Nitrogen-Doping Through Two-Step Pyrolysis of Polyacrylonitrile on Graphite Felts for Vanadium Redox Flow Batteries
DC Field | Value | Language |
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dc.contributor.author | Yoon, Sang Jun | - |
dc.contributor.author | Kim, Sangwon | - |
dc.contributor.author | Kim, Dong Kyu | - |
dc.contributor.author | Yu, Duk Man | - |
dc.contributor.author | Hempelmann, Rolf | - |
dc.contributor.author | Hong, Young Taik | - |
dc.contributor.author | So, Soonyong | - |
dc.date.available | 2020-08-03T05:20:42Z | - |
dc.date.issued | 2020-04-16 | - |
dc.identifier.issn | 0887-0624 | - |
dc.identifier.issn | 1520-5029 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/42666 | - |
dc.description.abstract | We report a facile method for the nitrogen-doping process using the same precursor material for graphite felt electrodes, polyacrylonitrile (PAN). To utilize the nitrogen content in PAN, two steps of thermal treatment of PAN-coated graphite felts are performed; a PAN solution is coated on a graphite felt, and the sample is oxidized at 280 degrees C under the ambient atmosphere and carbonized at 900 degrees C under N-2, consecutively. Through the two-step pyrolysis, nitrogen is successfully doped on the graphite felts, and the concentration of PAN solution is controlled to enhance the performance of vanadium redox flow batteries (VRFBs). With 4 wt % of PAN coating solution, the electrode electrocatalytic activity is enhanced compared to that of a conventional electrode, and the voltage efficiency increases, resulting in higher energy efficiency under the various current densities. Especially at high current densities above 100 mA/cm(2), the optimized nitrogen-doped electrode shows about 5% higher voltage and energy efficiencies and a higher long-term stability in terms of efficiencies and capacity retention. This nitrogen-doping process with the same precursor for the electrode offers potential for employing nitrogen-doping on the conventional electrode materials in an inexpensive way. | - |
dc.format.extent | 8 | - |
dc.language | 영어 | - |
dc.language.iso | ENG | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.title | Nitrogen-Doping Through Two-Step Pyrolysis of Polyacrylonitrile on Graphite Felts for Vanadium Redox Flow Batteries | - |
dc.type | Article | - |
dc.identifier.doi | 10.1021/acs.energyfuels.0c00689 | - |
dc.identifier.bibliographicCitation | ENERGY & FUELS, v.34, no.4, pp 5052 - 5059 | - |
dc.description.isOpenAccess | N | - |
dc.identifier.wosid | 000526324100099 | - |
dc.identifier.scopusid | 2-s2.0-85085274982 | - |
dc.citation.endPage | 5059 | - |
dc.citation.number | 4 | - |
dc.citation.startPage | 5052 | - |
dc.citation.title | ENERGY & FUELS | - |
dc.citation.volume | 34 | - |
dc.type.docType | Article | - |
dc.publisher.location | 미국 | - |
dc.subject.keywordPlus | DOPED CARBON | - |
dc.subject.keywordPlus | POSITIVE ELECTRODE | - |
dc.subject.keywordPlus | ENERGY-STORAGE | - |
dc.subject.keywordPlus | CHEMICAL-MODIFICATION | - |
dc.subject.keywordPlus | TUNGSTEN TRIOXIDE | - |
dc.subject.keywordPlus | CELL | - |
dc.subject.keywordPlus | ELECTROCATALYST | - |
dc.subject.keywordPlus | FABRICATION | - |
dc.subject.keywordPlus | NANOTUBES | - |
dc.subject.keywordPlus | GRAPHENE | - |
dc.relation.journalResearchArea | Energy & Fuels | - |
dc.relation.journalResearchArea | Engineering | - |
dc.relation.journalWebOfScienceCategory | Energy & Fuels | - |
dc.relation.journalWebOfScienceCategory | Engineering, Chemical | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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