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

Patent · Sat Jan 01 04:00:00 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

-phase
/429/252/419/428/
alkaline
alkaline rechargeable
capacity
cell
cell comprising
cells
chemical
chemically
compositional
compositionally
comprises
comprising
corresponding
cycle
cycle life
disordered
disposed
distances
electrochemical
electrochemical cell
electrochemical cells
electrode
gamma
hydroxide
including
incorporated
intersheet
life
material
modified
modifier
multiphase
nickel
nickel hydroxide
oxidation
oxide material
phase including
phase structure
plates
polycrystalline
positive
positive electrode
promote
range
rechargeable
rechargeable electrochemical
solid
solid solution
solution
spacedly
stable
structure
unit
unit cell