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dc.contributor.authorKandambeth, Sharath
dc.contributor.authorJia, Jiangtao
dc.contributor.authorWu, Hao
dc.contributor.authorKale, Vinayak Swamirao
dc.contributor.authorParvatkar, Prakash Tukaram
dc.contributor.authorCzaban-Jozwiak, Justyna
dc.contributor.authorZhou, Sheng
dc.contributor.authorXu, Xiangming
dc.contributor.authorAmeur, Zied Ouled
dc.contributor.authorAbou-Hamad, Edy
dc.contributor.authorEmwas, Abdul-Hamid M.
dc.contributor.authorShekhah, Osama
dc.contributor.authorAlshareef, Husam N.
dc.contributor.authorEddaoudi, Mohamed
dc.date.accessioned2020-09-08T08:02:09Z
dc.date.available2020-09-08T08:02:09Z
dc.date.issued2020-09-02
dc.date.submitted2020-05-18
dc.identifier.citationKandambeth, S., Jia, J., Wu, H., Kale, V. S., Parvatkar, P. T., Czaban-Jóźwiak, J., … Eddaoudi, M. (2020). Covalent Organic Frameworks as Negative Electrodes for High-Performance Asymmetric Supercapacitors. Advanced Energy Materials, 2001673. doi:10.1002/aenm.202001673
dc.identifier.issn1614-6832
dc.identifier.issn1614-6840
dc.identifier.doi10.1002/aenm.202001673
dc.identifier.urihttp://hdl.handle.net/10754/665010
dc.description.abstractNew covalent organic frameworks (COFs), encompassing redox-functionalized moieties and an aza-fused π-conjugated system, are designed, synthesized, and deployed as negative electrodes in asymmetric supercapacitors (ASC), for the first time. The Hex-Aza-COFs are synthesized based on the solvothermal condensation reaction of cyclohexanehexone and redox-functionalized aromatic tetramines with benzoquinone (Hex-Aza-COF-2) or phenazine (Hex-Aza-COF-3). The redox-functionalized Hex-Aza-COFs show a specific capacitance of 585 F g−1 for Hex-Aza-COF-2 and 663 F g−1 for Hex-Aza-COF-3 in a three-electrode configuration. These values are the highest among reported COF materials and are comparable with state-of-the-art pseudocapacitive electrodes. The Hex-Aza-COFs exhibit a wide voltage window (0 to −1.0 V), which allow the construction of a two-electrode ASC device by combining them with RuO2. The complementary potential windows of Hex-Aza-COF-3 and RuO2 enable an asymmetric device with a high voltage window of 1.7 V. The RuO2//Hex-Aza-COF-3 ASC device achieves an energy density value of 23.3 W h kg−1 at a power density of 661.2 W kg−1. The newly developed negative COF materials open new prospects for the development of high-performance ASCs.
dc.description.sponsorshipS.K. and J. J. contributed equally to this work. This work was financially supported by King Abdullah University of Science and Technology (KAUST) under Award No. OSR-CRG2017-3379. The authors thank Mrinal K. Hota for his valuable help during the electrochemical experiments.
dc.publisherWiley
dc.relation.urlhttps://onlinelibrary.wiley.com/doi/abs/10.1002/aenm.202001673
dc.rightsArchived with thanks to Advanced Energy Materials
dc.titleCovalent Organic Frameworks as Negative Electrodes for High-Performance Asymmetric Supercapacitors
dc.typeArticle
dc.contributor.departmentAdvanced Membranes and Porous Materials CenterPhysical Science and Engineering DivisionFunctional Materials DesignDiscovery and Development Research Group (FMD<sup>3</sup>)King Abdullah University of Science and Technology (KAUST) Thuwal 23955–6900 Saudi Arabia
dc.contributor.departmentAdvanced Membranes and Porous Materials Research Center
dc.contributor.departmentChemical Science
dc.contributor.departmentChemical Science Program
dc.contributor.departmentCore LabsKing Abdullah University of Science and Technology (KAUST) Thuwal 23955–6900 Saudi Arabia
dc.contributor.departmentFunctional Materials Design, Discovery and Development (FMD3)
dc.contributor.departmentFunctional Nanomaterials and Devices Research Group
dc.contributor.departmentImaging and Characterization Core Lab
dc.contributor.departmentMaterial Science and Engineering Program
dc.contributor.departmentNMR
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalAdvanced Energy Materials
dc.rights.embargodate2021-09-02
dc.eprint.versionPost-print
dc.identifier.pages2001673
kaust.personKandambeth, Sharath
kaust.personJia, Jiangtao
kaust.personWu, Hao
kaust.personKale, Vinayak Swamirao
kaust.personParvatkar, Prakash Tukaram
kaust.personCzaban-Jozwiak, Justyna
kaust.personZhou, Sheng
kaust.personXu, Xiangming
kaust.personAmeur, Zied Ouled
kaust.personAbou-Hamad, Edy
kaust.personEmwas, Abdul-Hamid M.
kaust.personShekhah, Osama
kaust.personAlshareef, Husam N.
kaust.personEddaoudi, Mohamed
kaust.grant.numberOSR-CRG2017-3379
dc.date.accepted2020-07-04
dc.identifier.eid2-s2.0-85090059763
kaust.acknowledged.supportUnitOSR
dc.date.published-online2020-09-02
dc.date.published-print2020-10


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