Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 55, Issue 30, Pages 8551-8555Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201601546
Keywords
air-stable materials; hard and soft acid and base theory (HSAB); ionic conductivity; solid-state sodium batteries; synthesis
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Funding
- Division of Materials Sciences and Engineering, Office of Basic Energy Sciences, U.S. DOE
- Scientific User Facilities Division, Office of Basic Energy Sciences, U.S. DOE
- National Science Foundation [DGE-1148903]
- Georgia Tech-ORNL Fellowship
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All-solid-state sodium batteries, using solid electrolyte and abundant sodium resources, show great promise for safe, low-cost, and large-scale energy storage applications. The exploration of novel solid electrolytes is critical for the room temperature operation of all-solid-state Na batteries. An ideal solid electrolyte must have high ionic conductivity, hold outstanding chemical and electrochemical stability, and employ low-cost synthetic methods. Achieving the combination of these properties is a grand challenge for the synthesis of sulfide-based solid electrolytes. Design of the solid electrolyte Na3SbS4 is described, realizing excellent air stability and an economic synthesis based on hard and soft acid and base (HSAB) theory. This new solid electrolyte also exhibits a remarkably high ionic conductivity of 1 mS cm(-1) at 25 degrees C and ideal compatibility with a metallic sodium anode.
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