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dc.contributor.authorZhang, Wenli
dc.contributor.authorJiang, Qiu
dc.contributor.authorLei, Yongjiu
dc.contributor.authorAlshareef, Husam N.
dc.date.accessioned2019-07-15T07:25:43Z
dc.date.available2019-07-15T07:25:43Z
dc.date.issued2019-05-17
dc.identifier.citationZhang, W., Jiang, Q., Lei, Y., & Alshareef, H. N. (2019). Wettability-Driven Assembly of Electrochemical Microsupercapacitors. ACS Applied Materials & Interfaces, 11(23), 20905–20914. doi:10.1021/acsami.9b05635
dc.identifier.doi10.1021/acsami.9b05635
dc.identifier.urihttp://hdl.handle.net/10754/656016
dc.description.abstractIn this work, we demonstrate a wettability-driven assembly (WDA) process of active particulate materials for microsupercapacitor (MSC) fabrication. Our process uses three-dimensional laser-scribed graphene (LSG), derived from polyimide, as a current collector. We exploit the drastic wettability difference between LSG and unconverted polyimide toward water to assemble various electrodes on the LSG collectors. The WDA process is demonstrated using porous carbon and RuO2 nanoparticles, which are spontaneously and selectively assembled onto the LSG finger electrodes. The MSCs assembled using the WDA process with porous carbon as active material deliver a much higher areal capacitance (41.2 mF cm–2) compared to MSCs using LSG-only electrodes (1.2 mF cm–2). Thus, they deliver a high areal energy density of 5.71 μWh cm–2 with an areal power density of 4.0 mW cm–2. The capacitance and energy density of these porous carbon MSCs outperform most recently reported carbon-based MSCs. In comparison, the MSCs assembled using the WDA process with RuO2 nanoparticles as active material deliver an areal capacitance of 70.3 mF cm–2 and an areal energy density of 9.71 μWh cm–2. All in all, the WDA process is green, simple, and well suited for the fabrication of MSCs using many types of active materials.
dc.description.sponsorshipThe research reported in this publication was supported by King Abdullah University of Science and Technology (KAUST). The authors acknowledge the Advanced Nanofabrication, Imaging and Characterization and Analytical Chemistry Core Laboratories at KAUST for the support.
dc.publisherAmerican Chemical Society (ACS)
dc.relation.urlhttp://pubs.acs.org/doi/10.1021/acsami.9b05635
dc.rightsThis document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Applied Materials & Interfaces, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see http://pubs.acs.org/doi/10.1021/acsami.9b05635.
dc.subjectlaser-scribed graphene
dc.subjectporous carbon
dc.subjectwettability
dc.subjectmicrosupercapacitor
dc.subjectruthenium dioxide
dc.subjectgraphene
dc.titleWettability-Driven Assembly of Electrochemical Microsupercapacitors
dc.typeArticle
dc.contributor.departmentFunctional Nanomaterials and Devices Research Group
dc.contributor.departmentMaterial Science and Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalACS Applied Materials & Interfaces
dc.rights.embargodate2020-05-17
dc.eprint.versionPost-print
kaust.personZhang, Wenli
kaust.personJiang, Qiu
kaust.personLei, Yongjiu
kaust.personAlshareef, Husam N.
refterms.dateFOA2019-07-16T11:35:50Z
kaust.acknowledged.supportUnitNanofabrication Core Lab
dc.date.published-online2019-05-17
dc.date.published-print2019-06-12


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