Nickel-hydrogen storage battery and method of producing the same

• Main Authors: MIKI KOJI, ISE TADASHI, TAKEE MASAO
• Format: Patent
• Language: English
• Published: 06.01.2004
• Edition: 7
• Subjects: BASIC ELECTRIC ELEMENTS; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

A nickel-hydrogen storage battery having improved charge and discharge cycle characteristics even in high temperature, which has a negative electrode comprising a hydrogen absorbing alloy capable of electrochemically storing and releasing hydrogen, a positive electrode comprising nickel hydroxide as a main active material, and an alkaline electrolytic solution mainly comprising an aqueous potassium hydroxide solution, wherein the positive electrode contains a cobalt compound, a yttrium compound, and 100 ppm or more of lithium based on the total weight of the nickel hydroxide, the cobalt compound, and the yttrium compound.