Viologen-Bromide Dual-Redox Ionic Solid Complexes: Understanding Their Electrochemical Formation and Proton-Accompanied Redox Chemistry
DC Field | Value | Language |
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dc.contributor.author | Lee, Semi | - |
dc.contributor.author | Muya, Jules Tshishimbi | - |
dc.contributor.author | Chung, Hoeil | - |
dc.contributor.author | Chang, Jinho | - |
dc.date.accessioned | 2022-07-09T03:10:10Z | - |
dc.date.available | 2022-07-09T03:10:10Z | - |
dc.date.created | 2021-05-12 | - |
dc.date.issued | 2019-11 | - |
dc.identifier.issn | 1944-8244 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/146889 | - |
dc.description.abstract | The inhibition of self-discharge in a redox-enhanced electrochemical capacitor (Redox-EC) is crucial for excellent energy retention. Heptyl viologen dibromide (HVBr2) was chosen as a strong candidate of a dual-redox species in Redox-EC due to its solid complexations during the charging process, at which HV2+ is electrochemically reduced to HV+center dot and form a solid complex, [HV+center dot center dot Br-], on an anode while Br- is electro-oxidized to Br-3(-) and renders [HV2+center dot 2Br(3)(-)] on a cathode. The solid complexes could not transfer across the separator, resulting in significant diminution of the self-discharge. In this Article, we present detailed electrochemical studies of formation of [HV2+center dot 2Br(3)(-)] and [HV+center dot center dot Br-], their redox features, and galvanic exchange reactions between the two types of dual-redox ionic solids on a Pt ultra-microelectrode (UME) in neutral (0.33 M Na2SO4) and acidic (1 M H2SO4) solutions. Most importantly, through voltammetric and particle-impact electrochemical analyses, we found that the redox and galvanic exchange reactions of the two dual-redox ionic solid complexes involve H+ transfer, which is the key process to limit the overall kinetics of the electrochemical reactions. We also rationalize the proton-accompanied galvanic exchange reaction based on computational simulation. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.title | Viologen-Bromide Dual-Redox Ionic Solid Complexes: Understanding Their Electrochemical Formation and Proton-Accompanied Redox Chemistry | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Chung, Hoeil | - |
dc.contributor.affiliatedAuthor | Chang, Jinho | - |
dc.identifier.doi | 10.1021/acsami.9b13985 | - |
dc.identifier.scopusid | 2-s2.0-85074851552 | - |
dc.identifier.wosid | 000499740300085 | - |
dc.identifier.bibliographicCitation | ACS APPLIED MATERIALS & INTERFACES, v.11, no.46, pp.43659 - 43670 | - |
dc.relation.isPartOf | ACS APPLIED MATERIALS & INTERFACES | - |
dc.citation.title | ACS APPLIED MATERIALS & INTERFACES | - |
dc.citation.volume | 11 | - |
dc.citation.number | 46 | - |
dc.citation.startPage | 43659 | - |
dc.citation.endPage | 43670 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | N | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalWebOfScienceCategory | Nanoscience & Nanotechnology | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.subject.keywordPlus | SINGLE-NANOPARTICLE COLLISIONS | - |
dc.subject.keywordPlus | AMMONIUM POLYBROMIDE DROPLETS | - |
dc.subject.keywordPlus | QUATERNARY AMMONIUM | - |
dc.subject.keywordPlus | ELECTROCATALYTIC AMPLIFICATION | - |
dc.subject.keywordPlus | ELECTROPHORETIC MIGRATION | - |
dc.subject.keywordPlus | AQUEOUS-ELECTROLYTE | - |
dc.subject.keywordPlus | EMULSION DROPLET | - |
dc.subject.keywordPlus | MERCURY | - |
dc.subject.keywordPlus | STORAGE | - |
dc.subject.keywordPlus | ULTRAMICROELECTRODE | - |
dc.subject.keywordAuthor | redox-enhanced electrochemical capacitor | - |
dc.subject.keywordAuthor | dual-redox ionic solid complexation | - |
dc.subject.keywordAuthor | proton-accompanied redox chemistry | - |
dc.subject.keywordAuthor | particle-impact electrochemistry | - |
dc.subject.keywordAuthor | galvanic exchange reaction | - |
dc.identifier.url | https://pubs.acs.org/doi/10.1021/acsami.9b13985 | - |
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