An electrolyte is a chemical that conducts electrical current. It is used in batteries to make the ions flow, producing current. Electrolytes ionizes when dissolved in suitable solvents such as water. Most soluble salts, acids, and bases are electrolytes.
An electrolyte used in cells, "electrolytic cells" carries the ions between the electrodes of the cell. Electrolytic cells may be used using to extract constituent elements and compounds contained in the solution.