Exceptional superionic conductivity in disordered sodium decahydro-closo-decaborate.
basic_science · Level V
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- Record sourced from PubMed, PMID 25312377.
- Also identified by DOI 10.1002/adma.201403157.
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Abstract
Na2 B10 H10 exhibits exceptional superionic conductivity above ca. 360 K (e.g., ca. 0.01 S cm(-1) at 383 K) concomitant with its transition from an ordered monoclinic structure to a face-centered-cubic arrangement of orientationally disordered B10 H10 (2-) anions harboring a vacancy-rich Na(+) cation sublattice. This discovery represents a major advancement for solid-state Na(+) fast-ion conduction at technologically relevant device temperatures.