Evidence for lithium superoxide-like species in the discharge product of a Li-O-2 battery
DC Field | Value | Language |
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dc.contributor.author | Yang, Junbing | - |
dc.contributor.author | Zhai, Dengyun | - |
dc.contributor.author | Wang, Hsien-Hau | - |
dc.contributor.author | Lau, Kah Chun | - |
dc.contributor.author | Schlueter, John A. | - |
dc.contributor.author | Du, Peng | - |
dc.contributor.author | Myers, Deborah J. | - |
dc.contributor.author | Sun, Yang Kook | - |
dc.contributor.author | Curtiss, Larry A. | - |
dc.contributor.author | Amine, Khalil | - |
dc.date.accessioned | 2021-08-02T18:58:18Z | - |
dc.date.available | 2021-08-02T18:58:18Z | - |
dc.date.created | 2021-05-12 | - |
dc.date.issued | 2013-01 | - |
dc.identifier.issn | 1463-9076 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/26795 | - |
dc.description.abstract | We report on the use of a petroleum coke-based activated carbon (AC) with very high surface area for a Li-O-2 battery cathode without the use of any additional metal catalysts. Electrochemical measurement in a tetra(ethylene) glycol dimethyl ether-lithium triflate (TEGDME-LiCF3SO3) electrolyte results in two voltage plateaus during charging at 3.2-3.5 and 4.2-4.3 V versus Li+/Li. Herein we present evidence from Raman and magnetic measurements that the lower plateau corresponds to a form of lithium peroxide with superoxide-like properties characterized by a low temperature magnetic phase transition and a high O-O stretching frequency (1125 cm(-1)). The magnetic phase transition and the high O-O stretching frequency disappear when charged to above 3.7 V. Theoretical calculations indicate that a surface superoxide structure on lithium peroxide clusters and some lithium peroxide surfaces have an unpaired electron and a high O-O stretching frequency that help explain the observations. These results provide evidence that the form of the lithium peroxide discharge product is important to obtaining a low charge overpotential, and thus improving the round-trip efficiency between discharge and charge. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.title | Evidence for lithium superoxide-like species in the discharge product of a Li-O-2 battery | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Sun, Yang Kook | - |
dc.identifier.doi | 10.1039/c3cp00069a | - |
dc.identifier.scopusid | 2-s2.0-84874064123 | - |
dc.identifier.wosid | 000315165100009 | - |
dc.identifier.bibliographicCitation | PHYSICAL CHEMISTRY CHEMICAL PHYSICS, v.15, no.11, pp.3764 - 3771 | - |
dc.relation.isPartOf | PHYSICAL CHEMISTRY CHEMICAL PHYSICS | - |
dc.citation.title | PHYSICAL CHEMISTRY CHEMICAL PHYSICS | - |
dc.citation.volume | 15 | - |
dc.citation.number | 11 | - |
dc.citation.startPage | 3764 | - |
dc.citation.endPage | 3771 | - |
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.journalResearchArea | Physics | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Physics, Atomic, Molecular & Chemical | - |
dc.subject.keywordPlus | STABILITY | - |
dc.subject.keywordPlus | ELECTRODES | - |
dc.subject.keywordPlus | DESIGN | - |
dc.identifier.url | https://pubs.rsc.org/en/content/articlelanding/2013/CP/c3cp00069a | - |
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