DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, Yena | ko |
dc.contributor.author | Hong, Misun | ko |
dc.contributor.author | Oh, Hyunjeong | ko |
dc.contributor.author | Kim, Yousoo | ko |
dc.contributor.author | Suyama, Hiroshi | ko |
dc.contributor.author | Nakanishi, Shinji | ko |
dc.contributor.author | Byon, Hye Ryung | ko |
dc.date.accessioned | 2021-03-26T01:58:08Z | - |
dc.date.available | 2021-03-26T01:58:08Z | - |
dc.date.created | 2020-10-26 | - |
dc.date.issued | 2020-09 | - |
dc.identifier.citation | JOURNAL OF PHYSICAL CHEMISTRY C, v.124, no.37, pp.20135 - 20142 | - |
dc.identifier.issn | 1932-7447 | - |
dc.identifier.uri | http://hdl.handle.net/10203/281885 | - |
dc.description.abstract | We present a fundamental study of solid-electrolyte interphase (SEI) layers toward a better understanding of interfacial electrochemistry. In particular, water-in-salt electrolytes yield SEIs with a simple composition that describes the electrolyte-electrode interface explicitly. The 21 m lithium bis(trifluoromethanesulfonyl)imide formed a porous SEI film on a highly oriented pyrolytic graphite (HOPG) electrode at -2 V (vs Ag/AgCl). The significant hydrogen evolution reaction (HER) made holes in a thin SEI film and defect sites in the HOPG. In addition, the SEI comprised fragmented TFSI without including any Li compounds. We suggested that fragments of TFSI- were precipitated out by the addition of the hydrogen atoms, which were yielded through the Volmer step and detached from the HOPG surface before HER. Subsequently, a nonporous and LiOH-rich film was formed by -4 V. The OH- and Li+ ions were enriched during the continuous HER, and their chemical reaction produced a thick film and nanoneedles. However, there was no evidence of Li+ intercalation into graphitic layers of the HOPG, presumably caused by sluggish Li+-ion transport in the Li-deficient SEI layer. This study shows variable interfacial reactions over a wide range of applied potential and the HER impact on SEI films associated with the performance of aqueous Li-ion batteries. | - |
dc.language | English | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.title | Solid Electrolyte Interphase Revealing Interfacial Electrochemistry on Highly Oriented Pyrolytic Graphite in a Water-in-Salt Electrolyte | - |
dc.type | Article | - |
dc.identifier.wosid | 000574908200028 | - |
dc.identifier.scopusid | 2-s2.0-85092114745 | - |
dc.type.rims | ART | - |
dc.citation.volume | 124 | - |
dc.citation.issue | 37 | - |
dc.citation.beginningpage | 20135 | - |
dc.citation.endingpage | 20142 | - |
dc.citation.publicationname | JOURNAL OF PHYSICAL CHEMISTRY C | - |
dc.identifier.doi | 10.1021/acs.jpcc.0c05433 | - |
dc.contributor.localauthor | Byon, Hye Ryung | - |
dc.contributor.nonIdAuthor | Hong, Misun | - |
dc.contributor.nonIdAuthor | Kim, Yousoo | - |
dc.contributor.nonIdAuthor | Suyama, Hiroshi | - |
dc.contributor.nonIdAuthor | Nakanishi, Shinji | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | WETTABILITY | - |
dc.subject.keywordPlus | XPS | - |
dc.subject.keywordPlus | NANOBUBBLES | - |
dc.subject.keywordPlus | MICROSCOPY | - |
dc.subject.keywordPlus | GRAPHENE | - |
dc.subject.keywordPlus | HYDROGEN | - |
dc.subject.keywordPlus | BEHAVIOR | - |
dc.subject.keywordPlus | INSIGHT | - |
dc.subject.keywordPlus | GROWTH | - |
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