Alkaline storage battery that can be used with stability in a wide temperature range
AssigneeSanyo Electric Co., Ltd.
InventorsKenji Arisawa, Takuya Tamagawa
Life of this patent
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Abstract
An alkaline storage battery having stable charging/discharging characteristics over a wide temperature range is provided. A nickel sintered base member is filled with a predetermined amount of nickel hydroxide according to a chemical impregnating method to produce a nickel positive electrode 1. At least one compound selected from a Ca compound, an Sr compound, an Sc compound, a Y compound, and a lanthanoid compound is added to the nickel positive electrode 1. An alkaline electrolytic solution for this storage battery contains at least one of KOH, NaOH, RbOH, and CsOH as an electrolyte, and has an alkaline concentration of 10 mol/l or higher.
Claims11
An alkaline storage battery, comprising an electrode element and an alkaline electrolytic solution that are enclosed in a battery casing, the electrode element including a nickel positive electrode and a negative electrode with a separator being inserted there between, the nickel positive electrode and the negative electrode being either rolled together or layered,
- wherein the nickel positive electrode contains one or more additive compounds selected from a calcium compound, a strontium compound, a scandium compound, an yttrium compound, and a lanthanoid compound,
- wherein the alkaline electrolytic solution has an alkaline concentration of 10 moles/liter or higher, and does not contain lithium hydroxide.
Dependencies are inferred from the claim text.