Transport properties of sulfide-conductive solid electrolyte in the system CaYb2S4-Yb2S3

Ананченко, Б. А.; Koshurnikova, E. V.; Kalinina, L. A.; Ushakova, Yu. N.; Bezdenezhnykh, L. A.

doi:10.1134/s1087659612040025

Cited by 3 publications

(2 citation statements)

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“…Except for the few cases described here, sulfur anions are generally reckoned to be an immobile species in solids, and their solid-state diffusion is scarcely documented. Nevertheless, Ushakova and co-workers carried out a series of attempts to evaluate diffusion constants of S 2– anions in solid electrolytes using Hebb-Wagner type cells and other electrochemical setups . According to their reports, several ternary sulfides ALn 2 S 4 (A = Ca, Ba; Ln = Sm, Gd, Yb) exhibited faster S 2– diffusion when doped with the binary sulfides Ln 2 S 3 , and the activation energy of S 2– diffusion could be much lower than 1.0 eV .…”

Section: “Zipper”-type Topochemistry Based On Anionic Redoxmentioning

confidence: 99%

Anionic Redox Topochemistry for Materials Design: Chalcogenides and Beyond

Sasaki,

Clarke,

Jobic

et al. 2023

ACS Org. Inorg. Au

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Topochemistry refers to a generic category of solidstate reactions in which precursors and products display strong filiation in their crystal structures. Various low-dimensional materials are subject to this stepwise structure transformation by accommodating guest atoms or molecules in between their 2D slabs or 1D chains loosely bound by van der Waals (vdW) interactions. Those processes are driven by redox reactions between guests and the host framework, where transition metal cations have been widely exploited as the redox center. Topochemistry coupled with this cationic redox not only enables technological applications such as Li-ion secondary batteries but also serves as a powerful tool for structural or electronic fine-tuning of layered transition metal compounds. Over recent years, we have been pursuing materials design beyond this cationic redox topochemistry that was mostly limited to 2D or 1D vdW systems. For this, we proposed new topochemical reactions of non-vdW compounds built of 2D arrays of anionic chalcogen dimers alternating with redox-inert host cationic layers. These chalcogen dimers were found to undergo redox reaction with external metal elements, triggering either (1) insertion of these metals to construct 2D metal chalcogenides or (2) deintercalation of the constituent chalcogen anions. As a whole, this topochemistry works like a "zipper", where reductive cleavage of anionic chalcogen−chalcogen bonds opens up spaces in non-vdW materials, allowing the formation of novel layered structures. This Perspective briefly summarizes seminal examples of unique structure transformations achieved by anionic redox topochemistry as well as challenges on their syntheses and characterizations.

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Section: “Zipper”-type Topochemistry Based On Anionic Redoxmentioning

confidence: 99%

Anionic Redox Topochemistry for Materials Design: Chalcogenides and Beyond

Sasaki,

Clarke,

Jobic

et al. 2023

ACS Org. Inorg. Au

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“…As objects of studies, we chose sulfide conducting SEs based on CaYb 2 S 4 and BaSm 2 S 4 belonging to the class of alkaline earth thiolanthanates, which can be sulfide ion conductors [1,2]. The influence of the method for the preparation of oxide precursors on the temperature range of sulfide phases, their morphology, and electrophysical and electrochemical properties was studied.…”

Section: Introductionmentioning

confidence: 99%

Effect of the method for the preparation of the oxide precursor on the electrolytic properties of sulfide-conducting solid electrolytes

et al. 2015

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Solid solutions (SSs) based on CaYb 2 S 4 (Yb 3 S 4 structural type) and BaSm 2 S 4 (CaFe 2 O 4 structural type) were prepared using the ceramic and chemical methods for the preparation of oxide precursors. The samples were certified by XRD and electron microscopy. The electric conductivity and thermal stability of the samples were studied. The electron transport numbers were determined by the Hebb-Wagner method.

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