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

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.
Authors:
 [1] ;  [2] ;  [3] ;  [2] ;  [2] ;  [4]
  1. (Bloomfield Hills, MI)
  2. (Troy, MI)
  3. (Southfield, MI)
  4. (Rochester Hills, MI)
Publication Date:
OSTI Identifier:
869505
Report Number(s):
US 5348822
Resource Type:
Patent
Research Org:
Ovonic Battery Company, Inc. (Troy, MI)
Country of Publication:
United States
Language:
English
Subject:
chemically; compositionally; modified; solid; solution; disordered; multiphase; nickel; hydroxide; positive; electrode; alkaline; rechargeable; electrochemical; cells; capacity; cycle; life; positive; electrode; alkaline; rechargeable; electrochemical; cell; comprising; solid; solution; nickel; hydroxide; material; multiphase; structure; comprises; polycrystalline; gamma; -phase; including; polycrystalline; gamma; -phase; unit; cell; comprising; spacedly; disposed; plates; chemical; modifier; incorporated; plates; plates; range; stable; intersheet; distances; corresponding; oxidation; oxidation; compositional; modifier; incorporated; solid; solution; nickel; hydroxide; material; promote; multiphase; structure; cycle life; positive electrode; positive electrode; electrochemical cells; electrochemical cell; electrochemical cell; cell comprising; cell comprising; solid solution; solid solution; solid solution; oxide material; oxide material; phase including; unit cell; rechargeable electrochemical; rechargeable electrochemical; nickel hydroxide; nickel hydroxide; nickel hydroxide; phase structure; phase structure; alkaline rechargeable; alkaline rechargeable /429/252/419/428/