Szczegóły publikacji
Opis bibliograficzny
Characterization of Sr-doped lithium lanthanum titanate with improved transport properties / Saisai Zhang, Hailei Zhao, Jingrong Guo, Zhihong Du, Jie Wang, Konrad ŚWIERCZEK // Solid State Ionics ; ISSN 0167-2738. — 2019 — vol. 336, s. 39–46. — Bibliogr. s. 45–46, Abstr. — Publikacja dostępna online od: 2019-03-22. — K. Świerczek - dod. afiliacja: AGH Centre of Energy
Autorzy (6)
- Zhang Saisai
- Zhao Hailei
- Guo Jingrong
- Du Zhihong
- Wang Jie
- AGHŚwierczek Konrad
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 121193 |
|---|---|
| Data dodania do BaDAP | 2019-06-12 |
| Tekst źródłowy | URL |
| DOI | 10.1016/j.ssi.2019.03.015 |
| Rok publikacji | 2019 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Solid State Ionics |
Abstract
Safety issues affecting traditional lithium-ion batteries with liquid electrolyte can be successfully overcome by application of a solid electrolyte. Among various candidate materials, perovskite-type compounds, typically from Li 3x La 2/3−x TiO 3 group, are known to exhibit superior Li + ionic conductivity. However, the ever-increasing requirement for high ionic conductivity necessitates the improvement of its structure and composition. In this work, Sr 2+ cations, having ionic radius larger than La 3+ , are doped at the La-site in order to enlarge the unit lattice parameter and so facilitate the lithium ion migration process. At the same time, Sr doping can increase the lithium ion concentration of Li 0.33+x La 0.56−x Sr x TiO 3 oxides as charge compensation. Both of them favor the increase of lithium ion conductivity. The Sr substitution induces structure transformation from tetragonal to cubic structure. The prepared dense Li 0.36 La 0.53 Sr 0.03 TiO 3 (x = 0.03) ceramic electrolyte exhibits a high ionic conductivity of 1.95 × 10 −3 S cm −1 at 303 K, which is about twice as high as that of the pristine material. © 2019 Elsevier B.V.
