We explain that what are examples of dry cells? The dry cells are so named because the medium which occurs at the chemical reaction that generates electricity and is a pasty medium dry, unlike other batteries this is liquid.
The electric current generated by dry cells is due to the chemical reaction that exists between two electrical conductors called electrodes, which are found in a substance, either liquid or pasty, which conducts electricity and is called an electrolyte.
Each electrode is at one end of the cell and when they come into contact, the circuit closes, allowing electrical flow between the two electrodes.
Examples of dry batteries
- Zinc-carbon batteries, which are the most common: The electrodes of these batteries are made up of a plate of zinc and manganese dioxide, which is mixed in a paste of ammonium chloride, which is the electrolyte used.
Manganese dioxide releases electrons that are transported by ammonium chloride and collected by a carbon rod that contains the battery, which allows the electrons to pass between the zinc and manganese layer.
These batteries can produce an electrical current of 1.5 volts that decreases with use, which is due to the bubbles that form in the carbon rod, since these bubbles prevent the passage of electrons in said rod.
- Another example of dry batteries are the so-called alkaline batteries, these owe their name to the electrolyte they use, which is alkaline and consists of potassium hydroxide, instead of ammonium chloride.
The difference between these two types of batteries is the duration, since they both produce the same energy which is 1.5 volts, but alkaline dry batteries have a longer life.