https://scholars.lib.ntu.edu.tw/handle/123456789/409002
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.author | Lin Y.-P. | en_US |
dc.contributor.author | Tsai C.-B. | en_US |
dc.contributor.author | Ho W.-H. | en_US |
dc.contributor.author | Wu N.-L. | en_US |
dc.creator | Ho W.-H.;Tsai C.-B.;Lin Y.-P.;Wu N.-L. | - |
dc.date.accessioned | 2019-05-17T04:56:24Z | - |
dc.date.available | 2019-05-17T04:56:24Z | - |
dc.date.issued | 2011 | - |
dc.identifier.issn | 02540584 | - |
dc.identifier.uri | https://scholars.lib.ntu.edu.tw/handle/123456789/409002 | - |
dc.description.abstract | MnO2 has been deposited onto two types of carbon (C) substrates, including a non-porous multi-wall carbon nano-tube (CNT) and a porous carbon black (CB) powder, by a solution reduction process where MnO4 - was reduced at 80 ¢XC by the C substrate so as to give nano-crystalline MnO2 directly at the C surface. The nature of the C substrate has profound effects on polymorphicity, microstructure and electrochemical properties, in terms of supercapacitor application, of the resulting oxide. Deposition on CNT produces meso/macro-porous layer containing predominantly spinel MnO2 strongly bonded to the CNTs and having a larger surface area, while that on CB results in birnessite granules with a lower surface area. In addition to having a higher specific capacitance (309 F g-1), the MnO2/CNT electrode exhibits superior power performance (221 F g-1 at 500 mV s-1 or ca. 20 Wh kg -1at 88 kW kg-1) to MnO2/CB due to reduced electronic and ion-diffusion resistances. Furthermore, the MnO2/CNT electrode also exhibits slower self-discharging rate and greater cycling stability. The results indicate that the MnO2 spinel/CNT holds promise for supercapacitor applications. ? 2011 Elsevier B.V. All rights reserved. | - |
dc.language | English | - |
dc.relation.ispartof | Materials Chemistry and Physics | en_US |
dc.subject | Chemical synthesis | - |
dc.subject | Composite materials | - |
dc.subject | Nanostructures | - |
dc.subject | Supercapacitor | - |
dc.title | Comparative study on nanostructured MnO2/carbon composites synthesized by spontaneous reduction for supercapacitor application | en_US |
dc.type | journal article | en |
dc.identifier.doi | 10.1016/j.matchemphys.2011.06.050 | - |
dc.identifier.scopus | 2-s2.0-80052577161 | - |
dc.identifier.url | https://www.scopus.com/inward/record.uri?eid=2-s2.0-80052577161&doi=10.1016%2fj.matchemphys.2011.06.050&partnerID=40&md5=839d2132db131053b251bade07b008c4 | - |
dc.relation.pages | 367-372 | - |
dc.relation.journalvolume | 130 | - |
dc.relation.journalissue | 1-2 | - |
item.openairecristype | http://purl.org/coar/resource_type/c_6501 | - |
item.openairetype | journal article | - |
item.grantfulltext | none | - |
item.cerifentitytype | Publications | - |
item.fulltext | no fulltext | - |
crisitem.author.dept | Chemical Engineering | - |
crisitem.author.orcid | 0000-0001-6545-8790 | - |
crisitem.author.parentorg | College of Engineering | - |
顯示於: | 化學工程學系 |
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