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Nickel Metal Hydrive Battery For Electric Vehicals
Essay specific features
Written by:
Lucille M
Date added:
June 11, 2011
Level:
University
Grade:
B
No of pages / words:
2 / 545
Was viewed:
7696 times
Rating of current essay:
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...
displayed 300 characters
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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...
displayed 300 characters
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