Nickel Zinc (NiZn) Batteries

Characteristics

This rechargeable battery like the Nickel Iron battery uses an alkaline electrolyte.
Nickel-Zink batteries were developed as replacements for military Silver-Zinc batteries.

Cell voltage 1.65 Volts

 

Advantages

High rate capability (25C)
Good cycle life
Fast recharge capability
Can be deep cycled down to 100%.
Uses low cost benign materials.

Shortcomings

Heavy and bulky.
Low energy density.
High self discharge rate.
Solubility of zinc in the alkaline electrolyte limited life cycle.
Formation of zinc dendrites across the electrodes during recharge results in short circuiting and shortened life.

Applications

Traction applications
Electric Bicycles
Scooters
Lawnmowers

Costs

Low cost but higher than Lead acid