Realization of high performance flexible wire supercapacitors based on 3-dimensional NiCo2O4/Ni fibers

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dc.contributor.authorRamadoss, Ananthakumarko
dc.contributor.authorKang, Kyeong-Namko
dc.contributor.authorAhn, Hyo-Jinko
dc.contributor.authorKim, Sun-Iko
dc.contributor.authorRyu, Seung-Takko
dc.contributor.authorJang, Ji-Hyunko
dc.date.accessioned2016-07-05T07:50:46Z-
dc.date.available2016-07-05T07:50:46Z-
dc.date.created2016-04-27-
dc.date.created2016-04-27-
dc.date.issued2016-04-
dc.identifier.citationJOURNAL OF MATERIALS CHEMISTRY A, v.4, no.13, pp.4718 - 4727-
dc.identifier.issn2050-7488-
dc.identifier.urihttp://hdl.handle.net/10203/209217-
dc.description.abstractThe rapidly developing electronics industry is producing miniaturized electronic devices with flexible, portable and wearable characteristics, requiring high-performance miniature energy storage devices with flexible and light weight properties. Herein, we have successfully fabricated highly porous, binder free three-dimensional flower-like NiCo2O4/Ni nanostructures on Ni-wire as a fiber electrode for high-performance flexible fiber supercapacitors. Such a unique structure exhibited remarkable electrochemical performance with high capacitance (29.7 F cm(-3) at 2.5 mA), excellent rate capability (97.5% retention at 20 mA), and super cycling stability (80% retention, even after 5000 cycles). The remarkable electrochemical performance is attributed to the large active area in the 3D porous architecture and direct contact between the active materials and 3D-Ni current collectors, which facilitate easy ionic/electronic transport. The symmetric fiber super-capacitor showed a gravimetric energy density of 2.18 W h kg(-1) (0.21 mW h cm(-3)) and a power density of 21.6 W kg(-1) (2.1 mW cm(-3)) with good flexibility and cycling performance, signifying potential applications in high-performance flexible energy storage devices. Further, performance in a self-powered system was demonstrated by charging these wire type NiCo2O4/Ni supercapacitors by serially wound DSSCs to drive commercial LEDs. These results suggest that the fabricated device has excellent potential as a power source for flexible, portable and wearable applications as well as self-powered systems-
dc.languageEnglish-
dc.publisherROYAL SOC CHEMISTRY-
dc.titleRealization of high performance flexible wire supercapacitors based on 3-dimensional NiCo2O4/Ni fibers-
dc.typeArticle-
dc.identifier.wosid000372754000008-
dc.identifier.scopusid2-s2.0-84962033746-
dc.type.rimsART-
dc.citation.volume4-
dc.citation.issue13-
dc.citation.beginningpage4718-
dc.citation.endingpage4727-
dc.citation.publicationnameJOURNAL OF MATERIALS CHEMISTRY A-
dc.identifier.doi10.1039/c5ta10781d-
dc.contributor.localauthorRyu, Seung-Tak-
dc.contributor.nonIdAuthorRamadoss, Ananthakumar-
dc.contributor.nonIdAuthorKang, Kyeong-Nam-
dc.contributor.nonIdAuthorAhn, Hyo-Jin-
dc.contributor.nonIdAuthorKim, Sun-I-
dc.contributor.nonIdAuthorJang, Ji-Hyun-
dc.description.isOpenAccessN-
dc.type.journalArticleArticle-
dc.subject.keywordPlusSOLID-STATE SUPERCAPACITORS-
dc.subject.keywordPlusELECTROCHEMICAL ENERGY-STORAGE-
dc.subject.keywordPlusCORE-SHELL NANOWIRES-
dc.subject.keywordPlusSELF-POWERED SYSTEMS-
dc.subject.keywordPlusASYMMETRIC SUPERCAPACITORS-
dc.subject.keywordPlusELECTRODES-
dc.subject.keywordPlusCARBON-
dc.subject.keywordPlusFILMS-
dc.subject.keywordPlusFABRICATION-
dc.subject.keywordPlusNANOSHEETS-
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