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Novel Mg-ion conductive oxide of μ-cordierite Mg0.6Al1.2Si1.8O6.
Novel Mg-ion conductive oxide of μ-cordierite Mg0.6Al1.2Si1.8O6.
- Source :
-
Science & Technology of Advanced Materials . Dec2020, Vol. 21 Issue 1, p131-138. 8p. - Publication Year :
- 2020
-
Abstract
- Solid electrolytes with high Mg-ion conductivity are required to develop solid-state Mg-ion batteries. The migration energies of the Mg2+ ions of 5,576 Mg compounds tabulated from the inorganic crystal structure database (ICSD) were evaluated via high-throughput calculations. Among the computational results, we focused on the Mg2+ ion diffusion in Mg0.6Al1.2 Si1.8O6, as this material showed a relatively low migration energy for Mg2+ and was composed solely of ubiquitous elements. Furthermore, first-principles molecular dynamics calculations confirmed a single-phase Mg2+ ion conductor. The bulk material with a single Mg0.6Al1.2Si1.8O6 phase was successfully prepared using the sol-gel method. The relative density of the sample was 81%. AC impedance measurements indicated an electrical conductivity of 1.6 × 10−6 Scm−1 at 500°C. The activation energy was 1.32 eV, which is comparable to that of monoclinic-type Mg0.5Zr2(PO4)3. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14686996
- Volume :
- 21
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Science & Technology of Advanced Materials
- Publication Type :
- Academic Journal
- Accession number :
- 148654114
- Full Text :
- https://doi.org/10.1080/14686996.2020.1730237