Electrostatic–Mechanical Interaction Modeling in Structural Supercapacitors

Electrostatic–Mechanical Interaction Modeling in Structural Supercapacitors | 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 Electrostatic–Mechanical Interaction Modeling in Structural Supercapacitors Davood Peyrow Hedayati, Rafael Schelkow, Michael Kucher, Robert Böhm This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-6906124/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 Structural supercapacitors (SSCs) are multifunctional carbon fiber-reinforced composites that combine mechanical load-bearing capacity with energy storage functionality. However, the interplay between mechanical deformation and electrostatic charge storage remains insufficiently understood. This study presents a finite element modeling framework to investigate electro-mechanical interactions at the microscale in SSCs. The model captures how mechanical stress influences the spatial distribution of the electrostatic field within a representative fiber–electrolyte architecture. Results reveal a deformation-induced evolution of electric field morphology, particularly near fiber–separator interfaces, which in turn affects the local charge storage behavior. Although the overall capacitance is largely retained under compressive deformation, minor variations arise due to small changes in fiber proximity and field screening. Parametric studies demonstrate that fiber volume fraction and spatial arrangement play a significant role in specific capacitance, with optimized geometries enabling up to 20% improvement in charge storage. Furthermore, extending electrode length in the fiber-aligned direction enhances capacitance more effectively than increasing thickness due to electrostatic screening effects. This framework provides insights into the interplay between structural geometry and electrostatic performance, serving as a basis for the design of high-performance multifunctional composites. Structural Supercapacitors (SSC) Electrostatic–Mechanical Interactions Multiphysics Modeling Electric Field Screening Full Text Additional Declarations No competing interests reported. Supplementary Files GraphicalAbstractSSCElectrostatic.png 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-6906124","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":474652286,"identity":"9513d5ba-c101-4218-81d7-ce17f6499f9a","order_by":0,"name":"Davood Peyrow 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However, the interplay between mechanical deformation and electrostatic charge storage remains insufficiently understood. This study presents a finite element modeling framework to investigate electro-mechanical interactions at the microscale in SSCs. The model captures how mechanical stress influences the spatial distribution of the electrostatic field within a representative fiber\u0026ndash;electrolyte architecture. Results reveal a deformation-induced evolution of electric field morphology, particularly near fiber\u0026ndash;separator interfaces, which in turn affects the local charge storage behavior. Although the overall capacitance is largely retained under compressive deformation, minor variations arise due to small changes in fiber proximity and field screening. Parametric studies demonstrate that fiber volume fraction and spatial arrangement play a significant role in specific capacitance, with optimized geometries enabling up to 20% improvement in charge storage. 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