Volume 6 in the well-establish series Advances in Electrochemical Science and Engineering covers - among others - such important topics as time dependent modulation techniques and computer modeling by continuum and non-continuum methods. As in all previous volumes, the editors have succeeded in selecting highly topical areas of electrochemical research and in presenting authors who are leaders in their fields. The result is a compelling set of reviews which serves equally well as an excellent and up-to-date source of information for experienced researchers active in the field as well as an introduction for newcomers.