Nickel Metal Hydrive Battery For Electric Vehicals

Essay specific features

 

Issue:

Miscellaneous

 

Written by:

Lucille M

 

Date added:

June 11, 2011

 

Level:

University

 

Grade:

B

 

No of pages / words:

2 / 545

 

Was viewed:

7696 times

 

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Essay content:

At both electrode, oxidation-reduction reactions take place in an alkaline medium consisting of 30% by weight KOH in water. When charging, Ni(OH)2 at the positive electrode becomes oxidized and the metal hydride becomes reduced. In fact, the hydrogen which was separated from water come to react with the metal in the negative electrode to form MH...
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On the other hand, the hydroxyl ion ( from water) reacts with Ni(OH)2 at the positive electrode to form NiOOH. Ni now change from +2 to +3. M + H2O + e = MH + OH Ni(OH)2 +OH = NiOOH + H2O + e From equation (1) and (2) there is no net change in electrolyte quantity or concentration over the charge and discharge cycle...
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