The electrochemical phenomena for thermodynamic characterization and analysis of molecules and ions (Electro-analytical Chemistry) were utilized since the beginning of the twentieth century. The quantitative relationship (voltage, current, conductance, capacitance, and concentration) makes it possible to apply electrochemistry to the detailed characterization of chemical species and processes in the solution phase. Its major areas of application are namely electro-analysis, electro-synthesis, electrochemical energy storage and conversion, corrosion science, metal finishing and electrometallurgy. Electrochemistry has found extensive new applications for the study of chemical reaction and adsorption phenomena. Some of the most exciting applications of electrochemistry have occurred in organic chemistry and biochemistry. The control of an oxidation or reduction process through electrochemistry is more precise in comparison to chemical reactions.