Cells and batteries are devices in which a spontaneous redox reaction produces electrical current. A lot of people get confused between the terms cells and batteries, what would be the difference between them? The battery is a system formed by two electrodes, but it is only one unit.
The battery is made up of a set of batteries connected in series.
We can note the presence of four batteries in this battery.
Follow now examples of each of these electrical circuits:
Alkaline battery
This pile uses zinc (Zn), potassium hydroxide (KOH) and manganese dioxide (MnO2) as reagents, it is also known as alkaline dry cell. The advantage of these batteries is their durability, as they have a lower risk of leakage.
Due to these factors, this type of pile has gained great market share. The nomenclature was chosen due to the presence of potassium hydroxide which is a basic (alkaline) compound. It is used in the operation of radios, for example.
silver oxide battery
The reagent used in this battery, as the name implies, is silver oxide. Zinc is also present as an anode. This battery is a source of energy for automatic cameras and electronic calculators, and despite the high price, it has spread in the market.
Nickel-cadmium battery
Composed of chemical elements: Nickel (Ni) and Cadmium (Cd), it is used in camcorders and cell phones and has the advantage of being rechargeable. In recent years this battery has become one of the most used in the world. An external generator (charger) is responsible for recharging this type of battery.
lead battery
It is responsible for keeping cars in operation, they have been manufactured since 1915, and are very durable batteries. Although the name of this battery only mentions lead, the battery is also composed of an aqueous solution of sulfuric acid (H2ONLY4).
By Líria Alves
Graduated in Chemistry
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Would you like to reference this text in a school or academic work? Look:
SOUZA, Líria Alves de. "What is the difference between batteries and batteries?"; Brazil School. Available in: https://brasilescola.uol.com.br/quimica/qual-diferenca-entre-pilhas-baterias.htm. Accessed on June 27, 2021.
