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How NiMH Batteries Work ?

June 26,2023


Compared with the nickel-cadmium battery of the same volume, the capacity of the nickel-metal hydride battery is doubled, the charge and discharge cycle life is also longer, and there is no memory effect. The active materials of the positive electrode of the Ni-MH battery are Ni0OH (during discharge) and Ni (OH) 2 (during charging), and the active materials of the negative plate are H2 (during discharge) and
H20 (during charging), the electrolyte adopts 30% potassium hydroxide solution, and the electrochemical reaction during charging and discharging is as follows: