Vertical Graphene Arrays for AC Line-Filtering Capacitors

Vertical Graphene Arrays for AC Line-Filtering Capacitors | 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 Vertical Graphene Arrays for AC Line-Filtering Capacitors Jin Zhang, Shichen Xu, Yeye Wen, Zhuo Chen, Nannan Ji, Mingmao Wu, and 2 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-632738/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 High-frequency responsive electrochemical capacitor (EC), which can convert alternating current (AC) in the circuit to direct current (DC), is an ideal filtering capacitor with lightweight superiority to replace the bulky aluminum electrolytic capacitor (AEC). However, current electrodes are difficult to achieve high energy density and high-frequency response properties simultaneously, primarily due to the electrode structure dilemmas of maximizing the electrode area or accelerating the ion transport. Herein, strictly vertical graphene arrays (SVGAs) directly prepared by electric-field-assisted plasma enhanced chemical vapor deposition have been successfully designed as the main electrode material of ECs to ensure the ions rapidly adsorb/desorb within the richly available surface spaces. The SVGAs exhibit an excellent specific areal capacitance of 1.72 mF‧cm − 2 at Φ 120 = 80.6° even after 500,000 cycles in the aqueous ECs, which is far better than that of most quasi-vertical electrodes and carbon-related materials. Impressively, the output voltage could also be improved to 2.5 V when using the organic electrolyte, and an ultra-high energy density of 4.75 mF‧V 2 ‧cm − 2 at Φ 120 = 80.6° can also be handily achieved. Moreover, both aqueous and organic ECs-SVGAs can well smooth arbitrary AC waveforms into DC signals, indicating that ECs-SVGAs have colossal potentials to replace outmoded AECs. Electrochemistry Nanoscience Electrode Area Ion Transport Chemical Vapor Deposition Aluminum Electrolytic Capacitor Full Text Additional Declarations There is NO Competing Interest. Supplementary Files NatureCommunicationsSupportingInformationXusc.docx 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. 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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-632738","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":35465779,"identity":"e5e0ff4b-1786-4943-9821-42f6427064ca","order_by":0,"name":"Jin 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However, current electrodes are difficult to achieve high energy density and high-frequency response properties simultaneously, primarily due to the electrode structure dilemmas of maximizing the electrode area or accelerating the ion transport. Herein, strictly vertical graphene arrays (SVGAs) directly prepared by electric-field-assisted plasma enhanced chemical vapor deposition have been successfully designed as the main electrode material of ECs to ensure the ions rapidly adsorb/desorb within the richly available surface spaces. The SVGAs exhibit an excellent specific areal capacitance of 1.72 mF‧cm\u003csup\u003e\u0026minus;\u0026thinsp;2\u003c/sup\u003e at Φ\u003csub\u003e120\u003c/sub\u003e\u0026thinsp;=\u0026thinsp;80.6\u0026deg; even after 500,000 cycles in the aqueous ECs, which is far better than that of most quasi-vertical electrodes and carbon-related materials. 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Moreover, both aqueous and organic ECs-SVGAs can well smooth arbitrary AC waveforms into DC signals, indicating that ECs-SVGAs have colossal potentials to replace outmoded AECs.\u003c/p\u003e","manuscriptTitle":"Vertical Graphene Arrays for AC Line-Filtering Capacitors","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2021-07-06 17:33:05","doi":"10.21203/rs.3.rs-632738/v1","editorialEvents":[],"status":"published","journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true}}],"origin":"","ownerIdentity":"0f4a254f-91e8-4f6e-986a-45a604036471","owner":[],"postedDate":"July 6th, 2021","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"posted","subjectAreas":[{"id":5428912,"name":"Electrochemistry"},{"id":5428913,"name":"Nanoscience"}],"tags":[],"updatedAt":"2021-08-07T11:30:53+00:00","versionOfRecord":[],"versionCreatedAt":"2021-07-06 17:33:05","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-632738","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-632738","identity":"rs-632738","version":["v1"]},"buildId":"7rjqhiLT3MXkJMwkYKINL","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}