• Login
    View Item 
    •   Home
    • Research
    • Articles
    • View Item
    •   Home
    • Research
    • Articles
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of KAUSTCommunitiesIssue DateSubmit DateThis CollectionIssue DateSubmit Date

    My Account

    Login

    Quick Links

    Open Access PolicyORCID LibguideTheses and Dissertations LibguideSubmit an Item

    Statistics

    Display statistics

    A general strategy for the fabrication of high performance microsupercapacitors

    • CSV
    • RefMan
    • EndNote
    • BibTex
    • RefWorks
    Thumbnail
    Name:
    1-s2.0-S2211285515002475-main.pdf
    Size:
    3.072Mb
    Format:
    PDF
    Description:
    Accepted Manuscript
    Download
    Thumbnail
    Name:
    1-s2.0-S2211285515002475-fx1.jpg
    Size:
    23.93Kb
    Format:
    JPEG image
    Description:
    Graphical abstract
    Image viewer
    Download
    Type
    Article
    Authors
    Kurra, Narendra cc
    Jiang, Qiu cc
    Alshareef, Husam N. cc
    KAUST Department
    Functional Nanomaterials and Devices Research Group
    Material Science and Engineering Program
    Physical Science and Engineering (PSE) Division
    Date
    2015-06-06
    Online Publication Date
    2015-06-06
    Print Publication Date
    2015-09
    Permanent link to this record
    http://hdl.handle.net/10754/556515
    
    Metadata
    Show full item record
    Abstract
    We propose a generic strategy for microsupercapacitor fabrication that integrates layers of reduced graphene oxide (rGO) and pseudocapacitive materials to create electrode heterostructures with significantly improved cycling stability and performance. Our approach involves a combination of photolithography and a simple transfer method of free-standing reduced graphene oxide film onto an Au/patterned photoresist bilayer. The resulting stack (rGO/Au/patterned resist/substrate) is then used for the electrochemical deposition of various pseudocapacitive materials before the final step of lift-off. To prove the viability of this method, we have successfully fabricated microsupercapacitors (MSCs) with the following interdigitated electrode heterostructures: MnO2/rGO, Co(OH)2/rGO and PANI/rGO. These MSCs show better performance and cycling stability compared to the single layer, (i.e., rGO-free) counterparts. The interdigitated electrode heterostructures result in MSCs with energy densities in the range of 3–12 mW h/cm3 and power densities in the range of 400–1200 mW/cm3, which is superior to the Li thin film batteries (E=10 mW h/cm3), carbon, and metal oxide based MSCs (E=1–6 mW h/cm3) while device energy densities are in the range of 1.3–5.3 mW h/cm3, corresponding power densities are in the range of 178–533 mW/cm3. These results can be explained by a facilitated nucleation model, where surface topology of the rGO film creates a favorable environment for the nucleation and growth of pseudocapacitive materials with strong interfacial contacts and enhanced surface area. This approach opens up a new avenue in fabricating MSCs involving a variety of heterostructures combining electrical double layer carbon type with Faradaic pseudocapacitive materials for enhanced electrochemical performance.
    Citation
    A general strategy for the fabrication of high performance microsupercapacitors 2015 Nano Energy
    Publisher
    Elsevier BV
    Journal
    Nano Energy
    DOI
    10.1016/j.nanoen.2015.05.031
    Additional Links
    http://linkinghub.elsevier.com/retrieve/pii/S2211285515002475
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.nanoen.2015.05.031
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Material Science and Engineering Program

    entitlement

     
    DSpace software copyright © 2002-2022  DuraSpace
    Quick Guide | Contact Us | KAUST University Library
    Open Repository is a service hosted by 
    Atmire NV
     

    Export search results

    The export option will allow you to export the current search results of the entered query to a file. Different formats are available for download. To export the items, click on the button corresponding with the preferred download format.

    By default, clicking on the export buttons will result in a download of the allowed maximum amount of items. For anonymous users the allowed maximum amount is 50 search results.

    To select a subset of the search results, click "Selective Export" button and make a selection of the items you want to export. The amount of items that can be exported at once is similarly restricted as the full export.

    After making a selection, click one of the export format buttons. The amount of items that will be exported is indicated in the bubble next to export format.