What Is the Electrochemical Principle of Ni-MH Battery? Ni-MH batteries use Ni oxide as the positive electrode, hydrogen storage metal as the negative electrode, and lye (mainly KOH) as the electrolyte. When the nickel-hydrogen battery is charged: Positive electrode reaction: Ni(OH)2 + OH- → NiOOH + H2O–e- Negative reaction: M+H2O +e-→ MH+ OH- When the
What Are the Differences Between Primary Batteries and Secondary Batteries? The main difference is that the active material is different. The active material of the secondary battery is reversible, while the active material of the primary battery is not. The self-discharge of the primary battery is much smaller than that of the secondary battery. But
What Is A Battery? Battery is device for energy conversion and storage, which converts chemical or physical energy into electrical energy through reactions. According to the different energy conversion of battery, battery can be divided into a chemical battery and a physical battery. A chemical battery or chemical power source is a device that converts chemical energy into
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