Electrochemical concepts

device for spontaneous conversion of chemical into electrical energy

physical constant: electric charge of one mole of electrons

type of physical quantity

measure of tendency of a substance to gain or lose electrons

electromotive force of a half reaction cell versus standard hydrogen electrode

quantification of the electrical interactions between ions in solution

laboratory device in electrochemistry

gradient of electrochemical potential, usually for an ion that can move across a membrane

chemical element or compound that donates one or several electrons to another element or compound

chemical element or compound that accepts one or several electrons transferred to it from another element or compound

Electrical property

effect in electrochemistry

In electrochemistry, overpotential is the potential difference (voltage) between a half-reaction's thermodynamically determined reduction potential and the potential at which the redox event is experimentally observed. The term is directly related to a cell's voltage efficiency. In an electrolytic cell the existence of overpotential implies that the cell requires more energy than thermodynamically expected to drive a reaction. In a galvanic cell the existence of overpotential means less energy is recovered than thermodynamics predicts. In each case the extra/missing energy is lost as heat. The

solid-state electrical conductor which conducts due to the movement of ions

thumb|160px|right|Polystyrene sulfonate, a [[cation-exchange resin, is typically supplied with as the counterion.]]

effect produced upon the plates of a voltaic battery, or the electrodes in an electrolytic cell, by the deposition upon them of the gases liberated by the action of the current

conductivity per molar concentration of electrolyte

measure of the ability of a solution containing electrolytes to conduct electricity

electrochemical effect