{"id":73864,"date":"2026-02-26T11:56:29","date_gmt":"2026-02-26T11:56:29","guid":{"rendered":"https:\/\/youzum.net\/this-company-claims-a-battery-breakthrough-now-they-need-to-prove-it\/"},"modified":"2026-02-26T11:56:29","modified_gmt":"2026-02-26T11:56:29","slug":"this-company-claims-a-battery-breakthrough-now-they-need-to-prove-it","status":"publish","type":"post","link":"https:\/\/youzum.net\/es\/this-company-claims-a-battery-breakthrough-now-they-need-to-prove-it\/","title":{"rendered":"This company claims a battery breakthrough. Now they need to prove it."},"content":{"rendered":"

When a company claims to have created what\u2019s essentially the holy grail of batteries, there are bound to be some questions.<\/p>\n

Interest has been swirling since Donut Lab, a Finnish company, announced last month that it had a new solid-state battery technology, one that was ready for large-scale production. The company said its batteries can charge super-fast and have a high energy density that would translate to ultra-long-range EVs. What\u2019s more, it claimed the cells can operate safely in the extreme heat and cold, contain \u201cgreen and abundant materials,\u201d and would cost less than lithium-ion batteries do today.<\/p>\n

It sounded amazing\u2014this sort of technology could transform the EV industry. But many quickly wondered if it was all too good to be true. Now, Donut Lab is releasing a series of videos that it says will prove its technology has the secret sauce. Let\u2019s dig into why this company is making news, why many experts are skeptical, and what it all means for the battery industry right now.<\/p>\n

Solid-state batteries could deliver the next generation of EVs. In place of a liquid electrolyte (the material that ions move through inside a battery), the cells use a solid material, so they can be more compact. That means a significantly longer range, which could get more people excited to drive EVs.<\/p>\n

The problem is, getting these batteries to work and making them at the large scale required for the EV industry hasn\u2019t been a simple task. Some of the world\u2019s most powerful automakers and battery companies have been trying for years to get the technology off the ground. (Toyota at one point said it would have solid-state batteries in cars by 2020. Now it\u2019s shooting for 2027 or 2028.)<\/p>\n

While it\u2019s been a long time coming, it does feel as if solid-state batteries are closer than ever. Much of the progress so far has been on semi-solid-state batteries, which use materials like gels for electrolytes. But some companies, including several in China, are getting closer to true solid state. The world\u2019s largest battery company, CATL, plans to manufacture small quantities in 2027. Another major Chinese automaker, Changan, plans to start testing installation of all-solid-state batteries in vehicles this year, with mass production expected to begin next year.<\/p>\n

Still, Donut Lab surprised the battery industry when, in a video<\/a> released in early January ahead of the Consumer Electronics Show in Las Vegas, the company claimed it would put the world\u2019s first all-solid-state battery into production vehicles.<\/p>\n

One of the splashiest claims in the announcement was that cells would have an energy density of 400 watt-hours per kilogram (the top commercial lithium-ion batteries today sit at about 250 to 300 Wh\/kg). It was also claimed that the cells could charge in as little as five minutes, last 100,000 cycles, and retain 99% of capacity at high and low temperatures\u2014while costing less than lithium-ion cells and being made from \u201c100% green and abundant materials with global availability.\u201d<\/p>\n

Many experts were immediately skeptical. \u201cIn the solid-state field, the technical barriers are very high,\u201d said Shirley Meng, a professor of molecular engineering at the University of Chicago, when I spoke with her last month. She\u2019d recently attended CES and visited Donut Lab\u2019s booth. \u201cThey had zero demo, so I don\u2019t believe it,\u201d she says. \u201cCall me conservative, but I would rather be careful than be sorry later.\u201d<\/p>\n

\u201cIt\u2019s one of those things where nobody knows\u2014they\u2019ve never heard of it,\u201d said Eric Wachsman, a professor at the University of Maryland and cofounder of the solid-state battery company Ion Storage Systems, in a January interview. \u201cThey came out of nowhere.\u201d<\/p>\n

