4.3 Article

Formation of Li2S-P2S5 Solid Electrolyte from N-Methylformamide Solution

Journal

CHEMISTRY LETTERS
Volume 42, Issue 11, Pages 1435-1437

Publisher

CHEMICAL SOC JAPAN
DOI: 10.1246/cl.130726

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Funding

  1. Japan Science and Technology Agency (JST)
  2. Core Research for Evolutional Science and Technology (CREST) project
  3. Ministry of Education, Culture, Sports, Science and Technology of Japan
  4. Grants-in-Aid for Scientific Research [11J09752] Funding Source: KAKEN

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Li2S-P2S5 solid electrolyte (SE) powders were successfully reprecipitated from a liquid phase. Powders of 80Li(2)S center dot 20P(2)S(5) (mol %) SE originally prepared by mechanical milling were dissolved in N-methylformamide (NMF) and a homogeneous solution was obtained. The NMF solution was dried at 150 degrees C for 3 h under vacuum to obtain precipitates. The main structural unit in the obtained powder was PS43-. The crystalline phase of the powders was confirmed to be Li3PS4, and ionic conductivity was 2.6 x 10(-6) cm(-1).

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