Mechanism for Preserving Volatile Nitrogen Dioxide and Sustainable Redox Mediation in the Nonaqueous Lithium-Oxygen Battery
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Ahn, Su Mi | - |
dc.contributor.author | Kim, Do Youb | - |
dc.contributor.author | Suk, Jungdon | - |
dc.contributor.author | Kang, Yongku | - |
dc.contributor.author | Kim, Hwan Kyu | - |
dc.contributor.author | Kim, Dong Wook | - |
dc.date.accessioned | 2021-11-24T00:43:28Z | - |
dc.date.available | 2021-11-24T00:43:28Z | - |
dc.date.created | 2021-08-30 | - |
dc.date.issued | 2021-02-24 | - |
dc.identifier.issn | 1944-8244 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/128537 | - |
dc.description.abstract | Excessive overpotential during charging is a major hurdle in lithium-oxygen (Li-O-2) battery technology. NO2-/ NO2 redox mediation is an efficient way to substantially reduce the overpotential and to enhance oxygen efficiency and cycle life by suppressing parasitic reactions. Considering that nitrogen dioxide (NO2) is a gas, it is quite surprising that NO2-/NO2 redox reactions can be sustained for a long cycle life in Li-O-2 batteries with such an open structure. A detailed study with in situ differential electrochemical mass spectrometry (DEMS) elucidated that NO2 could follow three reaction pathways during charging: (1) oxidation of Li2O2 to evolve oxygen, (2) vaporization, and (3) conversion into NO3-. Among the pathways, Li2O2 oxidation occurs exclusively in the presence of Li2O2, which suggests that NO2 has high reactivity to Li2O2. At the end of the charging process, most of the volatile oxidized couple (NO2) is stored by conversion to a stable third species (NO3-), which is then reused for producing the reduced couple (NO2-) in the next cycle. The dominant reaction of Li2O2 oxidation involves the temporary storage of NO2 as a stable third species during charging, which is an innovative way for preserving the volatile redox couple, resulting in a sustainable redox mediation for a high-performance Li-O-2 battery. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.title | Mechanism for Preserving Volatile Nitrogen Dioxide and Sustainable Redox Mediation in the Nonaqueous Lithium-Oxygen Battery | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Kim, Hwan Kyu | - |
dc.identifier.doi | 10.1021/acsami.0c17960 | - |
dc.identifier.scopusid | 2-s2.0-85101526168 | - |
dc.identifier.wosid | 000623228500030 | - |
dc.identifier.bibliographicCitation | ACS APPLIED MATERIALS & INTERFACES, v.13, no.7, pp.8159 - 8168 | - |
dc.relation.isPartOf | ACS APPLIED MATERIALS & INTERFACES | - |
dc.citation.title | ACS APPLIED MATERIALS & INTERFACES | - |
dc.citation.volume | 13 | - |
dc.citation.number | 7 | - |
dc.citation.startPage | 8159 | - |
dc.citation.endPage | 8168 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
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.keywordAuthor | NO2-/NO2 redox mediation | - |
dc.subject.keywordAuthor | lithium-oxygen battery | - |
dc.subject.keywordAuthor | oxidation of Li2O2 | - |
dc.subject.keywordAuthor | NO2 vaporization | - |
dc.subject.keywordAuthor | conversion into NO3- | - |
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.
(02841) 서울특별시 성북구 안암로 14502-3290-1114
COPYRIGHT © 2021 Korea 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.