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Nickel Metal Hydrive Battery For Electric Vehicals - Online Papers

Nickel Metal Hydrive Battery For Electric Vehicals

Electric vehicles can benefit us in many ways. Comparing with the internal combustion engine, EVs don’t cause pollution when operating. They can run in a long period of time. Economically, because these vehicles using battery, they reduce the oil import and the imbalance trading in the US and also the users save a lot of money. The cells used for these vehicles are called Nickel metal hydride battery which are very high power, long life, quick charge and easy to maintain.
The NiMH battery stores hydrogen as a reaction product in the solid phase. The anode electrode contain hydrogen material that can allow electrochemical storage and release of hydrogen during charge and discharge. ...

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Ni(OH)2 at the positive electrode to form NiOOH. Ni now change from +2 to +3.
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. We can see that it is different from other alkaline electrode such as NiCd which water is produced at both electrode during charge and used up during discharge. In the NiMH battery, the constant average concentration can reduce the corrosion and swelling.
MATERIAL REQUIRED
Because the NiMH battery need to store a large amount of hydrogen to produce high energy, it is desirable to have high electrode capacity. Importantly, in the desire of MH, the range of metal to hydrogen bond strengths must be from 6 to 12 kcal /mol. If the bond strength is too weak, hydrogen will not react with the alloys and will be evaporate as a gas. If the bond strength is too large, the MH electrode becomes oxidized and does not store hydrogen reversibly. ...

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Nickel Metal Hydrive Battery For Electric Vehicals. (2006, November 27). Retrieved October 2, 2026, from http://www.essayworld.com/essays/Nickel-Metal-Hydrive-Battery-Electric-Vehicals/56235

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"Nickel Metal Hydrive Battery For Electric Vehicals." Essayworld.com. November 27, 2006. Accessed October 2, 2026. http://www.essayworld.com/essays/Nickel-Metal-Hydrive-Battery-Electric-Vehicals/56235.

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PAPER DETAILS

Added: 11/27/2006 08:36:30 PM
Category: Science & Nature
Type: Premium Paper
Words: 610
Pages: 3

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