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dc.contributor.author | Wang, Di | en |
dc.contributor.author | Takiyama, Masaya | en |
dc.contributor.author | Hwang, Jinkwang | en |
dc.contributor.author | Matsumoto, Kazuhiko | en |
dc.contributor.author | Hagiwara, Rika | en |
dc.contributor.alternative | 王, 帝 | ja |
dc.contributor.alternative | 滝山, 雅也 | ja |
dc.contributor.alternative | 黄, 珍光 | ja |
dc.contributor.alternative | 松本, 一彦 | ja |
dc.contributor.alternative | 萩原, 理加 | ja |
dc.date.accessioned | 2023-08-30T07:58:48Z | - |
dc.date.available | 2023-08-30T07:58:48Z | - |
dc.date.issued | 2023-08-11 | - |
dc.identifier.uri | http://hdl.handle.net/2433/284863 | - |
dc.description.abstract | Sodium secondary batteries have gained accolades as future energy storage devices due to their low costs and environmental benignity, but are heavily impeded by the poor anodic stabilities of most electrolytes, including solid-state electrolytes (SSE), that render them incompatible with high-voltage positive materials. This study reports, for the first time, a new synthesis technique using a fluorohydrogenate ionic liquid (IL)precursor to prepare a [DEME][PF₆] ([DEME]⁺: N, N-diethyl-N-methyl-N-(2-methoxyethyl) ammonium) with high yield and high purity. Herein, a Na[PF₆]-[DEME][PF₆] IL is formulated and subjected to a series of electrochemical tests to validate its performance in battery applications. The present IL harbors a strong oxidative stability (up to 5.2 V on Pt and >4.5 V on conductive carbon electrodes) that aids in the suppression of oxidative decompositions of one typical SSE, for example, beta alumina solid electrolyte (BASE), thereby extending their electrochemical window in hybrid SSE systems. A hybrid solid-state Na secondary battery employing a high voltage positive electrode, Na₃V₂(PO₄)₂F₃, is assembled using the BASE/IL configuration, and features energy density and superior cycling performance. This work demonstrates that sandwiching an SSE between the oxidatively stable [PF₆]⁻ IL can be an effective design for high voltage operation Na secondary batteries. | en |
dc.language.iso | eng | - |
dc.publisher | Wiley | en |
dc.rights | © 2023 The Authors. Advanced Energy Materials published by Wiley-VCH GmbH | en |
dc.rights | This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. | en |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | - |
dc.subject | anodic limits | en |
dc.subject | high voltage electrodes | en |
dc.subject | hybrid solid-state electrolytes | en |
dc.subject | ionic liquids | en |
dc.subject | sodium secondary batteries | en |
dc.title | A Hexafluorophosphate-Based Ionic Liquid as Multifunctional Interfacial Layer between High Voltage Positive Electrode and Solid-State Electrolyte for Sodium Secondary Batteries | en |
dc.type | journal article | - |
dc.type.niitype | Journal Article | - |
dc.identifier.jtitle | Advanced Energy Materials | en |
dc.identifier.volume | 13 | - |
dc.identifier.issue | 30 | - |
dc.relation.doi | 10.1002/aenm.202301020 | - |
dc.textversion | publisher | - |
dc.identifier.artnum | 2301020 | - |
dcterms.accessRights | open access | - |
datacite.awardNumber | 21H02047 | - |
datacite.awardNumber.uri | https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21H02047/ | - |
dc.identifier.pissn | 1614-6832 | - |
dc.identifier.eissn | 1614-6840 | - |
jpcoar.funderName | 日本学術振興会 | ja |
jpcoar.awardTitle | 固液二相電解質を用いた液体ナトリウム金属二次電池 | ja |
出現コレクション: | 学術雑誌掲載論文等 |
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