Ceramic-metal solid electrolytes
The sodium-sulfur battery is a candidate for application to electric vehicles and utility load-leveling. The electrolyte in this battery, ..beta..-Al/sub 2/O/sub 3/, often fails by fracture, which in many cases is initiated by electrolytic degradation. Technology developed at ORNL to produce shock-resistant mechanically tough ..cap alpha..-Al/sub 2/O/sub 3/-based cermets has been extended to include solid electrolytes based on ..beta..-Al/sub 2/O/sub 3/. Compositions examined, ..beta..-Al/sub 2/O/sub 3/-Pt and ..beta..-Al/sub 2/O/sub 3/-Cr, were found to have ionic conductivities comparable to ..beta..-Al/sub 2/O/sub 3/ fabricated in the same way. No special problems with the submicron-size metal inclusions were observed in preliminary tests. This concept is generic and could conceivably be applied to ceramic solid electrolytes in other chemical systems.
- Research Organization:
- Oak Ridge National Lab., TN (USA)
- DOE Contract Number:
- W-7405-ENG-26
- OSTI ID:
- 5227557
- Report Number(s):
- ORNL/TM-8154; ON: DE82009034
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360303* -- Composite Materials-- Mechanical Properties-- (-1987)
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CHALCOGENIDES
CHROMIUM COMPOUNDS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTROLYTES
FRACTURE PROPERTIES
MECHANICAL PROPERTIES
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PLATINUM COMPOUNDS
SOLID ELECTROLYTES
TRANSITION ELEMENT COMPOUNDS