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Low-temperature synthesis of apatite-type La 9.33 Ge 6 O 26 as electrolytes with high conductivity
- Source :
- Chinese Physics B. 27:048201
- Publication Year :
- 2018
- Publisher :
- IOP Publishing, 2018.
-
Abstract
- In the present study, high-quality apatite-type La9.33Ge6O26 powders are successfully synthesized by a facile molten-salt synthesis method (MSSM) at low temperatures, using LiCl, LiCl/NaCl mixture (mass ratio 1:1) as molten salt, respectively. Experimental results indicate that the optimal mass ratio between reactant and molten salt is 1:2, and LiCl/NaCl mixed molten-salt is more beneficial for forming high-quality La9.33Ge6O26 powders than LiCl individual molten-salt. Comparing with the conventional solid-state reaction method (SSRM), the synthesis temperature of apatite-type La9.33Ge6O26 powders using the MSSM decreases more than 350 °C, which can effectively avoid Ge loss in the preparation process of precursor powders. Furthermore, the powders obtained by the MSSM are homogeneous, non-agglomerated and well crystallized, which are very favorable for gaining dense pellets in the premise of avoiding Ge loss. On the basis of high-quality precursor powders, the dense and pure ceramic pellets of La9.33Ge6O26 are gained at a low temperature of 1100 °C for 2 h, which exhibit higher conductivities (, and lower activation energies (, ) than that synthesized by the SSRM.
- Subjects :
- Materials science
High conductivity
Pellets
General Physics and Astronomy
02 engineering and technology
Electrolyte
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
Apatite
0104 chemical sciences
Chemical engineering
Homogeneous
visual_art
visual_art.visual_art_medium
Ceramic
Molten salt
0210 nano-technology
Subjects
Details
- ISSN :
- 16741056
- Volume :
- 27
- Database :
- OpenAIRE
- Journal :
- Chinese Physics B
- Accession number :
- edsair.doi...........04d522a2f6dde71a83f89d9de67ee87c