicles go mainstream, this kind of battery research has direct practical stakes. Range anxiety in cold climates is one of the most cited barriers to EV adoption, and this electrolyte&#8217;s ability to function from -40 degrees Celsius to 55 degrees Celsius without extra heating or cooling hardware could meaningfully reduce that concern. The same temperature resilience makes the technology relevant for electric vertical take-off and landing (eVTOL) aircraft \u2014 a sector attracting significant investment and recruiting engineering talent \u2014 as well as grid-scale energy storage that supports renewable power.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Critically, the in-situ polymerization process means the electrolyte forms inside the battery cell from liquid precursors, achieving excellent contact with electrode surfaces while remaining compatible with existing lithium-ion manufacturing equipment. That compatibility shortens the gap between a laboratory result and a product on store shelves, which is often where promising battery chemistries stall.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The team says future work will refine the cross-linker chemistry and interphase composition, and the design principles could eventually be adapted for sodium-ion or lithium-sulfur battery systems, widening the potential impact considerably.<\/p>\n\n\n\n<div style=\"height:8px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"source-attribution wp-block-paragraph\"><strong>Source: <\/strong><a href=\"https:\/\/www.eurekalert.org\/news-releases\/1131319\" target=\"_blank\" rel=\"nofollow noopener\">KeAi Communications Co., Ltd.<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Scientists have engineered a new polymer electrolyte that lets lithium metal batteries operate safely at high voltages and in temperatures 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