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(Pauline 2006)
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Home Page - Batteries as they are today - Hydrogen Fuel Cells
Batteries today are powered by chemical reactions. There are four main parts:
The negative terminal:
This is made with copper or a similar metal. The most important characteristic of the negative terminal is that the metal conducts electricity well.
The positive terminal:
This is made with iron or similar. It conducts electricity well, but not as well as copper (or whatever metal was used for the negative terminal)
The Acid:
The acid reacts with the copper, charging it with electrons. It reacts also with the iron, but no so quickly. The result of this is the copper terminal becomes negatively charged, and the iron terminal becomes positively charged. The electrons want to go from negative to positive, so when you connect the two together, they move towards the positive in order to neutralize the two terminals.
And lastly, the case:
This is to store a very powerful acid, so it needs to be made of an acid-resistant material, usually a metal.
By Brett
Comments:
Last Modified 6/22/05 10:48 AM
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