Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Hiroyuki Sakamoto0
Kazuhiro Ohkawa0
Date of Patent
February 1, 2011
Patent Application Number
11704341
Date Filed
February 9, 2007
Patent Primary Examiner
Patent abstract
A battery is adapted such that a nickel hydroxide particle group constituted of a number of nickel hydroxide particles filled in a void part of a positive electrode substrate contains, at a ratio of 15 wt % or less, small-diameter nickel hydroxide particles each having a particle diameter of 5 μm or less. The positive electrode substrate is configured such that a front-surface-side nickel layer and a back-surface-side nickel layer are made larger in thickness than a middle nickel layer, and an average thickness B of either the front-surface-side nickel layer or the back-surface-side nickel layer, which is thicker one, and an average thickness C of the middle nickel layer satisfy a relation of C/B≧0.6.
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