Nernst Equation E(eq)=E(o)+(RT/nf)ln[Red/Ox] Thermodynamic Equilibrium i=0 FastSlow Butler-Volmer/Tafel Equations Current Flow i Static Potential (Faradaic)

Slides:

Advertisements

Similar presentations

Electrochemistry Quizzle Define the cathode. Where reduction occurs.

Advertisements

Electrode kinetics and mass transport Plan 1.Electrode reaction as a series of multiple consecutive steps 2. Mass transport phenomena: - diffusion - convection.

Evans Diagrams.

Chapter 4 Electrochemical kinetics at electrode / solution interface and electrochemical overpotential.

Haber Process Haber's Process. Summary The Haber Process combines nitrogen from the air with hydrogen derived mainly from natural gas (methane) into ammonia.

Introduction to Electroanalytical Chemistry

Introduction to electrochemical techniques

Introduction to electrochemistry - Basics of all techniques -

Electrochemistry for Engineers

EQUILIBRIUM. Many chemical reactions are reversible: Reactants → Products or Reactants ← Products Reactants form Products Products form Reactants For.

Bioelectromagnetism Exercise #1 – Answers TAMPERE UNIVERSITY OF TECHNOLOGY Institute of Bioelectromagnetism.

Electrochemical Camp 2012 Chapter 6 Potential Sweep Method Speaker : Yu-Yan Li Advisor : Kuo-Chuan Ho Aug, 6 th, Electro-Optical Materials Lab.,

Electrochemistry for Engineers LECTURE 4 Lecturer: Dr. Brian Rosen Office: 128 Wolfson Office Hours: Sun 16:00.

Lecture 5 OUTLINE PN Junction Diodes I/V Capacitance Reverse Breakdown

Slide 1 of E cell, ΔG, and K eq  Cells do electrical work.  Moving electric charge.  Faraday constant, F = 96,485 C mol -1  elec = -nFE ΔG.

Aim: How can scientists determine change on Earth?

Thermo & Stat Mech - Spring 2006 Class 13 1 Thermodynamics and Statistical Mechanics Open Systems and Chemical Potential.

Evaluation of Two Numerical Algorithms in Simulating Particle Condensational Growth and Gas/Particle Mass Transfer Yang Zhang and Christian Seigneur Atmospheric.

Cyclic Voltammetry. Current-Potential-Time Space Reversible System Time.

Thermo & Stat Mech - Spring 2006 Class 10 1 Thermodynamics and Statistical Mechanics The Third Law of Thermodynamics.

The meaning of the Second Law: Nonlocal effects in continuum physics Peter Ván BUTE, Department of Chemical Physics –Irreversibility concepts in thermodynamics.

Ion Pumps and Ion Channels CHAPTER 48 SECTION 2. Overview  All cells have membrane potential across their plasma membrane  Membrane potential is the.

2 Structure of electrified interface

EE415 VLSI Design The Devices: Diode [Adapted from Rabaey’s Digital Integrated Circuits, ©2002, J. Rabaey et al.]

Equilibrium Systems 15.1a: Closed Systems & Reaction Equilibrium.

Kristin Ackerson, Virginia Tech EE Spring The diode is the simplest and most fundamental nonlinear circuit element. Just like resistor, it has.

How Chemical Reactions Occur.  molecules must collide in order to react  - a reaction proceeds faster if the concentrations for the reacting molecules.

America’s Smartest City by Movoto Blog Rated Most Livable City by Places Rated Almanac and The Economist Named among Best in the World Places to Visit.

Lecture 2 Membrane potentials Ion channels Hodgkin-Huxley model References: Dayan and Abbott, Gerstner and Kistler,

Lecture 5: Chemical Reactions Outline: basic concepts Nonlinearities: saturation: Michaelis-Menten kinetics switching: Goldbeter-Koshland.

Chapter Goals (Membrane Potentials) After studying this chapter, students should be able to 1. explain what is meant by active transport and describe how.

The Nernst Equation Standard potentials assume a concentration of 1 M. The Nernst equation allows us to calculate potential when the two cells are not.

CHAPTER ONE CELL MEMBRANE STRUCTURE. CHAPTER TWO MEMBRANE TRANSPORT.

Lecture 2 Instructor: Rashedul Islam Course: Electronics I.

Nernst Equation Walther Nernst

Electric field, Electric Potential Difference and Capacitance.

Ion Channels as pores…... High capacitance of the PL bilayer is attributed to the small length of the H-C chains (space between the parallel plates).

Electrochemistry for Engineers

Electrochemistry for Engineers

2.3 – Solving Multi-Step Equations. Note: REVERSE Order of Operations! Ex. 1 -7(p + 8) = 21.

Structural description of the biological membrane. Physical property of biological membrane.

Mass-transfer-controlled electrochemical process (传质控制的电化学过程)

Objectives Airflow in Ducts Fluid dynamic review Duct Design.

Diffusion and Osmosis Transport- Passive or Active Passive transport-the movement of materials across a cell membrane without the expenditure of cell.

2.4 – Solving Equations with the Variable on Each Side.

Electrochemical Science and Technology: Fundamentals and Applications, Keith B. Oldham, Jan C. Myland and Alan M. Bond. © 2011 John Wiley & Sons, Ltd.

Structure of electrified interface

America’s Smartest City by Movoto Blog Rated Most Livable City by Places Rated Almanac and The Economist Named among Best in the World Places to Visit.

Introduction to Electroanalytical Chemistry

CH5715 Energy Conversion and Storage

Electrochemistry: Introduction Electrochemistry at your finger tips

Chapter 5. pn Junction Electrostatics

Laws of Thermodynamics (Part-1)

Fuel Cell Modeling In AMESim

By Syeda Zeenat Shirazi

Chapter 9 The chemical potential and open systems.

Quantitative Chemical Analysis

Reaction Mechanisms and Equilibrium

Ion Channels as pores…...

أنماط الإدارة المدرسية وتفويض السلطة الدكتور أشرف الصايغ

Electrochemistry.

Equation Review Given in class 10/4/13.

Equilibrium Chemical Equilibrium.

Chapter 1 – Semiconductor Devices – Part 2

Electrode kinetics and mass transport

2.4. Chronoamperometry measurement of currents as a function of time a kind of ‘controlled-potential voltammetry’ or ‘controlled-potential micro electrolysis.

Statements of the third law

Equation Review.

Linear Diffusion at a Planar Electrode The diffusive event involves two aspects: The variation of the concentration of the active species along.

Presentation transcript:

Nernst Equation E(eq)=E(o)+(RT/nf)ln[Red/Ox] Thermodynamic Equilibrium i=0 FastSlow Butler-Volmer/Tafel Equations Current Flow i Static Potential (Faradaic) Fast Nernst + Diffusion Slow Butler-Volmer/Tafel Faradaic Non-faradaic CAPACITIVE Dynamic Potential Controlled Potential

Double Step Chronoamperometry

W(CO) 4 bpy bpy=2,2’bipyridine Bpy  * t 2g eg(*)eg(*) d-orbitals on tungsten

Think like an inorganic chemist! Bpy  * t 2g eg(*)eg(*) e–e– Bpy  * t 2g e g (  *)

Current-Potential-Time Space Reversible System Potential Time Current