what is electrodes?
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one of two points (terminals) where an electric current enters or leaves a battery, etc.
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An electrode is an electrical conductor that makes contact with the nonmetallic circuit parts of a circuit, such as an electrolyte, semiconductor or vacuum. If in an electrochemical cell, this is also known as an anode or cathode. The anode is an electrode in which electrons leave the cell, and oxidation occurs at this point. Electrons enter the cell through the cathode, where a reduction process occurs.
An electrode cannot be permanently fixed because it can take the role of an anode or cathode, depending on the electron flow direction.
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