Question 4Arrange the following secondary batteries in increasing order of their specific energy: Li-Ion, Pb-Acid and Ni-MH.
Question
Arrange the following secondary batteries in increasing order of their specific energy:
- Li-Ion
- Pb-Acid
- Ni-MH
Solution
The specific energy of a battery is a key parameter that determines how much energy a battery can store per unit weight. It is usually measured in Watt-hours per kilogram (Wh/kg).
Here are the specific energies for the batteries mentioned:
- Lead-Acid (Pb-Acid): 30-50 Wh/kg
- Nickel-Metal Hydride (Ni-MH): 60-120 Wh/kg
- Lithium-Ion (Li-Ion): 150-200 Wh/kg
So, in increasing order of their specific energy, the batteries would be arranged as follows:
Pb-Acid < Ni-MH < Li-Ion
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