Flower like AlOOH/CoO(OH) nanocomposite electrode delivering superior supercapacitor performance

Flower like AlOOH/CoO(OH) nanocomposite electrode delivering superior supercapacitor performance | 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 Research Article Flower like AlOOH/CoO(OH) nanocomposite electrode delivering superior supercapacitor performance Priyanka Maurya, Suneel Kumar Sharma, S. N. Pandey This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-7494694/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 01 Feb, 2026 Read the published version in Discover Nano → Version 1 posted 16 You are reading this latest preprint version Abstract In this research, aluminum/cobalt oxy-hydroxide (CoAl) thin films were successfully deposited using the layer-by-layer (LbL) method at RT. CoAl nanocomposites were grown on a stainless-steel substrate for 10, 20, and 30 LbL cycles. The structural analysis of CoAl was performed using X-ray diffraction analysis. The FESEM analysis revealed a three-dimensional flower-like porous nanostructure of the composite. A three-electrode system was employed for electrochemical testing, with the produced AlOOH/CoO(OH) binary composite acting as the working electrode. The electrochemical characteristics of the CoAl samples were analysed in a 1M KOH aqueous electrolyte. Among 10, 20, and 30 LbL cycles, the 20 LbL cycles nanocomposite exhibited the outstanding specific capacity of 2421 C g-1 @ 5 mV s-1 within a potential range of 1.4 V. The nanocomposite exhibits pseudocapacitive battery-type behaviour. The remarkable electrochemical activity of the 20 LbL nanocomposite can be ascribed to the lower resistances identified in the sample through EIS analysis and the high surface area of the interconnected nanosheets that form a porous, nano flower-like structure. The combination of AlOOH with CoO(OH) contributes to an improvement in its charge storage capability. Supercapacitor Energy storage LbL method AlOOH/CoO(OH) nanocomposite Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Published Journal Publication published 01 Feb, 2026 Read the published version in Discover Nano → Version 1 posted Editorial decision: Revision requested 26 Nov, 2025 Reviews received at journal 25 Nov, 2025 Reviews received at journal 19 Nov, 2025 Reviews received at journal 16 Nov, 2025 Reviews received at journal 15 Nov, 2025 Reviews received at journal 11 Nov, 2025 Reviewers agreed at journal 09 Nov, 2025 Reviewers agreed at journal 09 Nov, 2025 Reviewers agreed at journal 09 Nov, 2025 Reviewers agreed at journal 08 Nov, 2025 Reviewers agreed at journal 07 Nov, 2025 Reviewers agreed at journal 07 Nov, 2025 Reviewers invited by journal 07 Nov, 2025 Editor assigned by journal 03 Oct, 2025 Submission checks completed at journal 17 Sep, 2025 First submitted to journal 17 Sep, 2025 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. 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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-7494694","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":546346934,"identity":"cafd46e8-79e6-41fc-946c-4e84200b8ed9","order_by":0,"name":"Priyanka Maurya","email":"","orcid":"","institution":"Motilal Nehru National Institute of Technology Allahabad","correspondingAuthor":false,"prefix":"","firstName":"Priyanka","middleName":"","lastName":"Maurya","suffix":""},{"id":546346935,"identity":"b556573c-fc28-4933-8cf0-0ea3821f790a","order_by":1,"name":"Suneel Kumar Sharma","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA+klEQVRIiWNgGAWjYNCCAgk5foaDDQc+ANls7ERpMbAwlmw83HhwBkgLM3FaKhI3HD7efJgHxCGkRX5G7sEHHwwkEjccO9hw2ObXNnk+ZgbGDx9z8Jh/Iy/ZcIaBhPHMM0AtuX23DduYGZglZ27Do0Uix0yax0BCtu8GSEvPbUagFjZmXjxa5GfkmP/+YyDB2HD/YcNhy57b9gS1MNzIMWMG2qU44QDQFoYftxMJajE488ZYsgfoF8mGgw0HextuJ7cxMzbj9Yt8e47hhx8VdcCoPP74w48/t23ntzcf/PARn8NQAGMbmGwgVj0I/CFF8SgYBaNgFIwUAADfLFmXr4+SowAAAABJRU5ErkJggg==","orcid":"","institution":"Motilal Nehru National Institute of Technology Allahabad","correspondingAuthor":true,"prefix":"","firstName":"Suneel","middleName":"Kumar","lastName":"Sharma","suffix":""},{"id":546346936,"identity":"ac58e7d3-1cf8-427a-9cc4-b3058247aaf3","order_by":2,"name":"S. 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