Tungsten oxide-containing cathode for non-aqueous galvanic cell

Claim 2

A COLORIMETRIC INDICATOR SUITABLE FOR THE RAPID SEMIQUAN

Claim 3

IN A HIGH ENERGY DENSITY PRIMARY GALVANIC CELL HAVING A CATHODE CONTAINING CATHODICALLY ACTIVE MATERIAL, A LIGHT METAL TITATIVE DETECTION OF UREA IN SOLUTION, SAID INDICTOR COMPRISING: ANODE FROM GROUP IA OR IIA OF THE PERIODIC TABLE, AND A A. A REACTION ZONE CONTAINING AN ABSORBENT CARRIER IMAREGNONAQUEOUS ORGANIC LIQUID ELECTROLYTE, THE IMPROVEMENT IN NATED WITH AN ENZYME CAPABLE OF HYDROLYZING UREA INTO COMBINATION THEREWITH WHICH COMPRISES, A CATHODE WHEREIN THE CATHODICALLY ACTIVE MATERIAL COMAMMONIA AND CARBON DIOXIDE AND AT LEAST ONE ALKALI METAL CARBONATE OR ALKALI METAL HYDROXIDE IN AN AMOUNT SUFFIPRISES WOX, WHEREIN X IS BETWEEN ABOUT 2.0 TO 2.9. CIENT TO PROVIDE A PH OF 8-10 WHEN SAID REACTION ZONE IS MOISTENED WITH WATER AND RO RAISE THE VAPOR PRESSURE OF AMMONIA RELASED BY ENZYMATIC HYDROLYSIS OF UREA, AND B. A PH INDICATOR ZONE SEPARATE FROM THE REACTION ZONE CONTAINING AN ABSORBENT CARRIER IMPREGNATED WITH A COLORIMETRIC INDICATOR RESPONSIVE TO AMMONIA LIBERATED BY SAID REACTION ZONE.

Claim 4

IN A HIGH ENERGY DENSITY PRIMARY GALVANIC CELL HAVING A CATHODE CONTAINING CATHODICALLY ACTIVE MATERIAL, A LIGHT METAL TITATIVE DETECTION OF UREA IN SOLUTION, SAID INDICTOR COMPRISING: ANODE FROM GROUP IA OR IIA OF THE PERIODIC TABLE, AND A A. A REACTION ZONE CONTAINING AN ABSORBENT CARRIER IMAREGNONAQUEOUS ORGANIC LIQUID ELECTROLYTE, THE IMPROVEMENT IN NATED WITH AN ENZYME CAPABLE OF HYDROLYZING UREA INTO COMBINATION THEREWITH WHICH COMPRISES, A CATHODE WHEREIN THE CATHODICALLY ACTIVE MATERIAL COMAMMONIA AND CARBON DIOXIDE AND AT LEAST ONE ALKALI METAL CARBONATE OR ALKALI METAL HYDROXIDE IN AN AMOUNT SUFFIPRISES WOX, WHEREIN X IS BETWEEN ABOUT 2.0 TO 2.9. CIENT TO PROVIDE A PH OF 8-10 WHEN SAID REACTION ZONE IS MOISTENED WITH WATER AND RO RAISE THE VAPOR PRESSURE OF AMMONIA RELASED BY ENZYMATIC HYDROLYSIS OF UREA, AND B. A PH INDICATOR ZONE SEPARATE FROM THE REACTION ZONE CONTAINING AN ABSORBENT CARRIER IMPREGNATED WITH A COLORIMETRIC INDICATOR RESPONSIVE TO AMMONIA LIBERATED BY SAID REACTION ZONE.

Claim 5

A cell according to claim 1 wherein x is about 2.7.

Claim 6

A cell according to claim 1 wherein the cathodically active material comprises more than about 10% of WOx, wherein x is between about 2.0 to 2.9.

Claim 7

A cell according to claim 3 wherein the cathodically active material comprises from about 50% to 100% of WOx, wherein x is between about 2.0 to 2.9.

Claim 8

A cell according to claim 1 wherein the cathode contains, additionally, up to about 5% of a conductivity aid, based on the weight of the active material.

Claim 9

A cell according to claim 1 wherein the cathode contains, additionally, up to about 15% of a binder, based on the weight of the active material.

Claim 10

A cell according to claim 2 wherein the cathodically active material comprises more than about 10% of WOx, wherein x is about 2.7.

Claim 11

A cell according to claim 7 wherein the cathodically active material comprises from about 50% to 100% of WOx, wherein x is about 2.7.

Claim 12

A cell according to claim 2 wherein the cathode contains, additionally, up to about 5% of a conductivity aid, based on the weight of the active material.

Claim 13

A cell according to claim 2 wherein the cathode contains up to about 15% of a binder, based on the weight of the active material.