Electrochemical cell
![A demonstration electrochemical cell setup resembling the Daniell cell. The two half-cells are linked by a salt bridge carrying ions between them. Electrons flow in the external circuit.](/Images/godic/202501/10/ElectrochemCell3820.png")
![The Bunsen cell, invented by Robert Bunsen.](/Images/godic/202501/10/Bunsen_cell3821.jpg")
An electrochemical cell is a device capable of either generating electrical energy from chemical reactions or facilitating chemical reactions through the introduction of electrical energy. A common example of an electrochemical cell is a standard 1.5-volt cell meant for consumer use. This type of device is known as a single Galvanic cell. A battery consists of two or more cells, connected in either parallel or series pattern.