Title:
POSITIVE ELECTRODE ACTIVE MATERIAL FOR ALKALINE SECONDARY BATTERY
Document Type and Number:
Japanese Patent JP2002025553
Kind Code:
A
Abstract:
To provide positive electrode active material for alkaline secondary batteries with a high utilization factor.
The positive electrode active material for alkaline secondary batteries has powder with water oxidation nickel as a principal component of which high order oxide of cobalt exists on the surface at least, wherein, when an infrared-absorption spectrum is measured by the KBr method, following spectrum characteristics are shown: A. (T1000-T700)/300≤0.05 (wherein, T1000 expresses permeability (% indication) in a wavelength of 1000 cm-1, T700 expresses permeability (% indication) in a wavelength of 700 cm-1); B. The maximum of the permeability in the wave number area of T700 to T1000 is 40% or less.
Inventors:
MIYAMOTO SHINICHI
Application Number:
JP2000209793A
Publication Date:
January 25, 2002
Filing Date:
July 11, 2000
Export Citation:
Assignee:
TOSHIBA BATTERY
International Classes:
H01M10/30; H01M4/32; H01M4/52; (IPC1-7): H01M4/52; H01M4/32; H01M10/30
Attorney, Agent or Firm:
Koji Nagato (1 person outside)