A simple voltaic cell is made by immersing one zinc plate and one copper plate inside a water diluted sulfuric acid solution. As shown in the figure, if the copper plate and zinc plate are connected externally with an electrical load, an electric current starts flowing from copper plate to zinc plate through the load. … Read more
Different types of battery with various configurations are available. With the inventions of various new consumer electronic devices, electric vehicles, renewable energy storage needs, space and military applications, battery power nowadays is consumed as food. If we look around us, we find a bunch of batteries hiding inside almost every device we have, wall clocks, … Read more
Daniell Cell is the modified version of Voltaic Cell. Polarization drawback of Voltaic Cell is overcome in a Daniell Cell and it can be considered as an improved version of Voltaic Cell. Constructionwise Daniell Cell is quite simple. Construction of Daniell Cell It consists of a copper container filled with a concentrated solution of copper … Read more
Construction of Leclanche’ Battery In commonly available cylindrical Leclanche’ cell available in the market has following constructional features. A cylindrical can made by thin sheet of zinc, serves as anode and it also holds all other active and electrolyte materials of the battery. Ideally, zinc used in the battery should be 99.99% pure. Although, the … Read more
Zinc Carbon Battery Zinc carbon battery is being popularly used during last 100 years. Generally there are two types of zinc carbon battery generally available – Leclanche battery and Zinc chloride battery. Both of these are primary battery. This battery was invented by Goerge Lionel Leclanche in 1866. This was the first battery in which … Read more
During World war II it became essential to have constant voltage, high capacity, long life battery system for using under extreme tropical condition. The technology of zinc mercuric oxide battery had been known for more than 100 years, but it was first practically used by Samuel Ruben during World war II. Because of its constant … Read more
Before going in detail of this subject i.e. charging and discharging of battery , we will first try to understand what is oxidation and reduction. Because, battery are discharged or charged due to oxidation and reduction reactions. For understanding the theory of oxidation and reduction, we can directly go to an example of chemical reaction. … Read more
Magnesium is used as anode materials in primary battery because of its high standard potential. It is a light metal. It is also easily available being a low-cost metal. Magnesium/manganese dioxide (Mg/MnO2) battery has twice the service life i.e. capacity of the zinc/manganese dioxide (Zn/MnO2) battery of same size. It also can retain its capacity, … Read more
Battery Cells Battery is an electrical element where electrical potential is produced due to chemical reaction. Every electrochemical reaction has its limit of producing electric potential difference between two electrodes. Battery cells are those where these electro-chemical reactions take place to produce the limited electric potential difference. For achieving desired electric potential difference across the … Read more
Batteries have become one of the most important and most used equipments these days. Batteries are used where the power supply is not regular, where low voltage is required (i.e. lower than supply voltage); watches, mobiles and many other small types of equipment that require lesser voltage, mainly run on battery. The main advantage of … Read more