Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7744429 | Solid State Ionics | 2018 | 6 Pages |
Abstract
Li4GeS4-substituted Li3PS4 crystals have high Li+ ion conductivities comparable to that of commercial organic electrolytes [Kamaya et al., Nat. Mater. 10 (2011) 682]. In this study, (100â¯ââ¯x)Na3PS4·xNa4GeS4 glasses and glass-ceramics were prepared for novel Na+ ion conductors. These glasses, which have the highest Na content reported to date in the Na-P-Ge-S system, were prepared by a mechanical milling technique. These glasses are composed of PS43â and GeS44â. The crystallization temperatures gradually increased with increasing Na4GeS4 content. The glasses showed higher conductivities of ~10â5â¯Sâ¯cmâ1 than the Na-P-Ge-S glasses reported so far. The glass-ceramics with the compositions xâ¯=â¯50 and 75, where the crystal predicted by first principles calculations to have high conductivities exceeding 10â3â¯Sâ¯cmâ1 was precipitated, exhibited Na+ ion conductivities of ~10â5â¯Sâ¯cmâ1 at room temperature.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Naoto Tanibata, Kousuke Noi, Akitoshi Hayashi, Masahiro Tatsumisago,