what is electrochemical cell

An electrochemical cell is a device that generates electrical energy from chemical reactions or uses electrical energy to cause chemical reactions. There are two main types of electrochemical cells: galvanic (or voltaic) cells, which generate electrical energy from spontaneous redox reactions, and electrolytic cells, which use electrical energy to drive non-spontaneous redox reactions, a process known as electrolysis. Galvanic cells have two half-cells consisting of separate oxidation and reduction reactions, while electrolytic cells use electric currents to facilitate the cell reaction. Both types of cells consist of two electrodes (an anode and a cathode) and an electrolyte, and they can be connected in parallel or series to make a battery