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Electrified Interfaces

Electrified Interfaces. The structure of the electrical double layer. Refresher-Galvanic cells. line notation (shorthand) | interface between two phases. || salt bridge Cd(s) | CdCl 2 (aq, M) || AgNO 3 (aq, M) | Ag(s). Half-Reactions. E cell = E cathode (+) - E anode(-).

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Electrified Interfaces

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  1. Electrified Interfaces The structure of the electrical double layer

  2. Refresher-Galvanic cells line notation (shorthand) | interface between two phases. || salt bridge Cd(s) | CdCl2(aq, M) || AgNO3(aq, M) | Ag(s)

  3. Half-Reactions Ecell= Ecathode (+) - Eanode(-)

  4. Standard Hydrogen Electrode Pt(s) | H2(g, A=1) | H+(aq, A=1) || Ag+(ag, A=1) |_________________________| NHE H+(aq, A=1) + e-  1/2H2(g, A=1) E0=0 V

  5. Electrochemical Series

  6. Nernst Equation for a half-rxn aOx + ne-  bRed R= gas constant T= temperature in Kelvin n= no. of electrons in half-rxn F= Faraday constant (96485 C/mol) A= activity (= 1 for a pure solid, liquid or solvent and expressed in mol/L for solutes and in bar for gases)

  7. Electrical Double Layer

  8. The electrical double layer

  9. More sophisticated model

  10. Recent Models

  11. Current Model BDM (Bockris, Devanathan, Muller)

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