Ni-Co alloy plaque for cathode of Ni-Cd battery

Patent · Thu Mar 27 04:00:00 EST 1986

OSTI ID:5356065

Lander, J J

This invention relates generally to Ni-Cd batteries and, in particular, relates to the plaque material attached to the cathode. Because of the wide use of nickel-cadmium batteries, the corrosion rates of nickel and nickel-cobalt alloys are of interest to nickel-cadmium battery electrochemical theory and its technology. The plaque material of the cathode consists of a Ni-Co alloy in solid solution wherein the cobalt is by weight percent 1-10% of the alloy. Conventional methods of applying the plaque material to the nickel core may be used. It is therefore an object of the invention to provide an improved cathode for a nickel-cadmium battery wherein the nickel corrosion is substantially lessened in the plaque material. One process of making the plaque uses a nickel-powder slurry applied to a nickel-plated steel core. This is then sintered at a high temperature which, results in a very porous structure and welding of the nickel grains to the core. This plaque is then soaked in appropriate salts to make either a positive or a negative plate; nickel salts make a positive plate and a cadmium salts a negative plate, for example. After impregnation, the plaque is placed in an electrolyte and an electric current is passed therethrough to convert the salts to their final form. In the nickel-cadmium cell, nickel hydroxide is the active material in the positive plate.

• Assignee: Dept. of the Air Force, Washington, DC
• Patent Number(s): None
• OSTI ID: 5356065
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
250903* -- Energy Storage-- Batteries-- Materials
Components
& Auxiliaries
36 MATERIALS SCIENCE
360105 -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
CATHODES
CHEMICAL REACTIONS
CHEMISTRY
COBALT ALLOYS
CORROSION
DEPOSITION
DISPERSIONS
ELECTRIC BATTERIES
ELECTROCHEMICAL CELLS
ELECTROCHEMISTRY
ELECTRODES
ELECTROLYTES
FABRICATION
HIGH TEMPERATURE
HYDROGEN COMPOUNDS
HYDROXIDES
IMPREGNATION
JOINING
MATERIALS
METAL-METAL OXIDE BATTERIES
MIXTURES
NICKEL ALLOYS
NICKEL-CADMIUM BATTERIES
OXYGEN COMPOUNDS
PLATING
POROSITY
POWDERS
SALTS
SLURRIES
SOLID SOLUTIONS
SOLUTIONS
SURFACE COATING
SUSPENSIONS
WELDING