That was a little account of alkaline batteries

July 04 [Thu], 2013, 11:03
With electronic or electricity based items and objects greatly in use today, cells and batteries have become a household name. These are the two objects that are found in every household today and without which, life seems impossible. Be it toys, remotes of fans, television sets, air conditioners or DVD players, watches, digital cameras, cell phones or any other daily use product, nothing can function without batteries. Although there is a huge difference between the cells and Aspire 7551 battery for used by all of this gadgetry, the object known to us as a cell or battery has more or less similar functionality and mechanism. Whatever might be the type, mechanism or shape of the cell, it is something that we are using in our daily life and it has become a driver for our world since a great proportion of whatever this world contains today, is driven by electricity or some voltage, so to speak.

One of the major and most commonly used types of cells is the alkaline battery which is used in toys such as robots and cars as well as remotes, wall clocks and other light duty household items. This battery is one of the many rechargeable batteries that we have today and run on an electrochemical reaction.

Alkaline batteries run on the reaction that takes place between manganese oxide that is chemically written as MnO2 and zinc that is represented by a chemical symbol of Zn. When it comes to the mechanism and shape, alkaline batteries are very closely related to zinc-carbon batteries that run on the reaction between manganese oxide and carbon powder. In zinc-carbon batteries, the cell is packed in a can that is made up of zinc. This can not only makes up for the traditional cylindrical covering of the cell but also plays part as the negative terminal.

The positive terminal in this cell is the carbon rod that is surrounded by a mixture of powdered carbon and manganese oxide. The electrolysis of the two chemical compounds is aided by an electrolyte that is made using a mixture of ammonium chloride and zinc chloride dissolved in water. In comparison to zinc-carbon batteries, alkaline batteries have longer shelf lives and higher energy densities, given that that voltage is the same. Although there are batteries with higher capacity and energy density but they cost way more in price and hence become uneconomical for most buyers. These cells are known as button cell silver-oxide batteries. Hence, keeping in view the capacity, energy density, shelf life and cost effectiveness, an alkaline battery becomes the most feasible choice for most buyers.

The company, Everready Battery, is deemed to be the first producer of the alkaline batteries working for which, a Canadian engineer, invented it somewhere in the 1950s. The name of the engineer was Lewis Urry. However it was not until the 9th of October, 1957 that Lewis Urry, along with P. A. Marsal and Karl Kordesch filed the United States patent for alkaline batteries which finally got granted in the year 1960. Union Carbide Corporation was the first to be assigned the patent. That was a little account of alkaline batteries but talking chemically, the choice of zinc powder has been excellent for sure as it provides more surface area to the negative terminal and hence allows for sufficient amount of current.

The cathode or the positive terminal of the alkaline battery is composed of manganese oxide as discussed above. In this case, as opposed to the mechanism of zinc-carbon batteries, the electrolysis or the chemical reaction is aided by the electrolyte known as potassium hydroxide and not by ammonium chloride or zinc chloride dissolved in water. Voltage produce by a single of such batteries is around 1.5 volts, however a series of many alkaline batteries may allow for higher voltages to be achieved. Types of alkaline batteries have also been found whose voltage production ranges up to 1.65 volts. This would, most probably, be a non-discharged and zero-load battery.

The voltage however depends greatly on the chosen contents of the zinc oxide in the electrolyte or the manganese dioxide. Under load, an average alkaline cell would present a voltage of no more than 1.3 volts but no Aspire 7741 battery for lesser than 1.1 volts. Even when fully discharged, these batteries are left with a voltage of 0.8 to 1.0 volts.

Easily available on the internet as well as in the market, alkaline batteries can be bought for very cheap prices. Different brands produce varying qualities of the cell and as per the choice, consumers can buy the one they consider to be the best for their gadget.
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