4.8 Article

Exceptionally High Ionic Conductivity in Na3P0.62As0.38S4 with Improved Moisture Stability for Solid-State Sodium-Ion Batteries

Journal

ADVANCED MATERIALS
Volume 29, Issue 16, Pages -

Publisher

WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201605561

Keywords

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Funding

  1. U.S. Department of Energy's (DOE's) Office of Electricity Delivery AMP
  2. Energy Reliability (OE) [57558]
  3. National Science Foundation (NSF) [DMR-1310289, DMR-1610430]
  4. Office of Science of the U.S. DOE [DE-AC02-05CH11231]
  5. NSF [ACI-1053575]
  6. U.S. DOE's Office of Energy Efficiency and Renewable Energy from the Vehicle Technologies Office [DE-AC02-06CH11357]
  7. U.S. DOE's Office of Basic Energy Efficiency and Renewable Energy [DE-AC02-06CH11357]
  8. Division Of Materials Research
  9. Direct For Mathematical & Physical Scien [1610430] Funding Source: National Science Foundation

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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.

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