Solid-state ionics: a new high ionic conductivity solid electrolyte Ag/sub 6/I/sub 4/WO/sub 4/ and use of this compound in a solid-electrolyte cell

Journal Article · Tue May 01 00:00:00 EDT 1973 · J. Electrochem. Soc.; (United States)

DOI:https://doi.org/10.1149/1.2403524· OSTI ID:6832865

Takahashi, T; Ikeda, S; Yamamoto, O

A new high ionic conductivity solid Ag/sub 6/I/sub 4/WO/sub 4/ has been found in the system AgI-Ag/sub 2/WO/sub 4/ at ambient temperature. This compound has a silver ion conductivity of 0.047 (ohm.cm)/sup -1/ at 25/sup 0/C and an activation energy for conduction of 3.6 KCaL/mole between 20/sup 0/ and 293/sup 0/C. The transport number measurement using Tubandt's method shows that the transport number of silver ions in this compound is 1.00 within the experiment error. An Ag/Ag/sub 6/I/sub 4/WO/sub 4//I/sub 2/ solid-electrolyte cell shows an open-circuit voltage of 637 MV which agrees well with the value of 686.7 MV calculated from deltag degrees of the cell reaction at 21/sup 0/C. Characteristics of the solid-state cells using Ag/sup 6/I/sub 4/WO/sub 4/ as the electrolyte have been investigated. The phase diagram of the system AgI-Ag/sub 2/WO/sub 4/ has been determined also. 14 references.

• Research Organization: Nagoya Univ., Japan
• OSTI ID: 6832865
• Journal Information: J. Electrochem. Soc.; (United States), Journal Name: J. Electrochem. Soc.; (United States) Vol. 120:5; ISSN JESOA
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
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Components
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ELECTRIC BATTERIES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTROCHEMICAL CELLS
ELECTROLYTES
HALIDES
HALOGEN COMPOUNDS
IODIDES
IODINE COMPOUNDS
IONIC CONDUCTIVITY
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SILVER COMPOUNDS
SILVER IODIDES
SILVER TUNGSTATES
SOLID ELECTROLYTES
TRANSITION ELEMENT COMPOUNDS
TUNGSTATES