Multi-porous electrode derived from zeolitic imidazolate framework-8 coating through continuous two-stage heat treatment for vanadium redox flow batteries
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, Ju Yeong | - |
dc.contributor.author | Kang, Yun Chan | - |
dc.contributor.author | Ahn, Wook | - |
dc.contributor.author | Song, Shin Ae | - |
dc.contributor.author | Kim, Kiyoung | - |
dc.contributor.author | Woo, Ju Young | - |
dc.contributor.author | Park, Jeasung | - |
dc.contributor.author | Lim, Sung Nam | - |
dc.date.accessioned | 2024-06-11T08:30:53Z | - |
dc.date.available | 2024-06-11T08:30:53Z | - |
dc.date.issued | 2024-05 | - |
dc.identifier.issn | 2352-152X | - |
dc.identifier.issn | 2352-1538 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/sch/handle/2021.sw.sch/26281 | - |
dc.description.abstract | Developing high-performance electrodes is imperative for improving the energy efficiency and power density of vanadium redox flow battery (VRFB). This study developed a multi-porous graphite felt (GF) electrode, comprising micropores, mesopores, and macropores. This was achieved through a continuous two-stage heat treatment based on zeolitic imidazolate framework-8 coating. Cyclic voltammetry and electrochemical impedance spectroscopy results confirmed the effect of the pore size on the electrochemical properties by comparing the single-scale pore structure and multi-porous structure. The electrochemical activities were enhanced both by micropores, which significantly increased the number of active sites, and by mesopores and macropores, which improved the accessibility of vanadium ions to the active sites. Consequently, the multi-porous electrode showed the highest electrochemical activity for vanadium ion redox reactions owing to the synergistic advantages conferred by the presence of different pore sizes. The VRFB with the multi-porous electrode exhibited the highest energy efficiency (70.75 %) at a current density of 200 mA cm(-2), which was 12.07 % higher than that of Bare GF. Furthermore, it exhibited a specific discharge capacity of 13.51 Ah L-1 at a current density of 250 mA cm(-2). The VRFB with multi-porous electrodes showed stable operation for 3300 cycles without a significant decrease in efficiency or modifications to the pore structure. The proposed method can be used to effectively fabricate high-performance multi-porous electrodes applicable to VRFBs and other energy storage systems. | - |
dc.language | 영어 | - |
dc.language.iso | ENG | - |
dc.publisher | ELSEVIER | - |
dc.title | Multi-porous electrode derived from zeolitic imidazolate framework-8 coating through continuous two-stage heat treatment for vanadium redox flow batteries | - |
dc.type | Article | - |
dc.publisher.location | 네델란드 | - |
dc.identifier.doi | 10.1016/j.est.2024.111225 | - |
dc.identifier.scopusid | 2-s2.0-85187199668 | - |
dc.identifier.wosid | 001209681900001 | - |
dc.identifier.bibliographicCitation | JOURNAL OF ENERGY STORAGE, v.86 | - |
dc.citation.title | JOURNAL OF ENERGY STORAGE | - |
dc.citation.volume | 86 | - |
dc.type.docType | Article | - |
dc.description.isOpenAccess | N | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Energy & Fuels | - |
dc.relation.journalWebOfScienceCategory | Energy & Fuels | - |
dc.subject.keywordPlus | CARBON FELT ELECTRODE | - |
dc.subject.keywordPlus | ELECTROCATALYTIC PERFORMANCE | - |
dc.subject.keywordPlus | GRAPHITE FELT | - |
dc.subject.keywordPlus | ZIF-8 | - |
dc.subject.keywordPlus | POWER | - |
dc.subject.keywordAuthor | Vanadium redox flow battery | - |
dc.subject.keywordAuthor | Multi-porous electrode | - |
dc.subject.keywordAuthor | Zeolitic imidazolate framework | - |
dc.subject.keywordAuthor | Graphite felt | - |
dc.subject.keywordAuthor | Continuous two-stage heat treatment | - |
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.
(31538) 22, Soonchunhyang-ro, Asan-si, Chungcheongnam-do, Republic of Korea+82-41-530-1114
COPYRIGHT 2021 by SOONCHUNHYANG UNIVERSITY ALL RIGHTS RESERVED.
Certain data included herein are derived from the © Web of Science of Clarivate Analytics. All rights reserved.
You may not copy or re-distribute this material in whole or in part without the prior written consent of Clarivate Analytics.