Ionic conductivity in Li/sub 5/AlO/sub 4/ and LiOH
The ionic conductivity and thermal properties of Li/sub 5/AlO/sub 4/ and LiOH have been measured in wet and dry environments. Results show that an endothermic reaction at approximately 415/sup 0/C and an associated large increase in conductivity is observed both in Li/sub 5/AlO/sub 4/ in a wet environment and in LiOH. These features are not observed in Li/sub 5/AlO/sub 4/ prepared and examined in a dry environent. This suggests that the large conductivity increase in Li/sub 5/AlO/sub 4/ results from LiOH retained within the material. The reaction(s) for formation of LiOH within Li/sub 5/AlO/sub 4/ and the associated electrical changes appear to be reversible as the environment switches from wet to dry at high temperatures (approximately greater than 450/sup 0/C). There is a significant (greater than 1 percent) electronic contribution to the conductivity in these materials.
- Research Organization:
- Sandia Labs., Albuquerque, NM
- OSTI ID:
- 7212201
- Journal Information:
- Mater. Res. Bull.; (United States), Journal Name: Mater. Res. Bull.; (United States) Vol. 12:6; ISSN MRBUA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALI METAL COMPOUNDS
ALUMINATES
ALUMINIUM COMPOUNDS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
HIGH TEMPERATURE
HYDROGEN COMPOUNDS
HYDROXIDES
IONIC CONDUCTIVITY
LITHIUM COMPOUNDS
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES