A cathode is the electrode through which electric current flows out of a polarized electrical device. In electrochemical cells, it is the site of reduction reactions, attracting cations or positive charges from the electrolyte.

Cathode

cathode

An electrode is a conductor through which electricity enters or leaves a medium, such as an electrolyte, semiconductor, or vacuum. It plays a crucial role in electrochemical cells, batteries, and various electronic devices by facilitating the flow of electric current and enabling chemical reactions.

electrode

Electric current is the flow of electric charge through a conductor, typically measured in amperes. It is a fundamental aspect of electricity, enabling the operation of electrical devices and the transmission of power across distances.

electric current

polarized electrical device

Electrochemical cells are devices that convert chemical energy into electrical energy through redox reactions, consisting of two half-cells connected by a salt bridge or porous membrane. They are fundamental in powering batteries and are essential for various applications, from portable electronics to industrial processes.

electrochemical cells

Reduction reactions involve the gain of electrons by a molecule, atom, or ion, often accompanied by a decrease in oxidation state. These reactions are fundamental in various chemical processes, including energy production in biological systems and industrial applications like metal extraction.

reduction reactions

cations

positive charges

Electrolytes are substances that dissociate into ions when dissolved in water, enabling them to conduct electricity. They are crucial for numerous physiological functions, including nerve impulse transmission and muscle contraction, and are essential in maintaining the body's fluid balance.

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