Donut Lab has shared very little about what, exactly, this technology might be. It\u2019s not uncommon for battery companies (or any startup, for that matter) to be quiet about technical details before they can get patents filed to protect their technology. But the combination of claims didn\u2019t seem to line up with any known chemistries, leaving experts speculating<\/a> and, in many cases, doubting<\/a> Donut Lab\u2019s claims.<\/p>\n

\u201cAll the parameters are contradictory,\u201d said Yang Hongxin, chairman and CEO of the Chinese battery giant Svolt Energy, in remarks<\/a> to news outlets in January. For example, there\u2019s often a trade-off between high energy density, which requires thicker electrodes that can store more energy, and fast charging, which requires ions to move quickly through cells. High-performance batteries are also expected to be costly, but Donut Lab claims its technology will be cheaper than lithium-ion technology.\u00a0<\/p>\n

In a new video released last week, Donut Lab cofounder and CEO Marko Lehtim\u00e4ki announced the company would be releasing a video series, called \u201cI Donut Believe,\u201d that would provide evidence for their claims. As a header on the accompanying website<\/a> reads: \u201cFair enough. Here you go.\u201d<\/p>\n

When the website went up last week, it included a countdown timer to Monday February 23, when the company released results from its first third-party testing:<\/a> a fast charging test. The test showed that a single cell could charge from 0% to 80% capacity in about four and a half minutes\u2014incredibly quick and quite impressive results. (One potential caveat to note is that the cells heated up quite a bit, so thermal management could be important in designing vehicles that use these batteries.)<\/p>\n

Even as we see the first technical test results, I\u2019m still left with a lot of questions. How many cycles could this battery do at this charging speed? Can this same cell meet the company\u2019s other performance claims? (I\u2019ve reached out to Donut Lab several times over the past month, both to the company\u2019s press email and to leadership on LinkedIn, but I haven\u2019t gotten a response yet.)<\/p>\n

The company has certainly drummed up a lot of interest and attention with its rollout, and the theatrics aren\u2019t over yet. There\u2019s another countdown timer<\/a> on Donut Lab\u2019s site, which ends on Monday, March 2.<\/p>\n

I\u2019m the first one to get excited about a new battery technology. But there\u2019s a sentiment I\u2019ve seen pop up a lot recently online, and one I can\u2019t get out of my head as I continue to follow this story: \u201cExtraordinary claims require extraordinary proof.\u201d<\/p>\n

This article is from The Spark, <\/em>MIT Technology Review\u2019s weekly climate newsletter. To receive it in your inbox every Wednesday, <\/em>sign up here<\/em><\/a>.<\/em><\/p>","protected":false},"excerpt":{"rendered":"

