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Formation Mechanism of Thiophosphate Anions in the Liquid-Phase Synthesis of Sulfide Solid Electrolytes Using Polar Aprotic Solvents
| Title: | Formation Mechanism of Thiophosphate Anions in the Liquid-Phase Synthesis of Sulfide Solid Electrolytes Using Polar Aprotic Solvents |
| Authors: | Calpa, Marcela Browse this author | | Rosero-Navarro, Nataly Carolina Browse this author | | Miura, Akira Browse this author →KAKEN DB | | Terai, Kota Browse this author | | Utsuno, Futoshi Browse this author | | Tadanaga, Kiyoharu Browse this author →KAKEN DB |
| Issue Date: | 24-Nov-2020 |
| Publisher: | American Chemical Society |
| Journal Title: | Chemistry of materials |
| Volume: | 32 |
| Issue: | 22 |
| Start Page: | 9627 |
| End Page: | 9632 |
| Publisher DOI: | 10.1021/acs.chemmater.0c03198 |
| Abstract: | Preparation of sulfide-based Li-ion conductive solid electrolytes by a liquid-phase process has been proposed as an effective route for industrial scaling-up. However, reaction mechanisms in the liquid-phase synthesis or the role of solvents in the reactions is not yet well understood. Here, the reaction between Li2S and P2S5 in the composition of 50:50 mol % mediated by a polar aprotic solvent (acetonitrile) was investigated. The study of the crystal and local structure of the 50Li(2)S.50P(2)S(5) sample revealed large chemical changes upon crystallization, highlighting the initial formation of a polymer-like (PS3-) n intermediate. On the basis of the (PS3-) n intermediate, the reaction pathways for the formation of P2S62-, PS43-, and P2S74- anions are elucidated. These findings give a deeper insight into the reaction mechanisms governing the liquid-phase synthesis of sulfide solid electrolytes and provide more specific criteria for designing novel materials with superior characteristics through this liquid-phase approach. |
| Rights: | This document is the Accepted Manuscript version of a Published Work that appeared in final form in Chemistry of Materials, copyright c American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://pubs.acs.org/doi/abs/10.1021/acs.chemmater.0c03198, see http://pubs.acs.org/page/policy/articlesonrequest/index.html. |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/83319 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: Nataly Carolina Rosero Navarro
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