any device that converts chemical energy into electrical energy or electrical energy into chemical energy. (see electrolytic cell, voltaic cell)
a device for producing emf from chemical reactions within the cell. Also known colloquially as a battery. When the cell is connected into a suitable circuit it produces a current and delivers energy. In some cells the chemical reactions can be reversed by using another, stronger, source of emf to drive current backwards through the cell and put energy back. (See charging.) An example of such a reversible battery is the 12 V car battery which consists of six 2 V lead-acid cells.
a device capable of producing electric current by a spontaneous redox reaction
a system consisting of an anode, cathode, and an electrolyte, plus such connections (electrical and mechanical) as may be needed to allow the cell to deliver or receive electrical energy
Gives an electric current with a steady voltage as a result of an electron transfer reaction.
a system in which two electron conductors (the electrodes) are in contact with a conducting solution of ions (the electrolyte). The ionic and electronic conductors are connected so as to form a complete circuit through which charge can move. The charge is carried by electrons in part of the circuit and by ions in the electrolyte. Oxidation occurs at one electrode (the anode) while reduction takes place at the other (the cathode). So the electrons flow from the anode to the cathode.
A device containing two conducting electrodes, one positive and the other negative, made of dissimilar materials (usually metals) that are immersed in a chemical solution (electrolyte) that transmits positive ions from the negative to the positive electrode and thus forms an electrical charge. One or more cells constitute a battery.
A cell in which electrons and ions can flow by separate paths between two materials (a cathode and an anode), producing a current which in turn leads to corrosion or plating.
An electrochemical system consisting of an anode and a cathode in metallic contact and immersed in an electrolyte. (The anode and cathode may be different metals or dissimilar areas on the same metal surface.)
a device that removes metals from aqueous solutions by plating them as solid metal on the cathode or oxidises organic pollutants at the anode
An electrochemical cell is a setup used for creating an electromotive force (voltage) in a conductor separating two reactions. The current is caused by the reactions releasing and accepting electrons in to the different ends of the conductor. The most common example of an electrochemical cell is a standard 1.5-volt battery.