Alkaline storage battery

[Problem] To suppress increases in the resistance of nickel positive electrodes and assure sufficient battery capacity even after repeated pulse charging and discharging cycles with a large current. [Solution] This alkaline storage battery (10) contains aluminum (Al) in a hydrogen storage alloy nega...

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Bibliographic Details
Main Authors OCHI MAKOTO, TOKUDA MITSUNORI, KITAOKA KAZUHIRO, TAKEE MASAO
Format Patent
LanguageEnglish
Published 08.12.2015
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Summary:[Problem] To suppress increases in the resistance of nickel positive electrodes and assure sufficient battery capacity even after repeated pulse charging and discharging cycles with a large current. [Solution] This alkaline storage battery (10) contains aluminum (Al) in a hydrogen storage alloy negative electrode (12) and also includes Al in a nickel positive electrode (11). In a state where a prescribed charging and discharging cycle has completed, the Al content in the nickel positive electrode (11) is 0.25% by mass or greater of that in the positive electrode active material, and in powder x-ray diffraction of the positive electrode active material using Cu-Kα, the half-width of the (101) plane peak for Ni(OH)2 is controlled so as to be 0.5 (°/2 ) or greater.
Bibliography:Application Number: US201113989958