ABSTRACT
This chapter provides an overview of electrochemistry from its history to various applications and from synthesis to analytical techniques. The field of electrochemistry has received intense attention in applied and fundamental research areas. The history of electrochemistry helps us to understand the technological applications in both industrial production and daily life in the 21st century. “Electrochemistry is that branch of science and technology which deals with interrelated transformations of chemical and electric energy”. The basic criterion for choosing material for electrochemistry is if it is able to conduct electricity. The electrodeposition by applying a pulse signal of nanocrystalline metals like silver, gold, nickel, cobalt, iron, platinum, and copper, ranging in size from 5 nm to 100 nm, has been reported. The environment is polluted day-by-day due to either natural or man-made activities. In the future, a lot of low cost, miniature portable analytical devices can be developed utilizing the concepts of electrochemistry.
