In a dry battery, electrical energy is converted into chemical energy.

 

Yes, in a dry battery, electrical energy is converted into chemical energy, as electrolysis is known as the process of converting chemical energy into electrical energy, so this property is used in dry batteries, as its idea is based on converting electrical energy into temporarily stored chemical energy, until use, that chemical energy is converted into electrical energy.

It is worth noting that dry batteries are commonly used, on a daily basis, just as we see them in the cells used in watches, remote controls such as TV remote and other devices used on a daily basis, and they cannot be dispensed with.

Can the dry battery be recharged

It can't.

It is difficult to charge dry battery cells, as dry batteries generally consist of an electrochemical cell consisting of electrolytes with low humidity that appear in the form of a paste, and that dry paste facilitates its transport and carrying, and the reason why it is not rechargeable is that its constituent cells contain a fixed amount of reactant chemicals, and with use those substances end and the reaction becomes irreversible.

Types of dry batteries

• Primary batteries.
• Secondary batteries.

The types of dry batteries are divided into two basic types, which are primary or primary dry batteries, and secondary dry batteries, and the difference between them is that primary batteries cannot be recharged once the electrochemical reactions in them have ended, unlike the secondary dry battery that can be recharged to renew reactions and use them again.

Primary batteries: The types of primary dry batteries are divided into "zinc-carbon battery, mercury battery, alkaline battery, silver oxide battery":

Zinc and carbon battery: This dry battery consists of a metal plate in which there is an electrolyte paste with low humidity, with a metal electrode, and this metal plate also contains the element zinc so that its base acts as an anode, that is, a negative electrode.

While carbon acts as a positive electrode "cathode", and is surrounded by manganese dioxide, with a low-moisture electrolyte, for example, ammonium chloride paste, producing a voltage of up to 1.5 volts, and the battery works after the reactions as follows "Zn + 2MnO 2 + 2NH 4 Cl → Mn 2 O 3 + Zn (NH 3 ) 2 Cl 2 + H 2 O".

Mercury battery: In a dry mercury battery, mercury oxide acts as a "cathode", while zinc acts as a positive electrode, and the reactions of the battery at the anode include "Zn + 2OH – → ZnO + H 2 O + 2e -" while on the other side of the cathode "HgO + H 2 O + 2e – → Hg + 2OH -" to eventually operate the battery as "Zn + HgO → ZnO + Hg".

Alkaline battery: A dry alkaline battery usually has reactions in the same way as a dry zinc carbon battery, where sodium hydroxide replaces ammonium chloride, and the battery works in an electrochemical reaction like this: "2MnO 2 + 2e – + H 2 O → Mn 2 O 3 + 2OH -".

Silver oxide cell: In the dry battery of silver oxide, the silver element enters to act as an inert support in the process of silver oxide reduction, and zinc oxidation, and this battery works in several reactions to be the final reaction when working "Zn + H 2 O + Ag 2 O → Zn (OH 2 ) + 2Ag"

Secondary batteries: It is the second type of dry battery, as it can be recharged and used, unlike the basic dry batteries that cannot be recharged again, and there are many types of secondary batteries in the following:

Nickel-cadmium battery: In a nickel-cadmium battery, the cadmium element enters to act as an "anode", while the nickel plate works as a "cathode" and the separator between them acts as an insulator, as for the electrolyte material, it may be "sodium hydroxide" or "potassium hydroxide".

It is worth noting that this type of battery may cause very harmful environmental effects when disposed of, due to the presence of the element cadmium, so it is not used at the moment.

Lithium-ion: This dry battery is one of the most common dry batteries in laptops, as well as iPod devices and mobiles, as its electrodes consist of carbon and lithium, and it is known that it does not need regular maintenance, as well as does not represent significant damage when disposed of as in nickel and cadmium batteries.

Nickel–metal hydride battery: It is one of the most popular secondary rechargeable dry batteries, and at the end of its electrochemical reactions produces nickel oxyhydroxide NiO (OH).

Advantages of dry battery

• Easy to use in remote controls.
• Completely safe when moving and moving.
• Small and lightweight.

Disadvantages of dry battery

• Non-rechargeable, use again.
• It may sometimes come with some flaws, which affect the performance of your own device.
• It may be subject to rapid wear and tear.
• Rapid discharge at high temperatures, so put in a cool place.

Does the dry battery charge

No.

The primary dry battery of all kinds is not charged, as it comes already charged with electrochemical energy, and once these reactions are completed, the dry battery cannot be recharged, however, secondary dry batteries such as mobile phone batteries, laptops, including nickel-metal hydride battery, and lithium-ion battery can be recharged.