Alkaline Fuel Cell Battery
FUEL CELLS
The fuel cell is an electrochemical mechanism, like a battery, which feats a chemical reaction to supply electrical energy. In difference to a battery, the chemicals required to generate the energy are given outwardly. In many cases, the reactants are H2 and O2 gases. The H2 gases is generally produced from natural gas whereas air provides the O2.
TYPES OF FUEL CELLS:
There are six main fuel cell types under development or accessible industrially. Global generating capacity based on fuel cells is between 1000 MW and 2000 MW.
1. Alkaline Fuel Cell:
The alkaline fuel cell (AFC) employs an electrolyte made up of a strong alkali solution. This allows the reaction at the oxygen electrode to take place more rapidly that in most fuel
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Good reliability- working times are much more greater and longer than batteries. Quality of power provided does not degrade over time.
Low temperature- many fuel cells like PEMFC, DMFC have produced low heat transmission which is ideal for military application.
High temperature- many fuel cells produce high-grade process heat along with electricity and are compatible to cogeneration applications such as power and combined heat for residential purpose.
High efficiency- Fuel cells have better and higher efficiency than gas or diesel
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Fuel cells greatly reduce CO2 and harmful pollutant emissions.
Memory effect- when the fuel cells are getting refueled, they have no memory effect.
Maintenance- since there are a small number of moving parts in the system.
Greenhouse gases- if the hydrogen produce from the electrolysis of water driven by renewable energy, then using fuel cells eliminates greenhouse gases over the whole cycle.
DISADVANTAGES
There are few disadvantages of fuel cells, some are given below:
Highly flammable- since hydrogen is a very powerful source of fuel, it is very flammable. It burns at very extensive concentration in air between 4 to 75 %.
Expensive- hydrogen takes a lot of time to separate element from other due to which it’s very expensive.
Difficult storage- hydrogen is very hard to shift around. When speaking about oil or coal, they can be easily sent or carried off. But when talking about hydrogen, just moving even lesser amounts is a very expensive matter. For which, the transport and storage of this type of substance is deemed
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