NI-ZN STORAGE BATTERY AND METHOD TO PRODUCE ACTIVE MASSES, MAINLY, FOR ITS ELECTRODES Russian patent published in 2009 - IPC H01M10/30 H01M4/26 

FIELD: electrical engineering.

SUBSTANCE: nickel-zinc storage battery comprises housing accommodating interconnected electrodes place in electrolyte. Interconnected positive electrodes are fitted between negative electrodes and separated therefrom by separators. Every electrode consists of current conducting foil-like element with edge flanged along its perimetre. Active mass is built-up on foil side surfaces. Negative or positive electrode being produced, homogeneous mix of active mass consists of either binder and interlayer compound of zinc or nickel with graphite. Active mass outer surfaces support separators. Method of making active mass comprises separate production of interlayer compounds of zinc and nickel with graphite. For this mixes of zinc and nickel chlorides are preliminary heated to 85°C to 150°C. Then aforesaid surfaces are treated by 85%- to 95%-concentrated nitric acid for 1.5 to 5.0 and 2.0 to 6.0 h, respectively. Produced interlayer compounds are separately flushed to produce neutral reactions and dewatered. Dewatered compounds are, now, ground to finely produce negative or positive electrode.

EFFECT: higher reliability, specific capacity, lower weight and costs.

3 cl, 4 dwg, 2 ex