Fast ion motion in selected vitreous and crystalline solid electrolytes. Final technical report, April 1, 1984-March 31, 1985

Technical Report · Fri Nov 01 00:00:00 EST 1985

OSTI ID:5820128

Whitmore, D H

As an extension of prior work done in this laboratory on proton transport in NH/sub 4//sup +/-H/sub 3/O/sup +/..beta..''-alumina, we report here new proton diffusion coefficient and conductivity measurements on: (1) magnesia-stabilized NH/sub 4//sup +/-H/sub 3/O/sup +/ ..beta..''-alumina crystals with a substantially different stoichiometry than that reported earlier; and (2) NH/sub 4//sup +/-H/sub 3/O/sup +/ ..beta..''-gallate crystals where stabilization of the as-grown crystal involves sodium substitution in the spinel block. Proton diffusion coefficients of both compounds were measured over the temperature range 300 to 450K with the aid of a pulsed field gradient NMR technique, whereas a complex admittance method was used to obtain the protonic conductivities reported here for the same temperature interval. In the light of the present and earlier observations of protonic transport behavior, ideas were discussed concerning: (1) possible mechanisms of proton transport and (2) the role played by stoichiometry and the type of spinel-block stabilizing element in these ..beta..'' materials.

• Research Organization: Northwestern Univ., Evanston, IL (USA). Dept. of Materials Science and Engineering
• DOE Contract Number: FG02-84ER45052
• OSTI ID: 5820128
• Report Number(s): DOE/ER/45052-1; ON: DE86010280
• Resource Relation: Other Information: Portions of this document are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINATES
DIFFUSION
IONIC CONDUCTIVITY
BETA-W LATTICES
GALLIUM COMPOUNDS
SOLID ELECTROLYTES
MONOCRYSTALS
NUCLEAR MAGNETIC RESONANCE
PROTONS
ALUMINIUM COMPOUNDS
BARYONS
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CRYSTALS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTROLYTES
ELEMENTARY PARTICLES
FERMIONS
HADRONS
MAGNETIC RESONANCE
NUCLEONS
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RESONANCE
360603* - Materials- Properties