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dc.contributor.author | Yamamoto, Takayuki | en |
dc.contributor.author | Nishijima, Shu | en |
dc.contributor.author | Nohira, Toshiyuki | en |
dc.contributor.alternative | 山本, 貴之 | ja |
dc.contributor.alternative | 西島, 士湧 | ja |
dc.contributor.alternative | 野平, 俊之 | ja |
dc.date.accessioned | 2021-02-22T07:34:06Z | - |
dc.date.available | 2021-02-22T07:34:06Z | - |
dc.date.issued | 2020-09-24 | - |
dc.identifier.issn | 1520-6106 | - |
dc.identifier.issn | 1520-5207 | - |
dc.identifier.uri | http://hdl.handle.net/2433/261732 | - |
dc.description.abstract | We systematically evaluated the physicochemical properties of a series of M[FTA]–[C₄C₁pyrr][FTA] ionic liquids (ILs) (M = alkali metal, FTA = (fluorosulfonyl)(trifluoromethylsulfonyl)amide, C₄C₁pyrr = N-butyl-N-methylpyrrolidinium) as electrolytes for alkali metal-ion batteries. First, the viscosity (η), ionic conductivity (σ), and density (ρ) of the M[FTA]–[C₄C₁pyrr][FTA] ILs at x(M[FTA]) = 0.20 (x(M[FTA]) = molar fraction of M[FTA]) were measured. The σ values ranged from 1–3 mS cm⁻¹ at 298 K and increased as follows: Na < Li < K < Rb < Cs, which indicated that the Li-based IL did not obey the trend predicted by the charge densities of alkali metal cations. Second, the Li-based IL exhibited slightly lower vertical intercept values than the other FTA-based ILs in the Walden plots obtained using the results of η, σ, and ρ measurements. Third, the electrochemical stability of the ILs was investigated by cyclic voltammetry, and the redox potentials of the alkali metals (E(M⁺/M)) were determined. The E(M⁺/M) values of the FTA-based ILs increased as follows: Cs < Rb < K < Li < Na. Subsequently, we compared the obtained E(M⁺/M) values with those of other general electrolytes, such as propylene carbonate (PC)-based electrolytes and aqueous solutions. The trend in E(M⁺/M) values of the FTA-based ILs was similar to that of PC-based electrolytes and was significantly different from that of aqueous solutions. In particular, the FTA- and FSA-based ILs (FSA = bis(fluorosulfonyl)amide) presented the most negative E(Na⁺/Na) and E(K⁺/K) values among various electrolytes, which indicated that utilization of these IL electrolytes for the development of Na- and K-ion batteries would present significant advantages. | en |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | American Chemical Society (ACS) | en |
dc.rights | This document is the Accepted Manuscript version of a Published Work that appeared in final form in The Journal of Physical Chemistry B, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acs.jpcb.0c06578. | en |
dc.rights | The full-text file will be made open to the public on 2 September 2021 in accordance with publisher's 'Terms and Conditions for Self-Archiving'. | en |
dc.rights | この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。 | ja |
dc.rights | This is not the published version. Please cite only the published version. | en |
dc.title | Comparative study of M[N(SO₂F)(SO₂CF₃)]–[N-butyl-N-methylpyrroridinium][N(SO₂F)(SO₂CF₃)] (M = Li, Na, K, Rb, Cs) ionic liquid electrolytes | en |
dc.type | journal article | - |
dc.type.niitype | Journal Article | - |
dc.identifier.jtitle | The Journal of Physical Chemistry B | en |
dc.identifier.volume | 124 | - |
dc.identifier.issue | 38 | - |
dc.identifier.spage | 8380 | - |
dc.identifier.epage | 8387 | - |
dc.relation.doi | 10.1021/acs.jpcb.0c06578 | - |
dc.textversion | author | - |
dc.address | Institute of Advanced Energy, Kyoto University | en |
dc.address | Institute of Advanced Energy, Kyoto University | en |
dc.address | Institute of Advanced Energy, Kyoto University | en |
dc.identifier.pmid | 32876457 | - |
dcterms.accessRights | open access | - |
datacite.date.available | 2021-09-02 | - |
datacite.awardNumber | JP18K14320 | - |
jpcoar.funderName | 日本学術振興会 | ja |
jpcoar.funderName.alternative | Japan Society for the Promotion of Science (JSPS) | en |
出現コレクション: | 学術雑誌掲載論文等 |
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