II. Equilibrium Thermodynamics
Lecture 8: The Nernst Equation
1
Chemical Activity
In general, we can dene the chemical activity of species i as follows,
i =
G
Ni
= kB T log(ai ) + zi e (per particle)
(1)
Nj ,T,P,
Alternatively, we can consider the chemica

III. Reaction Kinetics
Lecture 14: Faradaic Reactions in Concentrated
Solutions
1
Reactions in Concentrated Solutions
Note: Please see the course notes from 2009 for a detailed stochastic theory
and formal derivations of reaction rates.
Until now, we have

III. Reaction Kinetics
Lecture 12: Faradaic Reactions in Dilute
Solutions
As we begin to study electrochemical energy systems out of equilibrium,
we are rst concerned with the kinetics of Faradaic (charge-transfer)
reactions.
1
Stochastic Theory of Reacti

Lecture 4: Dynamics of Equivalent Circuits
1. Simple Equivalent Circuit for a Battery
Batteries have a finite charge capacity Qmax. So the open circuit voltage is dependent upon
the current charge state Q. Figure 1 shows a typical dependence of the open c

I. Equivalent Circuit Models
Lecture 1: Basic Physics of Galvanic Cells
In this lecture, we give an overview of electrochemical cell operations, and define basic
terminologies frequently used in a discussion of electrochemical cell operations.
1. Electroc

II. Equilibrium Thermodynamics
Lecture 7: Statistical Thermodynamics
To understand compositional effects on
, we need to consider some simple statistical model.
1. Lattice gas
We consider a lattice gas of N indistinguishable finite-sized particles (Ns-N i

I. Equivalent Circuit Models
Lecture 2: Electrochemical Energy Conversion
eCathode
Chemical fuel
Sunlight
Mechanical
pressure
Energy
in
Galvanic
Cell
Electrical
Energy
Resistor
Electrical
Current
Galvanic cells convert different forms of energy (chemical

I. Equivalent Circuit Models
Lecture 3: Electrochemical Energy Storage
In this lecture, we will learn some examples of electrochemical energy storage. A general
idea of electrochemical energy storage is shown in Figure 1. When the electrochemical energy
s

I. Equivalent Circuit Models
Lecture 6: Impedance of Electrodes
1. Flat Electrodes
In the previous lecture, we leant about impedance spectroscopy. Electrochemical impedance
spectroscopy is the technique where the cell or electrode impedance is platted ver

III. Reaction Kinetics
Lecture 15: Ion Adsorption and Intercalation
1. Surface adsorption/intercalation of neutral species
Adsorption on a surface or intercalation in a bulk solid involves strong particle interactions
which go beyond dilute solution theor

II. Equilibrium Thermodynamics
Lecture 11: Reconstitution Electrodes
Reconstitution electrodes undergo phase transformations driven by
Faradaic reactions. In equilibrium, the state of charge increases by convert
ing one immiscible phase into another at a

IV. Transport Phenomena
Lecture 16: Concentration Polarization
We have previously discussed open circuit voltage, which can be derived
from the Nernst equation, and activation overpotentials, which can be de
rived from the Butler-Volmer equation. This can