General Electrochemistry

"Electrochemical Methods: Fundamentals and Applications, Second Edition" by Bard & Faulkner.
This is the book if you want a good theoretical description of the fundamentals of electroanalytical chemistry. It belongs on every serious electrochemist's bookshelf. It may not be easy reading, but only because the material is challenging: It is all well presented. The first edition (1980) lacked some of the exciting, newer topics in electrochemistry (microelectrodes and STM for example) but it couldn't be beat for the basics! This second edition removes this last complaint!

A "Student Solutions Manual" for the second edition is also available.

"Laboratory Techniques in Electroanalytical Chemistry" by Kissinger & Heineman.
This second edition of this compilation updated an already pretty good book. It is not as theoretical as the Bard book, but certainly adequate.  The coverage is quite broad: The book covers microelectrodes, film and modified electrodes, molten salts, electrochemical detection in HPLC, and other varied topics.  Nearly everyone who may be tempted to use electrochemical methods will find something for them here.

 NEW  "Handbook of Electrochemistry" by Cynthia G. Zoski, ed.
This book is a compilation of chapters that covers a most of research electrochemistry. The first chapters introduce the basics of electrochemistry, reference electrodes, and electrochemical cell design.  Later chapters cover microelectrodes, spectroelectrochemistry, SECM, and non-aqueous electrochemistry. It is more expensive than Sawyer but is more modern.

"Electrochemical Systems, 3rd ed." by Newman & Thomas-Alyea.
This book is part of the Electrochemical Society series. It is the only book in this section that deals with electrochemistry from a chemical engineers point of view. It is the only one that discusses primary and secondary current distributions. Liquid-junction potentials are dealt with in some depth.