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Title: Exceptionally High Ionic Conductivity in Na 3 P 0.62 As 0.38 S 4 with Improved Moisture Stability for Solid-State Sodium-Ion Batteries

Journal Article · · Advanced Materials
 [1];  [2];  [2];  [1];  [3];  [2];  [1];  [3];  [4];  [2];  [1]
  1. Department of Mechanical and Nuclear Engineering, The Pennsylvania State University, University Park PA 16802 USA
  2. Department of Materials Science and Engineering, The Pennsylvania State University, University Park PA 16802 USA
  3. Chemical Sciences and Engineering Division, Argonne National Laboratory, Argonne IL 60439 USA
  4. Energy & Environment Directorate, Pacific Northwest National Laboratory, Richland WA 99352 USA
+ Show Author Affiliations

A Na-ion solid-state electrolyte, Na3P0.62As0.38S4, is developed with an exceptionally high conductivity of 1.46 mS cm-1 at 25 degrees C and enhanced moisture stability. Dual effects of alloying element As (lattice expansion and a weaker As. S bond strength) are responsible for the superior conductivity. Improved moisture stability is regulated by shifting low-energy moisture reactions to high-energy ones due to As.

Research Organization:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Electricity (OE); USDOE Office of Energy Efficiency and Renewable Energy (EERE)
DOE Contract Number:
AC02-06CH11357
OSTI ID:
1462492
Journal Information:
Advanced Materials, Vol. 29, Issue 16; ISSN 0935-9648
Publisher:
Wiley
Country of Publication:
United States
Language:
English

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