Full metadata record
DC Field | Value | Language |
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dc.contributor.author | Jeong, Wooyoung | - |
dc.contributor.author | Joo, Hyeonseo | - |
dc.contributor.author | Kim, Chaejeong | - |
dc.contributor.author | Jung, Kyu-Nam | - |
dc.contributor.author | Lee, Ju-Hyuck | - |
dc.contributor.author | Lee, Jong-Won | - |
dc.date.accessioned | 2023-07-04T16:10:24Z | - |
dc.date.available | 2023-07-04T16:10:24Z | - |
dc.date.created | 2023-04-13 | - |
dc.date.issued | 2023-06 | - |
dc.identifier.issn | 0013-4686 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.11750/46096 | - |
dc.description.abstract | Solid-state batteries have been proposed as an alternative to conventional lithium-ion batteries to resolve safety issues. Biphasic solid electrolytes (BSEs) based on Li7La3Zr2O12 (LLZO) and a polymer phase have been widely studied because LLZO has high Li+ conductivity and chemical/electrochemical compatibility with Li metal. However, LLZO reacts with H2O and CO2 during storage in air, forming lithium carbonate (Li2CO3) layers on the surface. The extremely low Li+ conductivity of Li2CO3 degrades the Li+-conduction properties of LLZO-based BSEs. Herein, we propose an effective approach to improve the air-stability of LLZO via encapsulation with a hydrophobicity-tailored, Li+-conducting polymer nanolayer. Polyurethane-based polymers are designed to have high hydrophobicity by tuning soft segments and chain extenders and successfully encapsulate the LLZO surface with a thickness of ∼10 nm (P-LLZO). Accelerated durability tests (ADTs) under controlled concentrations of O2, H2O, and CO2 indicate that LLZO encapsulation with hydrophobic polymer effectively mitigates storage-induced degradation by preventing direct contact between LLZO and H2O/CO2. ADT-tested P-LLZO BSE exhibits higher ionic conductivity (σ = 1.3 × 10−4 S cm−1 at 60 °C) compared with that of ADT-tested LLZO BSE (σ = 3.6 × 10−5 S cm−1). A solid-state Li battery with ADT-tested P-LLZO BSE shows enhanced cycling stability than that with ADT-tested LLZO BSE, proving the efficacy of polymer encapsulation. The findings are essential for understanding the role of interfacial engineering in mitigating the degradation of Li+-conduction properties and developing highly conductive LLZO-based BSEs. © 2023 | - |
dc.language | English | - |
dc.publisher | Elsevier Ltd | - |
dc.title | Suppressing storage-induced degradation of Li7La3Zr2O12 via encapsulation with hydrophobicity-tailored polymer nanolayer | - |
dc.type | Article | - |
dc.identifier.doi | 10.1016/j.electacta.2023.142358 | - |
dc.identifier.wosid | 000976827400001 | - |
dc.identifier.scopusid | 2-s2.0-85151550340 | - |
dc.identifier.bibliographicCitation | Electrochimica Acta, v.453 | - |
dc.description.isOpenAccess | FALSE | - |
dc.subject.keywordAuthor | Polymer encapsulation | - |
dc.subject.keywordAuthor | Polyurethane | - |
dc.subject.keywordAuthor | Biphasic solid electrolytes | - |
dc.subject.keywordAuthor | Li7La3Zr2O12 | - |
dc.subject.keywordAuthor | Lithium carbonates | - |
dc.subject.keywordPlus | SOLID-ELECTROLYTE | - |
dc.subject.keywordPlus | BATTERIES | - |
dc.subject.keywordPlus | POLYURETHANE | - |
dc.subject.keywordPlus | CONDUCTIVITY | - |
dc.subject.keywordPlus | STABILITY | - |
dc.subject.keywordPlus | INTERFACIAL RESISTANCE | - |
dc.subject.keywordPlus | IMPEDANCE | - |
dc.subject.keywordPlus | PROGRESS | - |
dc.citation.title | Electrochimica Acta | - |
dc.citation.volume | 453 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Electrochemistry | - |
dc.relation.journalWebOfScienceCategory | Electrochemistry | - |
dc.type.docType | Article | - |
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