Chemically and compositionally modified solid solution disordered multiphase nickel hydroxide positive electrode for alkaline rechargeable electrochemical cells

Patent · Sat Jan 01 00:00:00 EST 1994

OSTI ID:869505

Ovshinsky, Stanford R ^[1]; Corrigan, Dennis ^[2]; Venkatesan, Srini ^[3]; Young, Rosa ^[2]; Fierro, Christian ^[2]; Fetcenko, Michael A ^[4]

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1. Bloomfield Hills, MI
2. Troy, MI
3. Southfield, MI
4. Rochester Hills, MI

A high capacity, long cycle life positive electrode for use in an alkaline rechargeable electrochemical cell comprising: a solid solution nickel hydroxide material having a multiphase structure that comprises at least one polycrystalline .gamma.-phase including a polycrystalline .gamma.-phase unit cell comprising spacedly disposed plates with at least one chemical modifier incorporated around the plates, the plates having a range of stable intersheet distances corresponding to a 2.sup.+ oxidation state and a 3.5.sup.+, or greater, oxidation state; and at least one compositional modifier incorporated into the solid solution nickel hydroxide material to promote the multiphase structure.

• Research Organization: Ovonic Battery Company, Inc. (Troy, MI)
• Assignee: Ovonic Battery Company, Inc. (Troy, MI)
• Patent Number(s): US 5348822
• OSTI ID: 869505
• Country of Publication: United States
• Language: English

Related Subjects

chemically
compositionally
modified
solid
solution
disordered
multiphase
nickel
hydroxide
positive
electrode
alkaline
rechargeable
electrochemical
cells
capacity
cycle
life
cell
comprising
material
structure
comprises
polycrystalline
gamma
-phase
including
unit
spacedly
disposed
plates
chemical
modifier
incorporated
range
stable
intersheet
distances
corresponding
oxidation
compositional
promote
cycle life
positive electrode
electrochemical cells
electrochemical cell
cell comprising
solid solution
oxide material
phase including
unit cell
rechargeable electrochemical
nickel hydroxide
phase structure
alkaline rechargeable
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