DC Field | Value | Language |
---|---|---|
dc.contributor.author | Park, Hongjun | ko |
dc.contributor.author | Terhorst, Steven K. | ko |
dc.contributor.author | Bera, Raj Kumar | ko |
dc.contributor.author | Ryoo, Ryong | ko |
dc.date.accessioned | 2019-11-04T05:20:11Z | - |
dc.date.available | 2019-11-04T05:20:11Z | - |
dc.date.created | 2019-11-04 | - |
dc.date.created | 2019-11-04 | - |
dc.date.created | 2019-11-04 | - |
dc.date.issued | 2019-12 | - |
dc.identifier.citation | CARBON, v.155, pp.570 - 579 | - |
dc.identifier.issn | 0008-6223 | - |
dc.identifier.uri | http://hdl.handle.net/10203/268188 | - |
dc.description.abstract | Zeolite-templated synthesis is a versatile route to ordered microporous carbons built with single-walled sp(2) framework of various structures, but the use of hazardous HF to dissolve the zeolite template is still a critical safety issue. We investigated the template-removal process using NaOH and HCl, which are safer than HF. The results indicated that the residual ash content in the carbon could be lowered to less than 5 wt% when the template was removed by consecutive treatments using NaOH and HCl in a proper sequence depending on the zeolite framework type. The carbon obtained in this manner exhibited a rather increased supercapacitance in aqueous media at high current density, as compared to carbons from HF-washing. In the case of the non-aqueous supercapacitor, however, the washing with NaOH-HCl resulted in low capacitance. This was due to the effect of NaOH to generate oxygen-functional groups, which could lead to an increase in the hydrophilicity, and a decrease in the electrical conductivity. Furthermore, the oxygen-functional groups could serve as a base to graft organic amines. When the carbon was heated in H-2, the oxygen content decreased to a similar level to that of the HF-washed carbon, restoring the conductivity and electrochemical energy storage characteristics. (C) 2019 Elsevier Ltd. All rights reserved. | - |
dc.language | English | - |
dc.publisher | PERGAMON-ELSEVIER SCIENCE LTD | - |
dc.title | Template dissolution with NaOH-HCl in the synthesis of zeolite-templated carbons: Effects on oxygen functionalization and electrical energy storage characteristics | - |
dc.type | Article | - |
dc.identifier.wosid | 000491864400066 | - |
dc.identifier.scopusid | 2-s2.0-85072189691 | - |
dc.type.rims | ART | - |
dc.citation.volume | 155 | - |
dc.citation.beginningpage | 570 | - |
dc.citation.endingpage | 579 | - |
dc.citation.publicationname | CARBON | - |
dc.identifier.doi | 10.1016/j.carbon.2019.09.020 | - |
dc.contributor.localauthor | Ryoo, Ryong | - |
dc.contributor.nonIdAuthor | Terhorst, Steven K. | - |
dc.contributor.nonIdAuthor | Bera, Raj Kumar | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | DOUBLE-LAYER CAPACITANCE | - |
dc.subject.keywordPlus | MICROPOROUS CARBON | - |
dc.subject.keywordPlus | NANOPOROUS CARBON | - |
dc.subject.keywordPlus | ACTIVATED CARBONS | - |
dc.subject.keywordPlus | POROUS CARBON | - |
dc.subject.keywordPlus | GRAPHENE | - |
dc.subject.keywordPlus | OXIDATION | - |
dc.subject.keywordPlus | DEALUMINATION | - |
dc.subject.keywordPlus | CARBONIZATION | - |
dc.subject.keywordPlus | DESILICATION | - |
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