When a company claims to have created what\u2019s essentially the holy grail of batteries, there are bound to be some questions. Interest has been swirling since Donut Lab, a Finnish company, announced last month that it had a new solid-state battery technology, one that was ready for large-scale production. The company said its batteries can charge super-fast and have a high energy density that would translate to ultra-long-range EVs. What\u2019s more, it claimed the cells can operate safely in the extreme heat and cold, contain \u201cgreen and abundant materials,\u201d and would cost less than lithium-ion batteries do today. It sounded amazing\u2014this sort of technology could transform the EV industry. But many quickly wondered if it was all too good to be true. Now, Donut Lab is releasing a series of videos that it says will prove its technology has the secret sauce. Let\u2019s dig into why this company is making news, why many experts are skeptical, and what it all means for the battery industry right now. Solid-state batteries could deliver the next generation of EVs. In place of a liquid electrolyte (the material that ions move through inside a battery), the cells use a solid material, so they can be more compact. That means a significantly longer range, which could get more people excited to drive EVs. The problem is, getting these batteries to work and making them at the large scale required for the EV industry hasn\u2019t been a simple task. Some of the world\u2019s most powerful automakers and battery companies have been trying for years to get the technology off the ground. (Toyota at one point said it would have solid-state batteries in cars by 2020. Now it\u2019s shooting for 2027 or 2028.) While it\u2019s been a long time coming, it does feel as if solid-state batteries are closer than ever. Much of the progress so far has been on semi-solid-state batteries, which use materials like gels for electrolytes. But some companies, including several in China, are getting closer to true solid state. The world\u2019s largest battery company, CATL, plans to manufacture small quantities in 2027. Another major Chinese automaker, Changan, plans to start testing installation of all-solid-state batteries in vehicles this year, with mass production expected to begin next year. Still, Donut Lab surprised the battery industry when, in a video released in early January ahead of the Consumer Electronics Show in Las Vegas, the company claimed it would put the world\u2019s first all-solid-state battery into production vehicles. One of the splashiest claims in the announcement was that cells would have an energy density of 400 watt-hours per kilogram (the top commercial lithium-ion batteries today sit at about 250 to 300 Wh\/kg). It was also claimed that the cells could charge in as little as five minutes, last 100,000 cycles, and retain 99% of capacity at high and low temperatures\u2014while costing less than lithium-ion cells and being made from \u201c100% green and abundant materials with global availability.\u201d Many experts were immediately skeptical. \u201cIn the solid-state field, the technical barriers are very high,\u201d said Shirley Meng, a professor of molecular engineering at the University of Chicago, when I spoke with her last month. She\u2019d recently attended CES and visited Donut Lab\u2019s booth. \u201cThey had zero demo, so I don\u2019t believe it,\u201d she says. \u201cCall me conservative, but I would rather be careful than be sorry later.\u201d \u201cIt\u2019s one of those things where nobody knows\u2014they\u2019ve never heard of it,\u201d said Eric Wachsman, a professor at the University of Maryland and cofounder of the solid-state battery company Ion Storage Systems, in a January interview. \u201cThey came out of nowhere.\u201d Donut Lab has shared very little about what, exactly, this technology might be. It\u2019s not uncommon for battery companies (or any startup, for that matter) to be quiet about technical details before they can get patents filed to protect their technology. But the combination of claims didn\u2019t seem to line up with any known chemistries, leaving experts speculating and, in many cases, doubting Donut Lab\u2019s claims. \u201cAll the parameters are contradictory,\u201d said Yang Hongxin, chairman and CEO of the Chinese battery giant Svolt Energy, in remarks to news outlets in January. For example, there\u2019s often a trade-off between high energy density, which requires thicker electrodes that can store more energy, and fast charging, which requires ions to move quickly through cells. High-performance batteries are also expected to be costly, but Donut Lab claims its technology will be cheaper than lithium-ion technology.\u00a0 In a new video released last week, Donut Lab cofounder and CEO Marko Lehtim\u00e4ki announced the company would be releasing a video series, called \u201cI Donut Believe,\u201d that would provide evidence for their claims. As a header on the accompanying website reads: \u201cFair enough. Here you go.