Daniell cell

A Daniell cell is a type of battery that converts chemical energy into electrical energy using two different metals—usually zinc and copper—immersed in solutions of their respective salts. When connected by a wire, a chemical reaction occurs: zinc loses electrons and becomes Zn²⁺ ions, while copper gains electrons, creating a flow of electric current. This flow powers electrical devices. The cell has two compartments separated by a barrier to allow ion exchange but keep the metals apart, ensuring a steady flow of electricity until the reactants are used up.