Interface and grain boundary resistance of a lithium lanthanum titanate (Li3xLa2/3−xTiO3, LLTO) solid electrolyte.
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| Title: | Interface and grain boundary resistance of a lithium lanthanum titanate (Li3xLa2/3−xTiO3, LLTO) solid electrolyte. |
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| Authors: | Uhlmann, C.1 christian.uhlmann@kit.edu, Braun, P.1, Illig, J.2, Weber, A.1, Ivers-Tiffée, E.1 |
| Source: | Journal of Power Sources. Mar2016, Vol. 307, p578-586. 9p. |
| Subjects: | Solid electrolytes, Crystal grain boundaries, Lithium-ion batteries, Lanthanum titanate, Lanthanum compounds, Lanthanum oxide, Kirkendall effect |
| Abstract: | Advanced experimental setups and measurement techniques are crucial for investigating and systematically improving interface characteristics. In this study we introduce an interface-cell, which allows the systematic analysis of liquid/solid electrolyte interfaces via four-point measurements. The functionality of this setup is demonstrated by analysing the impact of parameter variations on the aqueous interface of lithium lanthanum titanate (Li 3x La 2/3−x TiO 3 , LLTO) solid electrolytes as used in Lithium–air batteries. By variation of real operating conditions their impact on cycling performance is highlighted. Examples include temperature (0 to +25 °C) and state of charge (SoC), which induces an alteration of pH (here pH ≈ 6–14) and Li + -concentration (here 0.057 mol L −1 to 10.62 mol L −1 ). Interestingly, a change of the polarization resistance greater than two orders of magnitude (250 Ωcm 2 –25,000 Ωcm 2 ) could be identified. The proven dependency of the interface to both the pH and Li + -concentration is explained by an H + /Li + -exchange reaction at the LLTO/H 2 O-interface. Additionally, we were able to determine the solely grain boundary resistance (∼250 Ωcm 2 at 25 °C) of the LLTO samples, without the impact of blocking electrodes. A temperature variation revealed the activation energies of the processes to be 0.4 eV (grain boundary) and 0.46 eV (interface). These results were then critically evaluated in the context of aqueous Lithium–air batteries. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Power Sources is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 112826244 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Interface and grain boundary resistance of a lithium lanthanum titanate (Li3xLa2/3−xTiO3, LLTO) solid electrolyte. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Uhlmann%2C+C%2E%22">Uhlmann, C.</searchLink><relatesTo>1</relatesTo><i> christian.uhlmann@kit.edu</i><br /><searchLink fieldCode="AR" term="%22Braun%2C+P%2E%22">Braun, P.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Illig%2C+J%2E%22">Illig, J.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Weber%2C+A%2E%22">Weber, A.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Ivers-Tiffée%2C+E%2E%22">Ivers-Tiffée, E.</searchLink><relatesTo>1</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Power+Sources%22">Journal of Power Sources</searchLink>. Mar2016, Vol. 307, p578-586. 9p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Solid+electrolytes%22">Solid electrolytes</searchLink><br /><searchLink fieldCode="DE" term="%22Crystal+grain+boundaries%22">Crystal grain boundaries</searchLink><br /><searchLink fieldCode="DE" term="%22Lithium-ion+batteries%22">Lithium-ion batteries</searchLink><br /><searchLink fieldCode="DE" term="%22Lanthanum+titanate%22">Lanthanum titanate</searchLink><br /><searchLink fieldCode="DE" term="%22Lanthanum+compounds%22">Lanthanum compounds</searchLink><br /><searchLink fieldCode="DE" term="%22Lanthanum+oxide%22">Lanthanum oxide</searchLink><br /><searchLink fieldCode="DE" term="%22Kirkendall+effect%22">Kirkendall effect</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Advanced experimental setups and measurement techniques are crucial for investigating and systematically improving interface characteristics. In this study we introduce an interface-cell, which allows the systematic analysis of liquid/solid electrolyte interfaces via four-point measurements. The functionality of this setup is demonstrated by analysing the impact of parameter variations on the aqueous interface of lithium lanthanum titanate (Li 3x La 2/3−x TiO 3 , LLTO) solid electrolytes as used in Lithium–air batteries. By variation of real operating conditions their impact on cycling performance is highlighted. Examples include temperature (0 to +25 °C) and state of charge (SoC), which induces an alteration of pH (here pH ≈ 6–14) and Li + -concentration (here 0.057 mol L −1 to 10.62 mol L −1 ). Interestingly, a change of the polarization resistance greater than two orders of magnitude (250 Ωcm 2 –25,000 Ωcm 2 ) could be identified. The proven dependency of the interface to both the pH and Li + -concentration is explained by an H + /Li + -exchange reaction at the LLTO/H 2 O-interface. Additionally, we were able to determine the solely grain boundary resistance (∼250 Ωcm 2 at 25 °C) of the LLTO samples, without the impact of blocking electrodes. A temperature variation revealed the activation energies of the processes to be 0.4 eV (grain boundary) and 0.46 eV (interface). These results were then critically evaluated in the context of aqueous Lithium–air batteries. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Power Sources is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.jpowsour.2016.01.002 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 9 StartPage: 578 Subjects: – SubjectFull: Solid electrolytes Type: general – SubjectFull: Crystal grain boundaries Type: general – SubjectFull: Lithium-ion batteries Type: general – SubjectFull: Lanthanum titanate Type: general – SubjectFull: Lanthanum compounds Type: general – SubjectFull: Lanthanum oxide Type: general – SubjectFull: Kirkendall effect Type: general Titles: – TitleFull: Interface and grain boundary resistance of a lithium lanthanum titanate (Li3xLa2/3−xTiO3, LLTO) solid electrolyte. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Uhlmann, C. – PersonEntity: Name: NameFull: Braun, P. – PersonEntity: Name: NameFull: Illig, J. – PersonEntity: Name: NameFull: Weber, A. – PersonEntity: Name: NameFull: Ivers-Tiffée, E. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 03 Text: Mar2016 Type: published Y: 2016 Identifiers: – Type: issn-print Value: 03787753 Numbering: – Type: volume Value: 307 Titles: – TitleFull: Journal of Power Sources Type: main |
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