Soft X-ray Operando Spectroscopy for Gas-Evolving Electrocatalysis at 100 mA/cm2

Soft X-ray Operando Spectroscopy for Gas-Evolving Electrocatalysis at 100 mA/cm2 | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Article Soft X-ray Operando Spectroscopy for Gas-Evolving Electrocatalysis at 100 mA/cm 2 Luca D'Amario, Silvia Nappini, Elena Magnano, Ilargi Napal Azcona, and 1 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-6290166/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract Studying electroactive materials under real operating conditions is essential for their development. Gas-evolving electrocatalysis has traditionally been incompatible with operando techniques conducted in Ultra-High Vacuum. Herein, we present the first operando Soft X-ray spectroscopy investigation of an oxygen (O2) evolving reaction under high current density conditions (100 mA/cm2). To this end, we designed and operated an innovative flow cell, using the NiOOH oxygen evolving electrocatalyst as a test system. This breakthrough enables the design of new experiments capable of analyzing electroactive materials in industrially relevant working conditions. Physical sciences/Materials science/Materials for energy and catalysis/Electrocatalysis Physical sciences/Materials science/Techniques and instrumentation/Characterization and analytical techniques spectro-electrochemistry ultra high vacuum flow cell water oxidation Full Text Additional Declarations There is NO Competing Interest. Supplementary Files SupportinginfoSXASpaper.pdf Supplementary Information to the main manuscript Cite Share Download PDF Status: Posted Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-6290166","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":433104989,"identity":"94591d35-657e-4ebb-bd78-1aa6841cf669","order_by":0,"name":"Luca 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