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Title: Electrochemical cells with end-of-life indicator

Abstract

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.

Inventors:
;
Publication Date:
OSTI Identifier:
6971688
Patent Number(s):
US 4619874
Assignee:
Medtronic, Inc., Minneapolis, MN
Resource Type:
Patent
Resource Relation:
Patent File Date: Filed date 17 Aug 1984
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; ELECTROCHEMICAL CELLS; ADDITIVES; ANODES; CATHODES; ARSENIC BROMIDES; ARSENIC CHLORIDES; ARSENIC FLUORIDES; ELECTRIC CONDUCTIVITY; ELECTRIC DISCHARGES; ELECTRIC POTENTIAL; ELECTROLYTES; HALIDES; OXIDES; SERVICE LIFE; SOLUTES; SOLVENTS; SULFIDES; TRANSITION ELEMENT COMPOUNDS; VANADIUM COMPOUNDS; ARSENIC COMPOUNDS; BROMIDES; BROMINE COMPOUNDS; CHALCOGENIDES; CHLORIDES; CHLORINE COMPOUNDS; ELECTRICAL PROPERTIES; ELECTRODES; FLUORIDES; FLUORINE COMPOUNDS; HALOGEN COMPOUNDS; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; SULFUR COMPOUNDS; 250903* - Energy Storage- Batteries- Materials, Components, & Auxiliaries

Citation Formats

Skarstad, P M, and Hayes, T G. Electrochemical cells with end-of-life indicator. United States: N. p., 1986. Web.
Skarstad, P M, & Hayes, T G. Electrochemical cells with end-of-life indicator. United States.
Skarstad, P M, and Hayes, T G. Tue . "Electrochemical cells with end-of-life indicator". United States.
@article{osti_6971688,
title = {Electrochemical cells with end-of-life indicator},
author = {Skarstad, P M and Hayes, T G},
abstractNote = {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.},
doi = {},
url = {https://www.osti.gov/biblio/6971688}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1986},
month = {10}
}