The natural critical current density limit for Li7La3Zr2O12 garnets
dc.bibliographicCitation.firstPage | 15782 | eng |
dc.bibliographicCitation.issue | 31 | eng |
dc.bibliographicCitation.journalTitle | Journal of materials chemistry : A, Materials for energy and sustainability | eng |
dc.bibliographicCitation.lastPage | 15788 | eng |
dc.bibliographicCitation.volume | 8 | eng |
dc.contributor.author | Flatscher, Florian | |
dc.contributor.author | Philipp, Martin | |
dc.contributor.author | Ganschow, Steffen | |
dc.contributor.author | Wilkening, H. Martin R. | |
dc.contributor.author | Rettenwander, Daniel | |
dc.date.accessioned | 2021-11-09T06:47:45Z | |
dc.date.available | 2021-11-09T06:47:45Z | |
dc.date.issued | 2020 | |
dc.description.abstract | Ceramic batteries equipped with Li-metal anodes are expected to double the energy density of conventional Li-ion batteries. Besides high energy densities, also high power is needed when batteries have to be developed for electric vehicles. Practically speaking, so-called critical current densities (CCD) higher than 3 mA cm-2 are needed to realize such systems. As yet, this value has, however, not been achieved for garnet-type Li7La3Zr2O12 (LLZO) being one of the most promising ceramic electrolytes. Most likely, CCD values are influenced by the area specific resistance (ASR) governing ionic transport across the Li|electrolyte interface. Here, single crystals of LLZO with adjusted ASR are used to quantify this relationship in a systematic manner. It turned out that CCD values exponentially decrease with increasing ASR. The highest obtained CCD value was as high as 280 µA cm-2. This value should be regarded as the room-temperature limit for LLZO when no external pressure is applied. Concluding, for polycrystalline samples either stack pressure or a significant increase of the interfacial area is needed to reach current densities equal or higher than the above-mentioned target value. This journal is © The Royal Society of Chemistry. | eng |
dc.description.version | publishedVersion | eng |
dc.identifier.uri | https://oa.tib.eu/renate/handle/123456789/7210 | |
dc.identifier.uri | https://doi.org/10.34657/6257 | |
dc.language.iso | eng | eng |
dc.publisher | London [u.a.] : RSC | eng |
dc.relation.doi | https://doi.org/10.1039/c9ta14177d | |
dc.relation.essn | 2050-7496 | |
dc.rights.license | CC BY 3.0 Unported | eng |
dc.rights.uri | https://creativecommons.org/licenses/by/3.0/ | eng |
dc.subject.ddc | 540 | eng |
dc.subject.ddc | 530 | eng |
dc.subject.other | critical current densities (CCD) | eng |
dc.subject.other | area specific resistance (ASR) | eng |
dc.subject.other | ceramic batteries | eng |
dc.title | The natural critical current density limit for Li7La3Zr2O12 garnets | eng |
dc.type | Article | eng |
dc.type | Text | eng |
tib.accessRights | openAccess | eng |
wgl.contributor | IKZ | eng |
wgl.subject | Chemie | eng |
wgl.type | Zeitschriftenartikel | eng |
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