Electrochemical cells with end-of-life indicator

Patent · Tue Oct 28 04:00:00 EST 1986

OSTI ID:6971688

Skarstad, P M; Hayes, T G

This patent describes an electrochemical cell including an oxidizable active anode material; a non-consumable, electrically conducting, inert cathode current collector material, and electrolytic solution bridging the anode and cathode current collector. The solution includes a liquid, inorganic oxyhalide or thiohalide solvent and a solute for rendering the electrolytic solution conductive of anode metal ions. The improvement described here comprisses the addition to the cell of a quantity of an EOL component, as an initial dischargeable constituent thereof, having an electropotential lower than that of the solvent. The EOL component is selected from the group consisting of arsenic trichloride, arsenic trifluoride, arsenic tribromide, the vanadium halides, the transition metal sulfides and oxides, except for the actinide series, and technetium, and mixtures thereof whereby EOL indication in the form of a step discharge is provided during discharge of the cell.

• Assignee: Medtronic, Inc., Minneapolis, MN
• Patent Number(s): US 4619874
• OSTI ID: 6971688
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
250903* -- Energy Storage-- Batteries-- Materials
Components
& Auxiliaries
ADDITIVES
ANODES
ARSENIC BROMIDES
ARSENIC CHLORIDES
ARSENIC COMPOUNDS
ARSENIC FLUORIDES
BROMIDES
BROMINE COMPOUNDS
CATHODES
CHALCOGENIDES
CHLORIDES
CHLORINE COMPOUNDS
ELECTRIC CONDUCTIVITY
ELECTRIC DISCHARGES
ELECTRIC POTENTIAL
ELECTRICAL PROPERTIES
ELECTROCHEMICAL CELLS
ELECTRODES
ELECTROLYTES
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SERVICE LIFE
SOLUTES
SOLVENTS
SULFIDES
SULFUR COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
VANADIUM COMPOUNDS