Isothermal evolution of phase composition, structural parameters, and ionic conductivity in Na1+Al Ge2-(PO4)3 glass-ceramics
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Abstract
Abstract Precursor glasses with composition Na1+xAlxGe2-x(PO4)3 (NAGP) (0.6 ≤ x ≤ 1.0) are converted into Na-superionic conductor (NASICON) glass-ceramics by thermal treatments with varied duration and annealing temperature. Detailed X-ray powder diffraction with Rietveld refinement and 31P and 27Al solid-state nuclear magnetic resonance (NMR) spectroscopy show that extended annealing at the crystallization temperature leads to a progressive de-alumination, segregation of T-AlPO4 and other crystalline phases, accompanied by the formation of amorphous material. These results suggest that an earlier formed aluminum super-saturated structure equilibrates by losing aluminum upon extended annealing. However, the ionic conductivity of glass-ceramics is less affected than would be predicted by the Al loss encountered in the NASICON phase, suggesting that ionic conductivity in these samples is not only controlled by the composition of the NASICON phase but is further influenced by the other phases present, either by contributing directly to ion transport or by facilitating interparticle contacts.
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Research context
OpenAlex topics: Advanced Battery Materials and Technologies · Glass properties and applications · Microwave Dielectric Ceramics Synthesis
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References (26)
Show source-provided references
1. Sodium-ion batteries10.1002/adfm.201200691 ↗
2. High temperature sodium batteries: Status, challenges and future trends10.1039/c3ee24086j ↗
3. The emerging chemistry of sodium ion batteries for electrochemical energy storage10.1002/anie.201410376 ↗
4. Fabrication and performances of all solid-state symmetric sodium battery based on NASICON-related compounds10.1016/j.electacta.2012.11.038 ↗
5. An all-solid state NASICON sodium battery operating at 200°C10.1016/j.jpowsour.2013.09.051 ↗
6. Novel sodium superionic conductor of the Na1+yTi2Siy P3-yO12 series for application as solid electrolyte10.1016/j.electacta.2019.07.032 ↗
7. A wide-ranging review on Nasicon type materials10.1007/s10853-011-5302-5 ↗
8. Survey of the transport properties of sodium superionic conductor materials for use in sodium batteries10.1016/j.jpowsour.2014.09.137 ↗
9. Structure determination, electronic and optical properties of NaGe2P3O12 and Cs2GeP4O1310.1016/j.molstruc.2009.01.009 ↗
10. H. Eckert, A. Candida, M. Rodrigues, Ion-conducting glass-ceramics for energy-storage applications, (2019) 206–212, doi:10.1557/mrs.2017.30.10.1557/mrs.2017.30 ↗
11. Synthesis and characterisation of Cr3+-containing NASICON-related phases10.1016/j.ssi.2006.08.019 ↗
12. Crystal chemistry and ion conductivity of the Na1+xTi2-xAlx(PO4)3 (0 ≤ x ≤ 0.9) NASICON series10.1039/b004837m ↗
13. Nominal vs. actual stoichiometries in Al-doped NASICONs: A study of the Na1.4Al0.4M1.6(PO4)3 (M = Ge, Sn, Ti, Hf, Zr) family10.1016/j.ssi.2005.04.009 ↗
14. Fast Li+ ion conducting glass-ceramics in the system Li2O–Al2O3–GeO2–P2O510.1016/S0167-2738(97)00434-7 ↗
15. Microstructure and ionic conductivity of Li1+xAlxTi2-x(PO4)3 NASICON glass-ceramics10.1016/j.ssi.2010.05.010 ↗
16. Precursor glass stability, microstructure and ionic conductivity of glass-ceramics from the Na1+xAlxGe2–x(PO4)3 NASICON series10.1016/j.jnoncrysol.2019.03.008 ↗
17. Controlled crystallization and ionic conductivity of a nanostructured LiAlGePO4 glass–ceramic10.1016/j.jnoncrysol.2009.07.012 ↗
18. Structural evolution of NASICON-type Li1+xAlxGe2−x(PO4)3 using in situ synchrotron X-ray powder diffraction10.1039/C6TA00402D ↗
19. Glass-to-crystal transition in the NASICON glass-ceramic system Na1+xAlxM2−x(PO4)3 (M = Ge, Ti)10.1016/j.jnoncrysol.2017.10.057 ↗
20. Crystallographica Search-Match10.1107/S0021889899004124 ↗
21. The TOPAS symbolic computation system10.1154/1.3661087 ↗
22. New developments in the Inorganic crystal structure database (ICSD): accessibility in support of materials research and design10.1107/S0108768102006948 ↗
23. Modelling one- and two-dimensional solid-state NMR spectra10.1002/mrc.984 ↗
24. MAS NMR spectra of quadrupolar nuclei in disordered solids: The Czjzek model, J10.1016/j.jmr.2008.03.001 ↗
25. Na+ ion conductors of glass–ceramics in the system Na1+xAlxGe2−xP3O12(0.3≤x≤1.0)10.1016/j.jallcom.2008.12.106 ↗
26. (Received November 5, 1984 ; Communicated by P. Hagenmuller)