The combined processes of oxidation and reduction couldn’t occur in a power cell without an internal way to carry electrons back to the anode, balancing the external flow of current. After the electrons do their work powering the light bulb, they re-enter the cell at the cathode, where they combine with the active material, manganese dioxide, in a process called reduction. At that time, the anode material, zinc, gives up two electrons per atom in a process called oxidation, leaving unstable zinc ions behind. Is this normal?īatteries may seem simple, but the delivery of packaged power is a complicated electrochemical process.Įlectric current in the form of electrons begins to flow in the external circuit when the device-a light bulb for example-is turned on.
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