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nature : metal hydride / nickel batteries commonly called. Once known as the low nickel / metal hydride batteries. The so-called "high-pressure nickel / metal hydride batteries," anode active material for hydrogen, the use of hydrogen fuel cell electrode structure for the plate; For the cathode active material NiO (OH); For KOH electrolyte solution together on the pressure vessel (pressure about 4 MPa) above. When the negative charge precipitation hydrogen retention in containers, their instructions can be used to pressure the battery charge-discharge state. The high energy density batteries, long life, resistance to overcharge and over-discharge, the aerospace industry has been applied.
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