18CHE12 / 18CHE22 MODULE 1 ENGINEERING CHEMISTRY

Electrochemistry and Energy storage systems

Use of free energy in chemical equilibria: Thermodynamic functions: Definitions of free energy and entropy. Cell potential, derivation of Nernst equation for single electrode potential, numerical problems on E, EO, and Ecell.Electrochemical energy systems: Reference electrodes: Introduction, construction, working and applications of Calomel electrode. Ion-selective electrode -Definition, construction and principle of Glass electrode and detennination of pH using glass electrode. Electrolyte concentration cells, numerical problems. Energy storage systems: Introduction, classification -primary, secondary and reserve batteries. Construction, working and applications ofNi-MH and Li-ion batteriess