The core of a flow battery system consists of four primary components: two external storage tanks, a central electrochemical cell stack, an ion-exchange membrane, and a set of pumps and plumbing. The system operates by storing energy in liquid chemical solutions, known as electrolytes, which are held in. . A flow battery, or redox flow battery (after reduction–oxidation), is a type of electrochemical cell where chemical energy is provided by two chemical components dissolved in liquids that are pumped through the system on separate sides of a membrane. This electrolyte is not housed inside this “battery body” and can be stored in separate tanks. Amidst the growing need for clean and carbon-free green. .