Unit 1 Background TheoryOrigin of potential – electrical double layer – reversible electrode potential – standard hydrogen electrode – emf series – measurement of potential – reference electrodes (calomel and silver/silver chloride) indicator and ion selective electrodes – Nernst equation – irreversible processes – kinetic treatment – Butler-Volmer equation – overpotential, activation, concentration and IR overpotential – its practical significance – Tafel equation and Tafel plots – exchange current density and transfer coefficients.Unit 2 Batteries: Primary BatteriesThe chemistry, fabrication and performance aspects, packing classification and rating of the following batteries: (The materials taken, their function and significance, reactions with equations, their performance in terms of discharge, capacity, and energy density to be dealt with). Zinc-carbon (Leclanche type), zinc alkaline (Duracell), zinc/air batteries; Lithium primary cells – liquid cathode, solid cathode and lithium- ferrous sulphide cells (comparative account).Unit 3 Secondary BatteriesLead acid and VRLA (valve regulated (sealed) lead acid), nickel-cadmium, nickel-zinc, nickel-metal hydride batteries, lithium-ion batteries, ultrathin lithium polymer cells (comparative account). Advanced batteries for electric vehicles, requirements of the battery – sodium-beta and redox batteries.Unit 4 Fuel CellsDescription, working, principle, anodic, cathodic and cell reactions, fabrication of electrodes and other components, applications, advantages, disadvantages and environmental aspects of the following types of fuel cells: proton exchange membrane fuel cells, alkaline fuel cells, phosphoric acid, solid oxide, molten carbonate, direct methanol fuel cells. Membranes for fuel cells: Nafion Polymer blends and composite membranes; assessment of performance recent developments.Unit 5 Fuels for Fuel CellsHydrogen, methane, methanol – sources and preparation, reformation processes for hydrogen clean up and storage of the fuels use in cells, advantages and disadvantages of using hydrogen as fuel.