Electrochemical Cell |
Electrolytic Cell |
It is a device which converts chemical energy into electrical energy. |
It is a device which converts electrical energy into chemical energy. |
The redox reaction is spontaneous and is responsible for the production of electrical energy. |
The redox reaction is non-spontaneous and electrical energy is supplied to make the reaction to occur (i.e., chemical change to take place). |
The two half cells are set up in different containers and are connected through salt bridge or porous partition. |
Both the electrodes are placed in the solution or molten electrolyte in the same container. |
In electrochemical cell, anode is negative and cathode is positive electrode. |
In electrolytic cell, anode is positive and cathode is negative electrode. |
The electrons move from anode to cathode in external circuit. |
The electrons are supplied by the external battery and enter through cathode and come out through anode. |
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