Effect of decomposition on the densification and properties of NASICON ceramic electrolytes

Technical Report · Mon Mar 01 04:00:00 EST 1982

DOI:https://doi.org/10.2172/5234213· OSTI ID:5234213

McEntire, B J; Bartlett, R A; Miller, G R; Gordon, R S

Processing and characterization of NASICON ceramic electrolytes have been conducted using a number of different techniques. Sintering of these materials was accomplished at temperatures between 1100/sup 0/C and 1375/sup 0/C. Results of this work have shown that NASICON ceramics with compositions around x=2 (i.e., Na/sub 3/Zr/sub 2/Si/sub 2/Po/sub 12/), are not monophase, possess poor mechanical strength and an anomalous thermal expansion behavior, and are subject to chemical instability in the presence of liquid sodium (at 300/sup 0/C). Using wet-chemical techniques, x-ray diffraction analysis, and SEM observations, it was found that NASICON apparently exhibits phase and chemical decomposition at densification temperatures. The products of this decomposition process can be correlated with the poor physical and corrosion-resistant properties.

• Research Organization: Lawrence Berkeley Lab., CA (USA)
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 5234213
• Report Number(s): LBL-14342; ON: DE82014876
• Country of Publication: United States
• Language: English

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ALKALI METAL COMPOUNDS
ALKALI METALS
ALUMINATES
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CERAMICS
CHALCOGENIDES
CHARGED PARTICLES
CHEMICAL REACTIONS
COHERENT SCATTERING
COMPATIBILITY
CORROSION RESISTANCE
CRYSTAL STRUCTURE
DECOMPOSITION
DIFFRACTION
ELECTRIC BATTERIES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTROCHEMICAL CELLS
ELECTROLYTES
ELECTRON MICROSCOPY
ELEMENTS
EXPANSION
FABRICATION
FLUIDS
GRAIN SIZE
IONIC CONDUCTIVITY
IONS
LIQUID METALS
LIQUIDS
MATERIALS
MATRIX MATERIALS
MECHANICAL PROPERTIES
MEMBRANES
METAL-NONMETAL BATTERIES
METALS
MICROSCOPY
MICROSTRUCTURE
OXIDES
OXYGEN COMPOUNDS
PHOSPHORUS COMPOUNDS
PHOSPHORUS OXIDES
PHYSICAL PROPERTIES
SAMPLE PREPARATION
SCANNING ELECTRON MICROSCOPY
SCATTERING
SILICON COMPOUNDS
SILICON OXIDES
SINTERING
SIZE
SODIUM
SODIUM COMPOUNDS
SODIUM IONS
SODIUM-SULFUR BATTERIES
SOLID ELECTROLYTES
THERMAL EXPANSION
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES