EL3402 Syllabus - Electrodics and Electrocatalysis - 2021 Regulation Anna University

EL3402 Syllabus - Electrodics and Electrocatalysis - 2021 Regulation Anna University

EL3402	ELECTRODICS AND ELECTROCATALYSIS	LTPC

3003

COURSE OBJECTIVES:

• To impart necessary basic knowledge in order to understand, analyze and solve problems related to electrochemical processes.

UNIT I	ELECTRICAL DOUBLE LAYER	9

Thermodynamics of ideally polarizable and non-polarizable interfaces- Lipman equationdetermination of interfacial tension, charge density, surface excess and double layer capacitance by electro capillary & bridge methods- Helmholtz, Gouy-Chapman and stern models of the double layer with discussion of potential and charge distribution inside the double layer-contact adsorption and its determination.

UNIT II	ELECTRODE KINETICS	9

Concepts of equilibrium potential, Nernst equation, overpotential and its different types, equilibrium exchange current density-derivation of Butler-Volmer equation –high field and low field approximations – charge transfer resistance and polarizability of the interface – concepts of rate determining step, Stoichiometric number, reaction order – Determination of kinetics parameters [ io, ks,()] by Tafel and linear polarization methods.

UNIT III	ELECTROCATALYSIS	9

Chemical catalysis and electro catalysis – comparison of electrocatalysts – electro catalysis in simple redox reactions involving adsorbed species – electronic and geometric factors in electrocatalysts -Discussion on the mechanisms of hydrogen evolution and oxygen reduction reactions.

UNIT IV	ELECTROCHEMICAL TECHNIQUES I	9

Ion selective electrodes – Principles of potentiometry and amperometry- determination of dissolved oxygen. Linear sweep voltammetry and cyclic voltammetry derivation of Randles- Sevciks equation – effect of sweep rate-analysis of cyclic voltammograms.

UNIT V	ELECTROCHEMICAL TECHNIQUES II	9

Potential step method (chronoamperometry) under diffusion control derivation of Cottrell equation for a planar and spherical electrode- significance of spherical diffusion – derivation of Ilkovic 65 equation.- Chronopotentiometry and analysis of chronopotentiograms-derivation of sands equation for constant current input under linear diffusion- concepts of Faradaic impedance –derivation of kinetic parameters from impedance measurements – Nyquist and bode plots for simple redox reactions-principles of scanning probe techniques-STM-AFM and SECM – working principles of electrochemistry.

TOTAL: 45 PERIODS

COURSE OUTCOMES: Upon completion of the course,

• Students would have the knowledge on electrical double layer, electrocatalysis and different types of Electrochemical techniques.

TEXT BOOKS:

1. J.O.M Bockris & A.K.N. Reddy, “Modern Electrochemistry”, Vol.2, Plenum Press (Chapter 7 for unit I: Chapters 8 & 9 for unit II ; chapter 10 for unit III), 1996.
2. A.J.Bard & L.R. Faulkner, ”Electrochemical Methods Fundamentals and Applications”, John Wiley & Sons. 3nd Edition, 2001.

REFERENCES:

1. Paul Delahay, “Double Layer Structure and Electrode Kinetics”, 1965 and publication.
2. James A. Plam Beck , “Electroanalytical Chemistry – Basic Principles and Applications”, John Wiley & sons, Wiley Publication, 1982