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DC Field | Value | Language |
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dc.citation.startPage | 232657 | - |
dc.citation.title | JOURNAL OF POWER SOURCES | - |
dc.citation.volume | 559 | - |
dc.contributor.author | Moon, Eun Jeong | - |
dc.contributor.author | Hong, Jeong Ki | - |
dc.contributor.author | Mohanty, Sangram Keshari | - |
dc.contributor.author | Yang, Mihyun | - |
dc.contributor.author | Ihm, Kyuwook | - |
dc.contributor.author | Lee, Hosik | - |
dc.contributor.author | Yoo, Hyun Deog | - |
dc.date.accessioned | 2023-12-21T12:48:59Z | - |
dc.date.available | 2023-12-21T12:48:59Z | - |
dc.date.created | 2023-03-02 | - |
dc.date.issued | 2023-03 | - |
dc.description.abstract | Lithium titanate (Li4Ti5O12; LTO) is a promising anode material for fast (dis)charging Li-ion batteries (LIBs). However, its low Li diffusion coefficient and electronic conductivity limit its applications. Here, we uniformly coat the LTO surface with a 1.6 nm layer of partially lithiated titania (LixTiO2, x approximate to 0.5), which is found to be a mixed ionic-electronic conductor (MIEC), using a simple solid-state method. The MIEC layer simultaneously transfers electrons and Li-ions, facilitating efficient charge transfer to (de)lithiate LTO over the entire particle surface. MIEC-nanocoated LTO exhibits highly improved capacity retention and rate capability than pristine LTO; based on electrochemical simulations, MIEC nanocoating causes performance enhancement by maximum surface-area utilization for charge transfer. Furthermore, electrochemical impedance spectroscopy and density functional theory calculations confirm facile ionic transport and high electronic conductivity of LixTiO2 nano -layer. This general strategy of MIEC nanocoating can boost the electrochemical performances of various insu-lating electrodes, maximizing the materials utilization. | - |
dc.identifier.bibliographicCitation | JOURNAL OF POWER SOURCES, v.559, pp.232657 | - |
dc.identifier.doi | 10.1016/j.jpowsour.2023.232657 | - |
dc.identifier.issn | 0378-7753 | - |
dc.identifier.scopusid | 2-s2.0-85146271191 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/62254 | - |
dc.identifier.wosid | 000923154500001 | - |
dc.language | 영어 | - |
dc.publisher | ELSEVIER | - |
dc.title | Coating lithium titanate anodes with a mixed ionic-electronic conductor for high-rate lithium-ion batteries | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials Science, Multidisciplinary | - |
dc.relation.journalResearchArea | Chemistry; Electrochemistry; Energy & Fuels; Materials Science | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | Lithium-ion batteries | - |
dc.subject.keywordAuthor | Lithium titanate | - |
dc.subject.keywordAuthor | Coating | - |
dc.subject.keywordAuthor | Mixed ionic-electronic conductor | - |
dc.subject.keywordAuthor | Fast charging | - |
dc.subject.keywordPlus | RATE CAPABILITY | - |
dc.subject.keywordPlus | LI4TI5O12 | - |
dc.subject.keywordPlus | INSERTION | - |
dc.subject.keywordPlus | CHALLENGES | - |
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