Question
Download Solution PDFThe positive plate of nickel-iron cell is made up of
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFNickel-Iron cell:
- Nickel-iron cell is in the charged condition, the active material on positive plates is Ni(OH)4 and that on the negative plates is iron (Fe)
- The positive and negative plates are held in a nickel-plated steel container; the plates being insulated from each other by hard rubber strips
- The container contains 21 per cent solution of KOH (electrolyte) to which is added a small amount of lithium hydrate (LiOH) for increasing the capacity of the cell
- It has lesser weight and longer life than that of a lead-acid cell
- The emf of this cell is about 1.36 V
- These cells are very suitable for portable work
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