![]() Texts describing battery anodes or cathodes certainly implicitly consider the case of the discharge. During charge the positive is an anode, the negative is a cathode.During discharge the positive is a cathode, the negative is an anode.On the other hand, the role of each electrode is switched during the discharge/charge cycle. 1).įigure 3: Discharge/charge of a secondary battery represented as an electrochemical cell, with electrons and current direction.ĭuring normal use of a rechargeable battery, the potential of the positive electrode, in both discharge and recharge, remains greater than the potential of the negative electrode. The electrochemical reaction that takes place at the negative of the zinc electrode of a Nickel-Zinc battery during discharge : An oxidation reaction is an electrochemical reaction that produces electrons.During charge, the positive electrode is an anode, and the negative electrode is a cathode.During discharge, the positive electrode is a cathode, and the negative electrode is an anode.The positive electrode is the electrode with a higher potential than the negative electrode.When naming the electrodes, it is better to refer to the positive electrode and the negative electrode. ![]()
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