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SOLID ELECTROLYTE MATERIAL INCORPORATING BETA-ALUMINA CERAMIC, ITS MANUFACTURE AND SODIUM-SULPHUR CELLS AND OTHER ENERGY CONVERSION DEVICES UTILISING SUCH MATERIAL
SOLID ELECTROLYTE MATERIAL INCORPORATING BETA-ALUMINA CERAMIC, ITS MANUFACTURE AND SODIUM-SULPHUR CELLS AND OTHER ENERGY CONVERSION DEVICES UTILISING SUCH MATERIAL
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机译:包含β-铝陶瓷的固态电解质材料,其制造和硫化钠电池以及其他利用这种材料制成的能量转换装置
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摘要
Beta-alumina electrolyte material for use in a sodium sulphur cell is protected, on the side exposed to sodium, by a thin coating of an ionically conductive material which will conduct sodium ions. The coating may be for example a glass such as a sodium oxide silica glass or a sodium oxide phosphoric oxide glass. Other glass compositions are described in the specification. As another example the material may be formed by calcining a sodium-doped sol or sol-gel applied to the surface, for example a sodium-doped alumina sol. Another technique comprises applying a solution or dispersion of a suitable sodium compound such as sodium tetraborate or sodium silicate or sodium phosphate, to the surface and firing after evaporating the solvent.
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