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dc.contributor.authorTsai, Tsung-Chunen_US
dc.contributor.authorHuang, Guan-Minen_US
dc.contributor.authorHuang, Chun-Weien_US
dc.contributor.authorChen, Jui-Yuanen_US
dc.contributor.authorYang, Chih-Chiehen_US
dc.contributor.authorTseng, Tseung-Yuenen_US
dc.contributor.authorWu, Wen-Weien_US
dc.date.accessioned2018-08-21T05:54:33Z-
dc.date.available2018-08-21T05:54:33Z-
dc.date.issued2017-09-19en_US
dc.identifier.issn0003-2700en_US
dc.identifier.urihttp://dx.doi.org/10.1021/acs.analchem.7b00958en_US
dc.identifier.urihttp://hdl.handle.net/11536/146118-
dc.description.abstractTransition metal oxides have attracted much interest owing to their ability to provide high power density in lithium batteries; therefore, it is important to understand the electrochemical behavior and mechanism of lithiation-delithiation processes. In this study, we successfully and directly observed the structural evolution of CNTs/MnO2 during the lithiation process using transmission electron microscopy (TEM). CNTs/MnO2 were selected due to their high surface area and capacitance effect, and the lithiation mechanism of the CNT wall expansion was systematically analyzed. Interestingly, the wall spacings of CNTs/MnO2 and CNTs were obviously expanded by 10.92% and 2.59%, respectively. The MnO2 layer caused structural defects on the CNTs surface that could allow penetration of Li+ and Mn4+ through the tube wall and hence improve the ionic transportation speed. This study provided direct evidence for understanding the role of CNTs/MnO2 in the lithiation process used in lithium ion batteries and also offers potential benefits for applications and development of supercapacitors.en_US
dc.language.isoen_USen_US
dc.titleIn Situ TEM Investigation of the Electrochemical Behavior in CNTs/MnO2-Based Energy Storage Devicesen_US
dc.typeArticleen_US
dc.identifier.doi10.1021/acs.analchem.7b00958en_US
dc.identifier.journalANALYTICAL CHEMISTRYen_US
dc.citation.volume89en_US
dc.citation.spage9671en_US
dc.citation.epage9675en_US
dc.contributor.department材料科學與工程學系zh_TW
dc.contributor.department電機學院zh_TW
dc.contributor.departmentDepartment of Materials Science and Engineeringen_US
dc.contributor.departmentCollege of Electrical and Computer Engineeringen_US
dc.identifier.wosnumberWOS:000411549100012en_US
Appears in Collections:Articles