Synthesis of New Solid Electrolytes.
Final rept. 1 Jul 78-31 Dec 81,
POLYTECHNIC INST OF BROOKLYN N Y
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The project originated in a search for new solid electrolytes by preparing compounds containing alkali metal cations distributed in sites which are connected in three-dimensional fashion, in the hope that such an arrangement would provide conditions conducive to improved ionic conductivity. Two approaches were used. The first, which was successful in that an extensive composition range was achieved for investigation, was to substitute variable concentrations of the mobile ions in a structure containing a large concentration of interstitial cavities. This was achieved in the cubic ZrP2O7 solid solutions where alkali ions were introduced into large interstitial sites while the excess positive charge was compensated by tripositive ions in the Zr4 sites. Conductivity and X-ray studies are reported herein for these phases. The second approach, the attempt to synthesize phases having the structure of the conducting region of a two-dimensional ionic conductor, beta-alumina, was unsuccessful in the system investigated, Na2O-Al2O3-TiO2. Some results are reported on conductivity of the sodium titanium bronze-like phase found in that ternary system. Author
- Inorganic Chemistry
- Physical Chemistry
- Nuclear Physics and Elementary Particle Physics