4.7 Article

A highly stable sodium solid-state electrolyte based on a dodeca/deca-borate equimolar mixture

Journal

CHEMICAL COMMUNICATIONS
Volume 53, Issue 30, Pages 4195-4198

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c7cc00794a

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Funding

  1. Swiss National Science Foundation within Sinergia project 'Novel ionic conductors' [CRSII2_160749/1]
  2. Swiss National Science Foundation (SNFS) [206021_150638/1]

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Na-2(B12H12) (0.5)(B10H10) (0.5), a new solid-state sodium electrolyte is shown to offer high Na+ conductivity of 0.9 mS cm(-1) at 20 degrees C, excellent thermal stability up to 300 degrees C, and a large electrochemical stability window of 3 V including stability towards sodium metal anodes, all essential prerequisites for a stable room-temperature 3 V all-solid-state sodium-ion battery.

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