Mechanochemically Prepared Highly Conductive Na2.88Sb0.88W0.12S4-NaI Composite Electrolytes for All-Solid-State Sodium Battery

Mechanochemically Prepared Highly Conductive Na2.88Sb0.88W0.12S4-NaI Composite Electrolytes for All-Solid-State Sodium Battery

Solid electrolytes with high ionic conductivity, high formability, and high electrochemical properties are required to improve the performance of all-solid-state sodium batteries. In this study, we focus on a combination of Na2.88Sb0.88W0.12S4 and NaI for preparing composite electrolytes Na2.88Sb0.8...

Full description

Bibliographic Details
Main Authors: Takuma TAKAYANAGI, Akira NASU, Fumika TSUJI, Atsushi SAKUDA, Masahiro TATSUMISAGO, Akitoshi HAYASHI
Format: Article
Language:English
Published: The Electrochemical Society of Japan 2022-04-01
Series:Electrochemistry
Subjects:
solid electrolyte
all-solid-state sodium battery
sulfide
composite
Online Access:https://www.jstage.jst.go.jp/article/electrochemistry/90/4/90_22-00016/_html/-char/en
Description
Summary:Solid electrolytes with high ionic conductivity, high formability, and high electrochemical properties are required to improve the performance of all-solid-state sodium batteries. In this study, we focus on a combination of Na2.88Sb0.88W0.12S4 and NaI for preparing composite electrolytes Na2.88Sb0.88W0.12S4·xNaI, and investigate their crystal structures, microstructures, and electrochemical properties. NaI is uniformly dispersed in the composites without forming a solid solution with Na2.88Sb0.88W0.12S4. Na2.88Sb0.88W0.12S4·0.50NaI shows a high ionic conductivity of 3.6 × 10−2 S cm−1 after sintering at 275 °C for only 1.5 h. The charge-discharge characteristics of all-solid-state cells using the Na2.88Sb0.88W0.12S4·xNaI composite are also improved.
ISSN:2186-2451

Similar Items