Cl-/Cl3-Redox Voltammetry to Recognize the Interfacial Layer on Positively Electrified Carbon in water-in-Salt Electrolytes
DC Field | Value | Language |
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dc.contributor.author | Son, Sungjun | - |
dc.contributor.author | Yeo, Jeongmin | - |
dc.contributor.author | Chang, Jinho | - |
dc.date.accessioned | 2023-05-03T13:29:57Z | - |
dc.date.available | 2023-05-03T13:29:57Z | - |
dc.date.created | 2022-10-06 | - |
dc.date.issued | 2022-09 | - |
dc.identifier.issn | 0003-2700 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/185355 | - |
dc.description.abstract | A Water-in-Saltelectrolyte solution (WiSE) is a promising aqueous medium for lithium-ion batteries containing highly concentrated electrolytes. For the increased kinetic overpotential of water oxidation in WiSE, the formation of an interfacial layer (IFL) on a positively electrified electrode is crucial. Nonetheless, most related studies have been restricted to theoretical approaches. In this Article, we voltammetrically study the Cl-/Cl3-/Cl2 redox reaction on Pt and glassy carbon (GC) electrodes in WiSE containing LiTFSI (WiSELiTFSI) and demonstrate that careful monitoring of Cl-/Cl3- redox voltammetry can allow recognition of an IFL formed on a positively electrified electrode. The voltammetric wave attributed to the electro-oxidation of Cl- on a GC electrode was negatively more shifted as the molal concentration of LiTFSI was increased from 0.5 to 6 m, while there was no shift on Pt. Also, there was voltammetric resolution into two peaks associated with Cl-/Cl3- and Cl3-/Cl2 on the GC electrode in WiSELiTFSI, while only unresolved, one redox-paired voltammograms were observed on Pt, regardless of the molal concentration of LiTFSI. These two main voltammetric features indicate the LiTFSI-induced IFL coupled with Cl- and Cl3- on a GC electrode induced by an applied potential of 2 V versus the point of zero charge (PZC). We found other halide/halogen redox reactions did not show differentiated voltammetric behaviors in WiSELiTFSI, which demonstrates the uniqueness of the Cl-/Cl3- redox reaction for recognizing the IFL formed on a positively charged electrode surface. Lastly, a strong interaction between the IFL and Cl species was also confirmed by XPS measurements. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | American Chemical Society | - |
dc.title | Cl-/Cl3-Redox Voltammetry to Recognize the Interfacial Layer on Positively Electrified Carbon in water-in-Salt Electrolytes | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Chang, Jinho | - |
dc.identifier.doi | 10.1021/acs.analchem.2c02029 | - |
dc.identifier.scopusid | 2-s2.0-85137877617 | - |
dc.identifier.wosid | 000894107600001 | - |
dc.identifier.bibliographicCitation | Analytical Chemistry, v.94, no.37, pp.12691 - 12698 | - |
dc.relation.isPartOf | Analytical Chemistry | - |
dc.citation.title | Analytical Chemistry | - |
dc.citation.volume | 94 | - |
dc.citation.number | 37 | - |
dc.citation.startPage | 12691 | - |
dc.citation.endPage | 12698 | - |
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 | Chemistry | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Analytical | - |
dc.subject.keywordPlus | IONIC LIQUID | - |
dc.subject.keywordPlus | ELECTRODES | - |
dc.subject.keywordPlus | ELECTROOXIDATION | - |
dc.subject.keywordPlus | ACETONITRILE | - |
dc.subject.keywordPlus | CHEMISTRY | - |
dc.subject.keywordPlus | CHLORIDE | - |
dc.subject.keywordPlus | BATTERY | - |
dc.subject.keywordPlus | ANION | - |
dc.identifier.url | https://pubs.acs.org/doi/10.1021/acs.analchem.2c02029 | - |
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