Battery Essay

1958 Words 8 Pages
A Battery (Electricity) is a device that makes electric current through motion of cells which are the components of the battery. They are devices that convert their inner chemical energy into electrical energy. A battery has of two or more cells which are connected together in order to give out electricity. Batteries are commonly used in single cells such as the ones used to power radios, watches and small electrical appliances that are used in everyday life. They are also used to supply energy to various machines or tools such as hearing aids and automobiles, and sizes like portable systems at different areas. They are also a resource for the use of direct current (DC). Batteries are mostly impractical because they are used for very large …show more content…
Some cells transform light energy of to electricity, they are called solar cells. Some cells require some amounts of heat energy to produce electricity which are from thermoelectric batteries. Also nuclear cells use radiation from radioactive activity to produce electricity in order to function. All batteries consist of both primary and secondary cells. A primary cell is a cell that has to be changed or replaced once the chemical components have been used up. This is when the battery is completely used up and can’t provide any more energy to function. A secondary cell has a type of effect in which the chemical reactions can be reversed in order to restore the chemical components which have been depleted from the cell. They are also the source of storage batteries which are also known as rechargeable batteries found in cell phones, tablets and other handheld devices. Another type of cell is the fuel cell, they use naturally given materials which will be constantly given to the …show more content…
We can also use the thermodynamic free energy law to change with the Faraday Law to alter and to calculate used voltage of the cell (which is 4.0 volts) in the chemical reaction:
LiC6 + CoO2 = C6 + LiCoO2
In the case of the rechargeable battery, the electrochemical oxidation-reduction reactions are reversible at both electrodes. For example, when the battery is recharged, the overall electrochemical reduction reaction at the negative electrode is identical to the electrochemical oxidation reaction that proceeded at the negative electrode when the battery was discharged, only written in reverse. For the non-rechargeable battery, they cannot have their process reversed. When an alkaline battery is recharged, by reversing the direction of electron current flow, one of the oxidation-reduction reactions won’t be reversible. This is due to the substances used to create the cells and the capability for the cell to undergo different pathways to which the electrons travel. For example, when the battery is charged or the cell is unused and holds full power, the reduction reaction that takes place at the negative end could not be the reverse of the oxidation reaction that happens when the battery is discharged. Also when metal oxidation is the only way in which an oxidation reaction occurs in the discharge, a

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