\u201d When the website went up last week, it included a countdown timer to Monday February 23, when the company released results from its first third-party testing: a fast charging test. The test showed that a single cell could charge from 0% to 80% capacity in about four and a half minutes\u2014incredibly quick and quite impressive results. (One potential caveat to note is that the cells heated up quite a bit, so thermal management could be important in designing vehicles that use these batteries.) Even as we see the first technical test results, I\u2019m still left with a lot of questions. How many cycles could this battery do at this charging speed? Can this same cell meet the company\u2019s other performance claims? (I\u2019ve reached out to Donut Lab several times over the past month, both to the company\u2019s press email and to leadership on LinkedIn, but I haven\u2019t gotten a response yet.) The company has certainly drummed up a lot of interest and attention with its rollout, and the theatrics aren\u2019t over yet. There\u2019s another countdown timer on Donut Lab\u2019s site, which ends on Monday, March 2. I\u2019m the first one to get excited about a new battery technology. But there\u2019s a sentiment I\u2019ve seen pop up a lot recently online, and<\/p>","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"pmpro_default_level":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"_pvb_checkbox_block_on_post":false,"footnotes":""},"categories":[52,5,7,1],"tags":[],"class_list":["post-73864","post","type-post","status-publish","format-standard","hentry","category-ai-club","category-committee","category-news","category-uncategorized","pmpro-has-access"],"acf":[],"yoast_head":"\nThis company claims a battery breakthrough. 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Now they need to prove it."}]},{"@type":"WebSite","@id":"https:\/\/yousum.gpucore.co\/#website","url":"https:\/\/yousum.gpucore.co\/","name":"YouSum","description":"","publisher":{"@id":"https:\/\/yousum.gpucore.co\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/yousum.gpucore.co\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"es"},{"@type":"Organization","@id":"https:\/\/yousum.gpucore.co\/#organization","name":"Drone Association Thailand","url":"https:\/\/yousum.gpucore.co\/","logo":{"@type":"ImageObject","inLanguage":"es","@id":"https:\/\/yousum.gpucore.co\/#\/schema\/logo\/image\/","url":"https:\/\/youzum.net\/wp-content\/uploads\/2024\/11\/tranparent-logo.png","contentUrl":"https:\/\/youzum.net\/wp-content\/uploads\/2024\/11\/tranparent-logo.png","width":300,"height":300,"caption":"Drone Association Thailand"},"image":{"@id":"https:\/\/yousum.gpucore.co\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/DroneAssociationTH\/"]},{"@type":"Person","@id":"https:\/\/yousum.gpucore.co\/#\/schema\/person\/97fa48242daf3908e4d9a5f26f4a059c","name":"admin NU","image":{"@type":"ImageObject","inLanguage":"es","@id":"https:\/\/yousum.gpucore.co\/#\/schema\/person\/image\/","url":"https:\/\/youzum.net\/wp-content\/uploads\/avatars\/2\/1746849356-bpfull.png","contentUrl":"https:\/\/youzum.net\/wp-content\/uploads\/avatars\/2\/1746849356-bpfull.png","caption":"admin NU"},"url":"https:\/\/youzum.net\/es\/members\/adminnu\/"}]}},"rttpg_featured_image_url":null,"rttpg_author":{"display_name":"admin NU","author_link":"https:\/\/youzum.net\/es\/members\/adminnu\/"},"rttpg_comment":0,"rttpg_category":"<a href=\"https:\/\/youzum.net\/es\/category\/ai-club\/\" rel=\"category tag\">AI<\/a> <a href=\"https:\/\/youzum.net\/es\/category\/committee\/\" rel=\"category tag\">Committee<\/a> <a href=\"https:\/\/youzum.net\/es\/category\/news\/\" rel=\"category tag\">News<\/a> <a href=\"https:\/\/youzum.net\/es\/category\/uncategorized\/\" rel=\"category tag\">Uncategorized<\/a>","rttpg_excerpt":"When a company claims to have created what\u2019s essentially the holy grail of batteries, there are bound to be some questions. Interest has been swirling since Donut Lab, a Finnish company, announced last month that it had a new solid-state battery technology, one that was ready for large-scale production. The company said its batteries can…","_links":{"self":[{"href":"https:\/\/youzum.net\/es\/wp-json\/wp\/v2\/posts\/73864","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/youzum.net\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/youzum.net\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/youzum.net\/es\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/youzum.net\/es\/wp-json\/wp\/v2\/comments?post=73864"}],"version-history":[{"count":0,"href":"https:\/\/youzum.net\/es\/wp-json\/wp\/v2\/posts\/73864\/revisions"}],"wp:attachment":[{"href":"https:\/\/youzum.net\/es\/wp-json\/wp\/v2\/media?parent=73864"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/youzum.net\/es\/wp-json\/wp\/v2\/categories?post=73864"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/youzum.net\/es\/wp-json\/wp\/v2\/tags?post=73864"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}