In Situ TEM Investigation of the Electrochemical Behavior in CNTs/MnO2‑Based Energy Storage Devices
Transition 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 observ...
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| Veröffentlicht in: | Analytical chemistry (Washington) 2017-09, Vol.89 (18), p.9671-9675 |
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| creator | Tsai, Tsung-Chun Huang, Guan-Min Huang, Chun-Wei Chen, Jui-Yuan Yang, Chih-Chieh Tseng, Tseung-Yuen Wu, Wen-Wei |
| description | Transition 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. |
| doi_str_mv | 10.1021/acs.analchem.7b00958 |
| format | Article |
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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.</description><identifier>ISSN: 0003-2700</identifier><identifier>EISSN: 1520-6882</identifier><identifier>DOI: 10.1021/acs.analchem.7b00958</identifier><language>eng</language><publisher>Washington: American Chemical Society</publisher><subject>Analytical chemistry ; Capacitance ; Chemistry ; Electrochemical analysis ; Electrochemistry ; Electron microscopy ; Energy storage ; Lithium batteries ; Lithium-ion batteries ; Manganese oxides ; Metal oxides ; Oxides ; Supercapacitors ; Transition metal oxides ; Transmission electron microscopy</subject><ispartof>Analytical chemistry (Washington), 2017-09, Vol.89 (18), p.9671-9675</ispartof><rights>Copyright © 2017 American Chemical Society</rights><rights>Copyright American Chemical Society Sep 19, 2017</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><orcidid>0000-0002-8388-8417</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://pubs.acs.org/doi/pdf/10.1021/acs.analchem.7b00958$$EPDF$$P50$$Gacs$$H</linktopdf><linktohtml>$$Uhttps://pubs.acs.org/doi/10.1021/acs.analchem.7b00958$$EHTML$$P50$$Gacs$$H</linktohtml><link.rule.ids>314,776,780,27055,27903,27904,56716,56766</link.rule.ids></links><search><creatorcontrib>Tsai, Tsung-Chun</creatorcontrib><creatorcontrib>Huang, Guan-Min</creatorcontrib><creatorcontrib>Huang, Chun-Wei</creatorcontrib><creatorcontrib>Chen, Jui-Yuan</creatorcontrib><creatorcontrib>Yang, Chih-Chieh</creatorcontrib><creatorcontrib>Tseng, Tseung-Yuen</creatorcontrib><creatorcontrib>Wu, Wen-Wei</creatorcontrib><title>In Situ TEM Investigation of the Electrochemical Behavior in CNTs/MnO2‑Based Energy Storage Devices</title><title>Analytical chemistry (Washington)</title><addtitle>Anal. 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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.</description><subject>Analytical chemistry</subject><subject>Capacitance</subject><subject>Chemistry</subject><subject>Electrochemical analysis</subject><subject>Electrochemistry</subject><subject>Electron microscopy</subject><subject>Energy storage</subject><subject>Lithium batteries</subject><subject>Lithium-ion batteries</subject><subject>Manganese oxides</subject><subject>Metal oxides</subject><subject>Oxides</subject><subject>Supercapacitors</subject><subject>Transition metal oxides</subject><subject>Transmission electron microscopy</subject><issn>0003-2700</issn><issn>1520-6882</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><recordid>eNpd0MFKw0AQgOFFFKzVN_Cw4MVL2tlNstkcbY1aqPbQeg6b7KTdkmY1mxS8-Qq-ok9iQiuIp4HhY2B-Qq4ZjBhwNla5G6lKlfkGd6MoA4hDeUIGLOTgCSn5KRkAgO_xCOCcXDi3BWAMmBgQnFV0aZqWrpJnOqv26BqzVo2xFbUFbTZIkxLzprb9bZOrkk5wo_bG1tRUdPqycuPnasG_P78myqGmSYX1-oMuG1urNdJ73Jsc3SU5K1Tp8Oo4h-T1IVlNn7z54nE2vZt7isdB42nlFxByrYpQIAfMBONSxzwGnqkszLQCzbNIZ1royNcohAhlEBdCYKy0L_0huT3cfavte9v9ku6My7EsVYW2dSmLuYxkGPi8ozf_6Na2dRexVyFjfgAs6hQcVJf4D4C07572y9_u6bG7_wMbkHmk</recordid><startdate>20170919</startdate><enddate>20170919</enddate><creator>Tsai, Tsung-Chun</creator><creator>Huang, Guan-Min</creator><creator>Huang, Chun-Wei</creator><creator>Chen, Jui-Yuan</creator><creator>Yang, Chih-Chieh</creator><creator>Tseng, Tseung-Yuen</creator><creator>Wu, Wen-Wei</creator><general>American Chemical Society</general><scope>7QF</scope><scope>7QO</scope><scope>7QQ</scope><scope>7SC</scope><scope>7SE</scope><scope>7SP</scope><scope>7SR</scope><scope>7TA</scope><scope>7TB</scope><scope>7TM</scope><scope>7U5</scope><scope>7U7</scope><scope>7U9</scope><scope>8BQ</scope><scope>8FD</scope><scope>C1K</scope><scope>F28</scope><scope>FR3</scope><scope>H8D</scope><scope>H8G</scope><scope>H94</scope><scope>JG9</scope><scope>JQ2</scope><scope>KR7</scope><scope>L7M</scope><scope>L~C</scope><scope>L~D</scope><scope>P64</scope><scope>7X8</scope><orcidid>https://orcid.org/0000-0002-8388-8417</orcidid></search><sort><creationdate>20170919</creationdate><title>In Situ TEM Investigation of the Electrochemical Behavior in CNTs/MnO2‑Based Energy Storage Devices</title><author>Tsai, Tsung-Chun ; 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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.</abstract><cop>Washington</cop><pub>American Chemical Society</pub><doi>10.1021/acs.analchem.7b00958</doi><tpages>5</tpages><orcidid>https://orcid.org/0000-0002-8388-8417</orcidid></addata></record> |
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| subjects | Analytical chemistry Capacitance Chemistry Electrochemical analysis Electrochemistry Electron microscopy Energy storage Lithium batteries Lithium-ion batteries Manganese oxides Metal oxides Oxides Supercapacitors Transition metal oxides Transmission electron microscopy |
| title | In Situ TEM Investigation of the Electrochemical Behavior in CNTs/MnO2‑Based Energy Storage Devices |
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