--- title: New device captures carbon dioxide by pumping it across... description: Researchers led by James Buchen at the University of Delaware developed an electrochemical carbon-capture device that uses a nickel hydroxide battery-like cell... canonical: https://daily.dev/posts/new-device-captures-carbon-dioxide-by-pumping-it-across-a-battery-o1sy0ofdt twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: New device captures carbon dioxide by pumping it across a battery | daily.dev og:description: Researchers led by James Buchen at the University of Delaware developed an electrochemical carbon-capture device that uses a nickel hydroxide battery-like cell... og:url: https://daily.dev/posts/new-device-captures-carbon-dioxide-by-pumping-it-across-a-battery-o1sy0ofdt og:image: https://api.daily.dev/og/posts/o1Sy0oFDT.png og:image:alt: New device captures carbon dioxide by pumping it across a battery og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # New device captures carbon dioxide by pumping it across a battery **[Ars Technica](https://daily.dev/sources/arstechnica)** · 2 min read · 0 upvotes · 0 comments ## Summary Researchers led by James Buchen at the University of Delaware developed an electrochemical carbon-capture device that uses a nickel hydroxide battery-like cell to grab CO2 from air or smokestacks. Hydroxide produced at the cathode reacts with CO2 to form carbonate, which crosses a separator membrane to the anode where it reverts to CO2 gas; reversing the applied voltage swaps the electrode roles, continuously cycling CO2 capture. The approach is claimed to require less energy than conventional reversible-filter carbon capture systems, potentially lowering costs. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### How does the new battery-based carbon capture device work? It uses a cell with nickel hydroxide electrodes on both sides, similar to nickel-metal hydride battery chemistry. Hydroxide generated at the cathode reacts with CO2 to form carbonate or bicarbonate, which passes through a separator membrane to the anode, where lower pH reverses the reaction and releases CO2 gas. Reversing the applied voltage swaps which electrode acts as cathode versus anode, letting the same cell run continuously. _Engineers tracking energy-efficient carbon capture breakthroughs can follow developments like this on daily.dev._ ### Why might electrochemical carbon capture be cheaper than traditional filter-based systems? It requires less energy than current reversible-filter designs, which typically rely on heating a CO2-loaded absorbent material to release the captured gas. Using an applied voltage to drive hydroxide production and carbonate conversion instead of heat-based regeneration can lower the overall energy input needed per unit of CO2 captured, which translates into lower operating costs. _Anyone comparing emerging carbon capture approaches can keep up with the research on daily.dev._ ## Similar posts on daily.dev - [Developing innovative alternatives to conventional carbon capture methods](https://daily.dev/posts/developing-innovative-alternatives-to-conventional-carbon-capture-methods-o8n9gelny) · MIT News · 0 upvotes · 0 comments - [Efficient method to capture carbon dioxide from the atmosphere developed at the University of Helsinki](https://daily.dev/posts/efficient-method-to-capture-carbon-dioxide-from-the-atmosphere-developed-at-the-university-of-helsin-wpyxybhk8) · Hacker News · 0 upvotes · 0 comments - [Carbon removal project supports Maine’s blue economy, broader marine health](https://daily.dev/posts/carbon-removal-project-supports-maine-s-blue-economy-broader-marine-health-71ejafnda) · MIT News · 0 upvotes · 0 comments - [Electric Approaches Reshape Carbon Capture Tech](https://daily.dev/posts/electric-approaches-reshape-carbon-capture-tech-w7ecnpk0u) · IEEE Spectrum · 0 upvotes · 0 comments - [DIY CO2 Scrubber In DIY Sub By A Hacker Braver Than Most](https://daily.dev/posts/diy-co2-scrubber-in-diy-sub-by-a-hacker-braver-than-most-8hf132zpf) · Hackaday · 0 upvotes · 0 comments --- Tags: [#climate-tech](https://daily.dev/tags/climate-tech) [View this post on daily.dev](https://daily.dev/posts/new-device-captures-carbon-dioxide-by-pumping-it-across-a-battery-o1sy0ofdt) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"New device captures carbon dioxide by pumping it across a battery","url":"https://daily.dev/posts/new-device-captures-carbon-dioxide-by-pumping-it-across-a-battery-o1sy0ofdt","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/new-device-captures-carbon-dioxide-by-pumping-it-across-a-battery-o1sy0ofdt"},"datePublished":"2026-09-28T20:38:45.186Z","dateModified":"2026-09-28T20:39:09.309Z","description":"Researchers led by James Buchen at the University of Delaware developed an electrochemical carbon-capture device that uses a nickel hydroxide battery-like cell...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/548b647e3b3651b37adf25355841387b?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/548b647e3b3651b37adf25355841387b?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"Ars Technica","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"Ars Technica","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/80883e0e48a34b5ebcf93777016cb3fe","url":"https://daily.dev/sources/arstechnica"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/new-device-captures-carbon-dioxide-by-pumping-it-across-a-battery-o1sy0ofdt","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"climate-tech","timeRequired":"PT2M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Ars Technica","item":"https://daily.dev/sources/arstechnica"},{"@type":"ListItem","position":3,"name":"New device captures carbon dioxide by pumping it across a battery"}]} {"@context":"https://schema.org","@type":"FAQPage","@id":"https://daily.dev/posts/new-device-captures-carbon-dioxide-by-pumping-it-across-a-battery-o1sy0ofdt#faq","mainEntity":[{"@type":"Question","name":"How does the new battery-based carbon capture device work?","acceptedAnswer":{"@type":"Answer","text":"It uses a cell with nickel hydroxide electrodes on both sides, similar to nickel-metal hydride battery chemistry. Hydroxide generated at the cathode reacts with CO2 to form carbonate or bicarbonate, which passes through a separator membrane to the anode, where lower pH reverses the reaction and releases CO2 gas. Reversing the applied voltage swaps which electrode acts as cathode versus anode, letting the same cell run continuously. Engineers tracking energy-efficient carbon capture breakthroughs can follow developments like this on daily.dev."}},{"@type":"Question","name":"Why might electrochemical carbon capture be cheaper than traditional filter-based systems?","acceptedAnswer":{"@type":"Answer","text":"It requires less energy than current reversible-filter designs, which typically rely on heating a CO2-loaded absorbent material to release the captured gas. Using an applied voltage to drive hydroxide production and carbonate conversion instead of heat-based regeneration can lower the overall energy input needed per unit of CO2 captured, which translates into lower operating costs. Anyone comparing emerging carbon capture approaches can keep up with the research on daily.dev."}}]} ```