Definition
Electrochemistry is a branch of chemsitry that focuses on chemical changes and how it relates to electricity and electrical potential. According to the Electrochemical Society, electrochemistry is "the study of the relationship between chemical and electrical change. Electrochemical science has a multitude of applications, ranging from solar technology to biomedical innovations."
"Electrochemistry is a branch of chemistry dealing with chemical reactions that involve electrical currents and potentials. Some chemical reactions that proceed spontaneously can generate electrical current, which can be used to do useful work; while other chemical reaction can be forced to proceed by using electrical current. While all this may sound rather esoteric, many practical devices based on these reactions, and many products made by these reactions are well-known, everyday household items."