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New Na-Ion Solid Electrolytes Na4- xSn1- xSbxS4 (0.02 ≤ x ≤ 0.33) for All-Solid-State Na-Ion Batteries

Title
New Na-Ion Solid Electrolytes Na4- xSn1- xSbxS4 (0.02 ≤ x ≤ 0.33) for All-Solid-State Na-Ion Batteries
Authors
Heo, Jong WookBanerjee, AbhikPark, Kern HoJung, Yoon SeokHong, Seung Tae
DGIST Authors
Hong, Seung Tae
Issue Date
ACCEPT
Citation
Advanced Energy Materials
Type
Article
Article Type
Article in Press
Keywords
Antimony compoundsChemical stabilityCrystal structureElectric batteriesElectrolytesIonic conduction in solidsIonic conductivityIonsSodium compoundsSolid state devicesSulfur compoundsTin compoundsTitanium compoundsAir stabilityAll-solid stateEnergy storage applicationsHigh capacityNa-ion batteriesSolid state batteriesStructural classSulfidesSolid electrolytes
ISSN
1614-6832
Abstract
Sulfide Na-ion solid electrolytes (SEs) are key to enable room-temperature operable all-solid-state Na-ion batteries that are attractive for large-scale energy storage applications. To date, few sulfide Na-ion SEs have been developed and most of the SEs developed contain P and suffer from poor chemical stability. Herein, discovery of a new structural class of tetragonal Na4- xSn1- xSbxS4 (0.02 ≤ x ≤ 0.33) with space group I41/acd is described. The evolution of a new phase, distinctly different from Na4SnS4 or Na3SbS4, allows fast ionic conduction in 3D pathways (0.2-0.5 mS cm-1 at 30 °C). Moreover, their excellent air stability and reversible dissolution in water and precipitation are highlighted. Specifically, TiS2/Na-Sn all-solid-state Na-ion batteries using Na3.75Sn0.75Sb0.25S4 demonstrates high capacity (201 mA h (g of TiS2)-1) with excellent reversibility. © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
URI
http://hdl.handle.net/20.500.11750/5771
DOI
10.1002/aenm.201702716
Publisher
Wiley-VCH Verlag
Related Researcher
  • Author Hong, Seung Tae Discovery Lab(Batteries & Materials Discovery Laboratory)
  • Research Interests
Files:
There are no files associated with this item.
Collection:
Energy Science and EngineeringDiscovery Lab(Batteries & Materials Discovery Laboratory)1. Journal Articles


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