An Air‐Stable Na3SbS4 Superionic Conductor Prepared by a Rapid and Economic Synthetic Procedure |
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| Authors: | Dr Hui Wang Dr Yan Chen Zachary D Hood Dr Gayatri Sahu Dr Amaresh Samuthira Pandian Dr Jong Kahk Keum Dr Ke An Dr Chengdu Liang |
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| Affiliation: | 1. Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN, USA;2. Chemical and Engineering Materials Division, Oak Ridge National Laboratory, Oak Ridge, TN, USA;3. School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA, USA |
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| Abstract: | 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 °C and ideal compatibility with a metallic sodium anode. |
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| Keywords: | air-stable materials hard and soft acid and base theory (HSAB) ionic conductivity solid-state sodium batteries synthesis |
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