Activated carbons effectively purified by post-heat treatment under vacuum conditions
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, Junam | - |
dc.contributor.author | T. Nguyen, Hoai Van | - |
dc.contributor.author | Bahk, Gyung Jin | - |
dc.contributor.author | Kwak, Kyungwon | - |
dc.contributor.author | Lee, Kyung-Koo | - |
dc.date.accessioned | 2022-02-17T13:40:20Z | - |
dc.date.available | 2022-02-17T13:40:20Z | - |
dc.date.created | 2022-02-09 | - |
dc.date.issued | 2021-10 | - |
dc.identifier.issn | 1976-4251 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/136105 | - |
dc.description.abstract | The effect of heat treatment and vacuum conditions on the textural properties and electrochemical performance of commercially available activated carbons (ACs) was investigated. The AC after post-heat treatment was characterized by nitrogen adsorption-desorption, X-ray diffraction, Raman spectroscopy, X-ray photoelectron spectroscopy, and Fourier-transform infrared spectroscopy measurements. The ACs treated under vacuum conditions exhibit a higher specific surface area and micropore surface area than those treated under nitrogen atmospheric pressure without significantly affecting the graphite structure of the AC. Under 800 degrees C temperature and vacuum conditions (AC-V800), the AC with the highest Brunauer-Emmett-Teller surface area of 1951.9 m(2) g(-1) (16.4% improvement relative to that of the original AC (1677.2 m(2) g(-1))) was obtained. This is attributed to the removal of oxygen-containing functional groups and volatile matters in the carbon by thermal treatment under vacuum conditions. Consequently, the electric double-layer capacitor using ACs treated under vacuum conditions (1 kPa) at 800 degrees C (AC-V800) shows considerably improved electrochemical performance in terms of higher specific capacitance and better cycling stability at a high working voltage (3.1 V), compared to the nitrogen-treated and commercial ACs. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | SPRINGER JAPAN KK | - |
dc.subject | FUNCTIONAL-GROUPS | - |
dc.subject | PORE STRUCTURE | - |
dc.subject | SURFACE | - |
dc.subject | CAPACITANCE | - |
dc.subject | PYROLYSIS | - |
dc.subject | MECHANISM | - |
dc.subject | NITROGEN | - |
dc.subject | ACID | - |
dc.subject | SIZE | - |
dc.subject | COAL | - |
dc.title | Activated carbons effectively purified by post-heat treatment under vacuum conditions | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Kwak, Kyungwon | - |
dc.identifier.doi | 10.1007/s42823-020-00209-y | - |
dc.identifier.scopusid | 2-s2.0-85098588409 | - |
dc.identifier.wosid | 000604476700002 | - |
dc.identifier.bibliographicCitation | CARBON LETTERS, v.31, no.5, pp.973 - 984 | - |
dc.relation.isPartOf | CARBON LETTERS | - |
dc.citation.title | CARBON LETTERS | - |
dc.citation.volume | 31 | - |
dc.citation.number | 5 | - |
dc.citation.startPage | 973 | - |
dc.citation.endPage | 984 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.description.journalRegisteredClass | kci | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.subject.keywordPlus | ACID | - |
dc.subject.keywordPlus | CAPACITANCE | - |
dc.subject.keywordPlus | COAL | - |
dc.subject.keywordPlus | FUNCTIONAL-GROUPS | - |
dc.subject.keywordPlus | MECHANISM | - |
dc.subject.keywordPlus | NITROGEN | - |
dc.subject.keywordPlus | PORE STRUCTURE | - |
dc.subject.keywordPlus | PYROLYSIS | - |
dc.subject.keywordPlus | SIZE | - |
dc.subject.keywordPlus | SURFACE | - |
dc.subject.keywordAuthor | Activated carbon | - |
dc.subject.keywordAuthor | Electric double-layer capacitor | - |
dc.subject.keywordAuthor | Oxygen-containing functional groups | - |
dc.subject.keywordAuthor | Specific surface area | - |
dc.subject.keywordAuthor | Vacuum heat treatment | - |
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