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Title: A Quaternary Sodium Superionic Conductor - Na10.8Sn1.9PS11.8

Journal Article · · Nano Energy
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  1. The Pennsylvania State Univ., University Park, PA (United States)
  2. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)

Sulfide-based Na-ion conductors are promising candidates as solid-state electrolytes (SSEs) for fabrication of solid-state Na-ion batteries (NIBs) because of their high ionic conductivities and low grain boundary resistance. Currently, most of the sulfide-based Na-ion conductors with high conductivities are focused on Na3PS4 phases and its derivatives. It is desirable to develop Na-ion conductors with new composition and crystal structure to achieve superior ionic conductivities. Here we report a new quaternary Na-ion conductor, Na10.8Sn1.9PS11.8, exhibiting a high ionic conductivity of 0.67 mS cm–1 at 25 °C. This high ionic conductivity originates from the presence of a large number of intrinsic Na-vacancies and three-dimensional Na-ion conduction pathways, which has been confirmed by single-crystal X-ray diffraction and first-principles calculations. In conclusion, the Na10.8Sn1.9PS11.8 phase is further evaluated as an electrolyte in a Na-Sn alloy/TiS2 battery, demonstrating its potential application in all-solid-state NIBs.

Research Organization:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE Office of Electricity (OE)
Grant/Contract Number:
AC05-76RL01830; 70247; AC02-05CH11231
OSTI ID:
1420439
Alternate ID(s):
OSTI ID: 1703970
Report Number(s):
PNNL-SA-136565; PII: S2211285518300557; TRN: US1801496
Journal Information:
Nano Energy, Vol. 47; ISSN 2211-2855
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 40 works
Citation information provided by
Web of Science

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Cited By (9)

Salt-Based Organic-Inorganic Nanocomposites: Towards A Stable Lithium Metal/Li 10 GeP 2 S 12 Solid Electrolyte Interface journal September 2018
Nonaqueous Sodium‐Ion Full Cells: Status, Strategies, and Prospects journal March 2019
Na 1.5 La 1.5 TeO 6 : Na + conduction in a novel Na-rich double perovskite journal January 2018
Recent Research on Strategies to Improve Ion Conduction in Alkali Metal‐Ion Batteries journal April 2019
Mechanochemical synthesis of fast sodium ion conductor Na 11 Sn 2 PSe 12 enables first sodium–selenium all-solid-state battery journal January 2019
LaLiO 2 -Based Multi-Functional Interlayer for Enhanced Performance of Li-S Batteries journal January 2019
Salt-Based Organic-Inorganic Nanocomposites: Towards A Stable Lithium Metal/Li 10 GeP 2 S 12 Solid Electrolyte Interface journal September 2018
Electrolytes and Electrolyte/Electrode Interfaces in Sodium‐Ion Batteries: From Scientific Research to Practical Application journal March 2019
A sodium-ion sulfide solid electrolyte with unprecedented conductivity at room temperature journal November 2019


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