Observation of Liquid Phase Synthesis of Sulfide Solid Electrolytes Using Time‐Resolved Pair Distribution Function Analysis. Issue 11 (15th June 2020)

• Record Type: Journal Article
• Authors: Ohara, Koji; Masuda, Naoya; Yamaguchi, Hiroshi; Yao, Atsushi; Tominaka, Satoshi; Yamada, Hiroki; Hiroi, Satoshi; Takahashi, Masakuni; Yamamoto, Kentaro; Wakihara, Toru; Uchimoto, Yoshiharu; Utsuno, Futoshi; Kimura, Shigeru
• Other Names: Hosokawa Shinya guestEditor.
• Is Part Of: Physica status solidi. Volume 257:Issue 11(2020)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2020-06-15
• Subjects: liquid phase synthesis -- sulfide solid electrolytes -- time-resolved pair distribution function analysis; Solid state physics -- Periodicals; Solids -- Periodicals; Atomic structure -- Periodicals; 530.41
• DOI: 10.1002/pssb.202000106
• Languages: English
• ISSNs: 0370-1972

Abstract

Abstract : Time‐resolved pair distribution function (PDF) analysis is performed to clarify the formation mechanism of Li3 PS4 sulfide solid electrolytes in liquid phase synthesis with acetonitrile (AN), tetrahydrofuran (THF), and ethyl acetate (EA) solvents. This aims to clarify the relationship between their formations and lithium ionic conductivity. A complex is formed between the precursor of the sulfide solid electrolyte and each solvent during the liquid phase synthesis. The ratio of the solvent to the electrolyte is 3.03 in THF solution. The formation speed of precursors of sulfide solid electrolytes increases in the order AN < THF < EA solution, which is the same order as the lithium ionic conductivity. Thus, the correlation between the ionic conductivity and the formation rate of the precursor of the sulfide solid electrolyte might be related to the stability of the complex formed between Li3 PS4 and the solvent during liquid phase synthesis. Abstract : Li3 PS4 sulfide solid electrolyte is a well‐known superionic conductor with high ionic conductivity and is a key material in the realization of all‐solid‐state lithium batteries. Time‐resolved pair distribution function analysis is performed to clarify the formation mechanism of the sulfide electrolyte in liquid phase synthesis with various solvents.