In this orb of rapid technical development, our dependence on electrical and electronic products ever escalating day by day. The role of the battery is remarkable. A battery is a combination of one or more electrochemical cells that convert chemical energy into electrical energy. Each cell consists of two electrodes, namely anode and cathode with an electrolyte in between. At each electrode, takes some electrochemical reaction takes place leading to potential differences between theElectrodes. This potential difference known as electro-motive force drives the electrons. You can only be used once and tossed out, or can be recharged and used for years. On the basis of this kind are discarded batteries and large, into primary and secondary batteries.
Primary batteries are those that are normally not rechargeable, they are on the electrochemical reactions take place irreversibly in this battery. Once the supply of reactants is exhausted, it would be nothing. Then you have to go foranother. During the assembly itself, it can generate electricity without any further notice. They are also dubbed as disposable batteries. They are nothing more than dry-cells, since the electrolyte used in this is a paste like material, rather than a liquid. Primary cells are devices in which low power consumption. They have more initial tension and a good performance. Zinc-carbon batteries are low cost. You used a bad performance and low temperatures, especially in toys, flashlights, radiosetc.
Alkaline-manganese oxide batteries offer good performance, better performance and low temperatures, the costs will be higher. It is seen in airplanes with transmitters or receivers, television, calculator, etc. Zn / HgO batteries offer high energy density, constant voltage, good shelf life, etc., and in photography, hearing aids, pacemakers, sensors, etc. in the military zinc / silver-zinc battery provides good energy density, high speed and performance in clock, rocket, space will be usedApplications, etc. For memory chips are used in electrical equipment Li/SOCl2 batteries. They have a longer shelf life. Zn / air batteries offer good durability and a high energy density, and they change with temperature. They are used in traffic lights, clocks, electric fences, etc.
Secondary batteries are the batteries, which are as the electrochemical reactions can be reversibly re-loaded, meaning that it is also possible to convert electric energy into chemical energy,by raising it. It is necessary to recharge before using it for free, because the components in the discharged state at the beginning. These batteries can be by the presentation of electricity and the devices in the provision of electricity can act calculated to be named as chargers.The charger or battery can be recharged and get done as often as possible. Lead-acid batteries are the known secondary batteries.
They have decent high and low temperature performance, low cost, lowEnergy density, low charge retention and in cars, airplanes, lawn mowers used. Ni-Cd, Ni / Fe, Ni / Zn bids durability, longer life. Ni-Cd can be used in airplanes, power applications. Ni / Zn batteries are used in motorcycles, military vehicles, etc.-coordinate silver oxide batteries such as Zn / AgO, Cd / AgO good discharge include longer shelf life, high energy density, high cost, etc. The former is used in submarines , military equipment, etc. and this is used in satellites, power tools.Li-Poly batteries used in mobile phones and they are not volatile, overpriced.
Primary batteries are less expensive when compared to the secondary. They have higher energy density compared to the latter. Primary Battery wispy and offers his life, but they can not be reused. Instead of proper disposal when they are thrown, it will cause pollution. Secondary batteries vote bank-to-high power density and high discharge. The charge retention is poor.Only a few standards are available.
Proper storage is as high temperatures and high humidity is required, the batteries can be transmitted. They should be kept in a discharged state since they can discharge if they are in the assembly and as the days pass, they become broken.
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