C6745 Physico-chemical aspects of electrochemical methods

Faculty of Science
Spring 2017
Extent and Intensity
2/0/0. 2 credit(s) (plus extra credits for completion). Type of Completion: zk (examination).
Teacher(s)
RNDr. Mgr. Iveta Třísková, Ph.D. (lecturer)
Guaranteed by
prof. RNDr. Libuše Trnková, CSc.
Department of Chemistry - Chemistry Section - Faculty of Science
Supplier department: Department of Chemistry - Chemistry Section - Faculty of Science
Prerequisites
The prerequisite is the completition of the course C7050 - Electroanalytical methods
Course Enrolment Limitations
The course is also offered to the students of the fields other than those the course is directly associated with.
fields of study / plans the course is directly associated with
Course objectives
The aim of the course is to deepen students' knowledge in the field of electrochemistry and to familiarize them with the physico-chemical nature of well known and new electrochemical methods. In the course of this subject, the experimental part of the studied electrochemical methods will be presented in the form of demonstration tasks.
Learning outcomes
Completing the subject the students' knowledge in the field of electrochemistry will be deepened by the physico-chemical nature of the well known and new electrochemical methods. Practical courses will enable students to apply these methods in practice
Syllabus
  • 1. Potentiometry: concept of electromotive force and electrode potential; standard electrode potential; electrochemical thermodynamics; Nernst's equation; function of ion-selective electrodes and pH electrodes; Donnan equilibrium; Nikolsky-Eisenman equation; direct potentiometry and potentiometric titration; titration data evaluation, new software. 2. Voltammetric methods: electrode processes; electric double layer and its model; substance transport (migration, diffusion, convection) and Fick's laws; adsorption; electron transfer (ET-electron tranfer) and Markus theory of charge transfer; electrokinetic phenomena; charge transfer thermodynamics; Fermi energy; kinetics of electrode reaction (rate-determining step); physico-chemical nature of over-voltage and its significance; activation overvoltage and Butler-Volmer equation. 3. Elimination Voltammetry: New and Perspective Electrochemical Method; evaluation of faradayic and non-faradayic current component; partial voltammetric currents (kinetic, charging and diffusion current); elimination functions and current transformation; coefficient ß; adsorbed particle (peak-counterpeak signal), peak-counterpeak theoretical ratio and pre-chemical reaction. 4. Electrochemical study of corrosion: chemical and electrochemical corrosion; Tafel equation; corrosion potential; corrosion rate; corrosion mechanism; Pourbaix diagram and its physicochemical description. 5. Electrochemical impedance spectroscopy: physico-chemical nature of impedance; characterization of equivalent circuits; the importance of impedance elements; kinetic parameters obtained from   EIS; Warburg impedance; constant phase element. 6. Rotary disk electrode (RDE): steady-state; steady-state (steady state); microelectrodes; heterogeneous electron transfer; voltametric characteristic of RDE; Levich equation. 7. Chronomethods: Chronopotenciometry; chronoamperometry; pulse methods; Cottrel's equation; chronomethod evaluation; adsorption isotherm; the significance of time changes during polarization of the electrode; elementary steps and their time dependence. 8. Electrochemical quartz crystal microbalance: physico-chemical substance EQCMB; piezoelectric effect; adsorption; adsorption layer; Adsorption isotherms; polymerization; Sauerbrey equation and quantification of adsorption or polymeric layers. 9. Spectroelectrochemistry: advanced method and its significance; optical path in the spectroelectrochemical cell; optical fiber; synchronization of electrochemical and spectral responses; quantification of spectroelectrochemical data; the pitfalls of spectroelectrochemical experiments. 10. Dielectrimetry: dielectrics in electrical field ; dielectric polarization; dipole moment (permanent and induced); Debye's theory of dielectrics; evaluation of dipole moments; the relationship of the dipole moment and the structure and symmetry of the molecule. 11 + 12. Practical examples of discussed methods
Literature
    recommended literature
  • BARD, Allen J. and Larry R. FAULKNER. Electrochemical methods : fundamentals and applications. 2nd ed. New York: John Wiley & Sons, 2001. xxi, 833. ISBN 0471043729. info
  • OLDHAM, Keith B. and Jan C. MYLAND. Fundamentals of electrochemical science. San Diego: Academic Press, 1993. xxii, 474. ISBN 0125255454. info
Teaching methods
Lecture block supplemented by practical examples of discussed methods
Assessment methods
Oral exam
Language of instruction
Czech
The course is also listed under the following terms Spring 2016, spring 2018, Spring 2019, Spring 2020.
  • Enrolment Statistics (Spring 2017, recent)
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