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Electrochemistry, electrolysis, electrocatalyst development
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Module 3
Electrode Kinetics and Reaction Mechanisms
Understanding Overpotential: Components and Definition
Define overpotential and identify its components (activation, ohmic, concentration).
2
Understanding Exchange Current Density
Explain the physical meaning of exchange current density.
3
Butler-Volmer Equation: Current-Overpotential Relationship
Apply the Butler-Volmer equation to describe current-overpotential behavior at an electrode.
4
Transfer Coefficient and Reaction Symmetry
Describe the role of the transfer coefficient in determining reaction symmetry.
Tafel Plots from Butler-Volmer
Derive and interpret Tafel plots from the Butler-Volmer equation in the high-overpotential regime.
Analyzing Tafel Plots: Slope & Exchange Current Density
Extract Tafel slope and exchange current density from experimental Tafel plots.
Tafel Slopes: Unpacking HER/OER Mechanisms
Explain the mechanistic significance of Tafel slope values for the Hydrogen and Oxygen Evolution Reactions (HER/OER).
Previous module
The Electrode-Electrolyte Interface
Next module
Mass Transport in Electrochemical Systems