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Title: Nickel gradient electrode

Abstract

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.

Inventors:
Publication Date:
Research Org.:
Department of the Air Force, Washington, DC (USA)
OSTI Identifier:
6827229
Assignee:
Department of the Air Force, Washington, DC GRA; GRA-88-00807; EDB-89-020251
Resource Type:
Patent
Resource Relation:
Other Information: This Government-owned invention available for U.S. licensing and, possibly, for foreign licensing. Copy of application available NTIS
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; ELECTRIC BATTERIES; ELECTRODES; NICKEL; ADDITIVES; BARIUM; CADMIUM; COBALT; CONTROL; ELECTROCHEMISTRY; IMPREGNATION; INVENTIONS; MANGANESE; MATERIALS; ZINC; ALKALINE EARTH METALS; CHEMISTRY; ELECTROCHEMICAL CELLS; ELEMENTS; METALS; TRANSITION ELEMENTS 250903* -- Energy Storage-- Batteries-- Materials, Components, & Auxiliaries

Citation Formats

Zimmerman, A.H. Nickel gradient electrode. United States: N. p., 1988. Web.
Zimmerman, A.H. Nickel gradient electrode. United States.
Zimmerman, A.H. 1988. "Nickel gradient electrode". United States. doi:.
@article{osti_6827229,
title = {Nickel gradient electrode},
author = {Zimmerman, A.H.},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 1988,
month = 3
}