DC Field | Value | Language |
---|---|---|
dc.contributor.author | Mota, Filipe Marques | ko |
dc.contributor.author | Kang, Jin-Hyuk | ko |
dc.contributor.author | Jung, Younguk | ko |
dc.contributor.author | Park, Jiwon | ko |
dc.contributor.author | Na, Moony | ko |
dc.contributor.author | Kim, Dong Ha | ko |
dc.contributor.author | Byon, Hye Ryung | ko |
dc.date.accessioned | 2020-10-21T01:56:04Z | - |
dc.date.available | 2020-10-21T01:56:04Z | - |
dc.date.created | 2020-02-18 | - |
dc.date.created | 2020-02-18 | - |
dc.date.issued | 2020-03 | - |
dc.identifier.citation | ADVANCED ENERGY MATERIALS, v.10, no.9 | - |
dc.identifier.issn | 1614-6832 | - |
dc.identifier.uri | http://hdl.handle.net/10203/276753 | - |
dc.description.abstract | Replacing oxygen (O-2) with air is a critical step in the development of lithium (Li)-air batteries. A trace amount of carbon dioxide (CO2) in the air is, however, influentially involved in the O-2 chemistry, which indicates that a fundamental understanding of the effect of CO2 is required for the design of practical cells. When up to 30% CO2 is added to Li-O-2 cells, CO2 acts as an O-2(-) scavenger. Their chemical reactions form soluble products, CO42- and C2O62-, in the tetraglyme electrolyte solution, and enhance full capacity and cell cyclability. A critical challenge is, however, the sluggish decomposition of the coproduct Li2CO3 during recharge. To lower the charging overpotential, a Br-3(-)/Br-2 redox couple is incorporated and its redox behavior is investigated using spectroscopic methods. The redox shuttle of Br-3(-)/Br-2 decomposes amorphous Li2CO3 more efficiently than its crystalline counterpart. It is revealed that Br-2 combines with Br-3(-) to form a Br-2 center dot center dot center dot Br-3(-) complex, which acts as a mobile catalyst in the electrolyte solution without swift precipitation of the nonpolar Br-2. This comprehensive study, revealing the molecular structure and redox process of mobile catalysts, provides an insight into improving the design of redox couples toward superior cycling performance. | - |
dc.language | English | - |
dc.publisher | WILEY-V C H VERLAG GMBH | - |
dc.title | Mechanistic Study Revealing the Role of the Br-3(-)/Br-2 Redox Couple in CO2-Assisted Li-O-2 Batteries | - |
dc.type | Article | - |
dc.identifier.wosid | 000510473500001 | - |
dc.identifier.scopusid | 2-s2.0-85078893898 | - |
dc.type.rims | ART | - |
dc.citation.volume | 10 | - |
dc.citation.issue | 9 | - |
dc.citation.publicationname | ADVANCED ENERGY MATERIALS | - |
dc.identifier.doi | 10.1002/aenm.201903486 | - |
dc.contributor.localauthor | Byon, Hye Ryung | - |
dc.contributor.nonIdAuthor | Mota, Filipe Marques | - |
dc.contributor.nonIdAuthor | Kim, Dong Ha | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | bromide | - |
dc.subject.keywordAuthor | CO2 | - |
dc.subject.keywordAuthor | Li-air batteries | - |
dc.subject.keywordAuthor | Li-O-2 batteries | - |
dc.subject.keywordAuthor | redox mediators | - |
dc.subject.keywordPlus | LITHIUM-OXYGEN BATTERY | - |
dc.subject.keywordPlus | AIR BATTERY | - |
dc.subject.keywordPlus | APROTIC-SOLVENTS | - |
dc.subject.keywordPlus | ELECTROLYTE | - |
dc.subject.keywordPlus | RAMAN | - |
dc.subject.keywordPlus | HUMIDITY | - |
dc.subject.keywordPlus | BROMIDE | - |
dc.subject.keywordPlus | LI2CO3 | - |
dc.subject.keywordPlus | RECHARGEABILITY | - |
dc.subject.keywordPlus | OXIDATION | - |
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