Nickel gradient electrode

Patent · Thu Mar 31 04:00:00 EST 1988

OSTI ID:6827229

Zimmerman, A H

This invention relates generally to rechargeable batteries, and, in particular, relates to batteries that use nickel electrodes. It provides an improved nickel electrode with a selected gradient of additive materials. The concentration of additives in the impregnating solution are controlled during impregnation such that an additive gradient is generated. In the situation where the highest ionic conductivity is needed at the current collector boundary with the active material, the electrochemical impregnating solution is initially high in additive, and at the end of impregnation has been adjusted to significantly lower additive concentration. For chemical impregnation, the electrodes are similarly dipped in solutions that are initially high in additive. This invention is suitable for conventional additives such as cobalt, cadmium, barium, manganese, and zinc. It is therefore one objective of the invention to provide an improved nickel electrode of a battery cell with an additive in the active material to increase the life of the battery cell. Another objective is to provide for an improved nickel electrode having a greater concentration of additive near the current collector of nickel.

• Research Organization: Department of the Air Force, Washington, DC (USA)
• Assignee: Department of the Air Force, Washington, DC
• Patent Number(s): None
• OSTI ID: 6827229
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
250903* -- Energy Storage-- Batteries-- Materials
Components
& Auxiliaries
ADDITIVES
ALKALINE EARTH METALS
BARIUM
CADMIUM
CHEMISTRY
COBALT
CONTROL
ELECTRIC BATTERIES
ELECTROCHEMICAL CELLS
ELECTROCHEMISTRY
ELECTRODES
ELEMENTS
IMPREGNATION
INVENTIONS
MANGANESE
MATERIALS
METALS
NICKEL
TRANSITION ELEMENTS
ZINC