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A Structurally Flexible Halide Solid Electrolyte with High Ionic Conductivity and Air Processability

Karkera, Guruprakash 1; Soans, Mervyn 1; Akbaş, Ayça; Witter, Raiker 2; Euchner, Holger; Diemant, Thomas 1; Cambaz, Musa Ali 1; Meng, Zhen 2; Dasari, Bosubabu 2; Chandrappa, Shivaraju Guddehalli 1; Menezes, Prashanth W.; Fichtner, Maximilian 2
1 Helmholtz-Institut Ulm (HIU), Karlsruher Institut für Technologie (KIT)
2 Institut für Nanotechnologie (INT), Karlsruher Institut für Technologie (KIT)

Abstract:

In this work, a structurally revivable, chloride-ion conducting solid electrolyte (SE), CsSn0.9In0.067Cl3, with a high ionic conductivity of 3.45 × 104 S cm1 at 25 °C is investigated. The impedance spectroscopy, density functional theory, solid-state 35Cl NMR, and electron paramagnetic resonance studies collectively reveal that the high Cl ionic mobility originates in the flexibility of the structural building blocks, Sn/InCl6 octahedra. The vacancy-dominated Cl ion diffusion encompasses co-ordinated Sn/In(Cl) site displacements that depend on the exact stoichiometry, and are accompanied by changes in the local magnetic moments. Owing to these promising properties, the suitability of the CsSn0.9In0.067Cl3, as an electrolyte is demonstrated by designing all-solid-state batteries, with different anodes and cathodes. The comparative investigation of interphases with Li, Li–In, Mg, and Ca anodes reveals different levels of reactivity and interphase formation. The CsSn0.9In0.067Cl3 demonstrates an excellent humidity tolerance (up to 50% relative humidity) in ambient air, maintaining high structural integrity without compromises in ionic conductivity, which stands in contrast to commercial halide-based lithium conductors. ... mehr

Zugehörige Institution(en) am KIT Helmholtz-Institut Ulm (HIU)
Institut für Nanotechnologie (INT)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2023
Sprache Englisch
Identifikator ISSN: 1614-6832, 1614-6840
KITopen-ID: 1000160180
HGF-Programm 38.02.01 (POF IV, LK 01) Fundamentals and Materials
Erschienen in Advanced Energy Materials
Verlag Wiley-VCH Verlag
Band 13
Heft 30
Seiten Art.-Nr.: 2300982
Vorab online veröffentlicht am 11.06.2023
Schlagwörter all solid-state batteries, cesium tin chloride, chloride-ion conduction, halide solid electrolytes, ion transport in halide perovskites, solid-state 35Cl NMR
Nachgewiesen in Dimensions
Web of Science
Scopus
OpenAlex
Globale Ziele für nachhaltige Entwicklung Ziel 7 – Bezahlbare und saubere EnergieZiel 11 – Nachhaltige Städte und Gemeinden

Verlagsausgabe §
DOI: 10.5445/IR/1000160180
Veröffentlicht am 05.07.2023
Originalveröffentlichung
DOI: 10.1002/aenm.202300982
Scopus
Zitationen: 10
Web of Science
Zitationen: 10
Dimensions
Zitationen: 11
Seitenaufrufe: 135
seit 05.07.2023
Downloads: 86
seit 06.07.2023
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