Enhanced nickel hydroxide positive electrode materials for alkaline rechargeable electrochemical cells

Enhanced nickel hydroxide positive electrode materials for alkaline rechargeable electrochemical cells

A positive electrode material for use in electrochemical cells. This material comprises particles of positive electrode material including at least one electrochemically active hydroxide and a substantially continuous, uniform, encapsulant layer surrounding the particles of positive electrode materi...

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Hauptverfasser: MICHAEL A. FETCENKO, PETER BENSON, DENNIS A CORRIGAN, CRISTIAN FIERRO, FRANKLIN J MARTIN, PAUL R GIFFORD, STANFORD R. OVSHINSKY
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Sprache:eng
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BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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creator MICHAEL A. FETCENKO
PETER BENSON
DENNIS A CORRIGAN
CRISTIAN FIERRO
FRANKLIN J MARTIN
PAUL R GIFFORD
STANFORD R. OVSHINSKY
description A positive electrode material for use in electrochemical cells. This material comprises particles of positive electrode material including at least one electrochemically active hydroxide and a substantially continuous, uniform, encapsulant layer surrounding the particles of positive electrode material. The encapsulant layer is formed from a material which, upon oxidation during processing or during charging of the electrode, is convertible to a highly conductive form, and which, upon subsequent discharge of the electrode, does not revert to its previous form. Preferably, the electrochemically active hydroxide includes at least nickel hydroxide. The encapsulant layer is preferably formed from at least cobalt hydroxide or cobalt oxyhydroxide. This layer is formed on the particles of positive electrode material by precipitation from a cobalt salt solution, which can be a cobalt sulfate solution. Also disclosed are positive electrodes including the material and a precipitation method of forming the material.
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This layer is formed on the particles of positive electrode material by precipitation from a cobalt salt solution, which can be a cobalt sulfate solution. 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FETCENKO</creatorcontrib><creatorcontrib>PETER BENSON</creatorcontrib><creatorcontrib>DENNIS A CORRIGAN</creatorcontrib><creatorcontrib>CRISTIAN FIERRO</creatorcontrib><creatorcontrib>FRANKLIN J MARTIN</creatorcontrib><creatorcontrib>PAUL R GIFFORD</creatorcontrib><creatorcontrib>STANFORD R. OVSHINSKY</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>MICHAEL A. FETCENKO</au><au>PETER BENSON</au><au>DENNIS A CORRIGAN</au><au>CRISTIAN FIERRO</au><au>FRANKLIN J MARTIN</au><au>PAUL R GIFFORD</au><au>STANFORD R. OVSHINSKY</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Enhanced nickel hydroxide positive electrode materials for alkaline rechargeable electrochemical cells</title><date>1996-05-31</date><risdate>1996</risdate><abstract>A positive electrode material for use in electrochemical cells. This material comprises particles of positive electrode material including at least one electrochemically active hydroxide and a substantially continuous, uniform, encapsulant layer surrounding the particles of positive electrode material. The encapsulant layer is formed from a material which, upon oxidation during processing or during charging of the electrode, is convertible to a highly conductive form, and which, upon subsequent discharge of the electrode, does not revert to its previous form. Preferably, the electrochemically active hydroxide includes at least nickel hydroxide. The encapsulant layer is preferably formed from at least cobalt hydroxide or cobalt oxyhydroxide. This layer is formed on the particles of positive electrode material by precipitation from a cobalt salt solution, which can be a cobalt sulfate solution. Also disclosed are positive electrodes including the material and a precipitation method of forming the material.</abstract><edition>6</edition><oa>free_for_read</oa></addata></record>
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subjects BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
title Enhanced nickel hydroxide positive electrode materials for alkaline rechargeable electrochemical cells
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