完整後設資料紀錄
DC 欄位語言
dc.contributor.authorHuang, Guan-Minen_US
dc.contributor.authorTsai, Tsung-Chunen_US
dc.contributor.authorHuang, Chun-Weien_US
dc.contributor.authorKumar, Nageshen_US
dc.contributor.authorTseng, Tseung-Yuenen_US
dc.contributor.authorWu, Wen-Weien_US
dc.date.accessioned2018-08-21T05:52:55Z-
dc.date.available2018-08-21T05:52:55Z-
dc.date.issued2017-11-01en_US
dc.identifier.issn2211-2855en_US
dc.identifier.urihttp://dx.doi.org/10.1016/j.nanoen.2017.10.002en_US
dc.identifier.urihttp://hdl.handle.net/11536/144088-
dc.description.abstractCarbonaceous composites have attracted much attention as electrode materials for hybrid supercapacitors. Additionally, transition metal oxides, such as Co3O4, have high specific capacitance in the charging/discharging process. Here, we investigated the lithium storage mechanism of Co3O4/CNTs material via in situ transmission electron microscopy (TEM). Additionally, we analyzed the structure and composition of the anode material by high-resolution TEM, electron diffraction, energy dispersive spectroscopy (EDS) and electron energy loss spectroscopy (EELS). Using our unique in situ experimental setup that employs colloidal electrolyte, we elucidate two different mechanisms during operation, including the electrochemical reaction (battery-type) and ions intercalation (supercapacitor-type) of the electrode material. The cube-like Co3O4 nanoparticles were converted to Co nanograins dispersed in the Li2O matrix after the first charging cycle. Subsequent cycles presented a reversible reaction between Co/Li2O and CoO/Li2O. Furthermore, the porous structure of the CNTs and conservation of the Li2O matrix allow for the excellent ability to accommodate tremendous volume expansion, which enhances the life of hybrid supercapacitors. Our observations not only provide direct evidence of the electrochemical behavior but also improve the structure to promote enhanced performance for the application of hybrid supercapacitors.en_US
dc.language.isoen_USen_US
dc.subjectCo3O4/CNTsen_US
dc.subjectHybrid supercapacitoren_US
dc.subjectReversible lithium storageen_US
dc.subjectElectrochemical reactionen_US
dc.subjectIn situ TEMen_US
dc.titleDynamic observation of reversible lithium storage phenomena in hybrid supercapacitor devicesen_US
dc.typeArticleen_US
dc.identifier.doi10.1016/j.nanoen.2017.10.002en_US
dc.identifier.journalNANO ENERGYen_US
dc.citation.volume41en_US
dc.citation.spage494en_US
dc.citation.epage500en_US
dc.contributor.department材料科學與工程學系zh_TW
dc.contributor.department電子工程學系及電子研究所zh_TW
dc.contributor.departmentDepartment of Materials Science and Engineeringen_US
dc.contributor.departmentDepartment of Electronics Engineering and Institute of Electronicsen_US
dc.identifier.wosnumberWOS:000415302600054en_US
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