Electrochemistry
Steve Lower's Electrochemistry Pages:
http://www.chem1.com/acad/webtext/elchem/ or
http://www.chem1.com/acad/pdf/c1xElchem.pdf
Fuel Cells http://www.fuelcells.org/
General Electrochemistry: http://www.tannerm.com/electrochemistry/electrochem.htm
Simulations by Gary Bertrand: http://web.umr.edu/~gbert/Electro/Electrochem.html