Title:
ALKALI STORAGE BATTERY, AND ALKALI STORAGE BATTERY SYSTEM
Document Type and Number:
Japanese Patent JP2015028845
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an alkali storage battery which is small in self discharge, and has a good capacity-keeping rate even if a high-temperature (85°C) shelf test is repeated on the alkali storage battery in the state of being charged.SOLUTION: An alkali storage battery according to one embodiment of the present invention comprises: a nickel positive electrode which includes a nickel hydroxide serving as a primary positive electrode active material and zinc added thereto by 10-15 mass% to the mass of nickel in the positive electrode active material; a negative electrode of a hydrogen-absorbable alloy expressed by the general formula, LaReMgNiM(where Re represents at least one element selected from rare earth elements other than La and Y; and M represents at least one element selected from Al, Co, Mn and Zn), provided that x/y≥0.4; and an alkaline electrolyte with at least one compound selected from a tungsten compound, a molybdenum compound and a niobium compound added thereto by 0.5-2.0 mass% to the mass of the positive electrode active material.
Inventors:
SAKATANI TOSHIHIRO
SUGII HIROMASA
OCHI MAKOTO
SUGII HIROMASA
OCHI MAKOTO
Application Number:
JP2013157287A
Publication Date:
February 12, 2015
Filing Date:
July 30, 2013
Export Citation:
Assignee:
SANYO ELECTRIC CO
International Classes:
H01M10/30; H01M4/32; H01M4/38; H02J7/02; H02J7/34
Attorney, Agent or Firm:
Patent business corporation eye Py WIN