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Electrochemistry is a branch of chemistry that deals with the relationship between electricity and chemical reactions. It is the study of chemical processes that involve the transfer of electrons, which is also known as redox reactions. These processes can involve the conversion of chemical energy into electrical energy, or the reverse, where electrical energy is used to drive a chemical reaction.

Electrochemical reactions involve the movement of ions and electrons between two electrodes, which are usually made of metals or conductive materials. These reactions can be classified as either oxidation reactions, where electrons are lost, or reduction reactions, where electrons are gained. The two reactions are always paired and occur simultaneously, which is why they are also called redox reactions.

Electrochemistry is important in a wide range of applications, including batteries, fuel cells, electroplating, corrosion protection, and electroanalysis. By understanding the principles of electrochemistry, scientists and engineers can design and optimize electrochemical systems for various practical applications.

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