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Nickel-zinc battery



Battery specifications
Energy/weight 60 W·h/kg
Energy/size 170 W·h/L
Power/weight > 900 W/kg
Charge/discharge efficiency
Energy/consumer-price 0.30-0.50$/W·h
Self-discharge rate
Time durability
Cycle durability 100-500
Nominal Cell Voltage 1.7 V
Charge temperature interval

The nickel-zinc battery (sometimes abbreviated NiZn) is a type of rechargeable battery commonly used in the light electric vehicle sector.

Additional recommended knowledge

Contents

History

Developed by an Irish chemist, Dr James J. Drumm (1897-1974)[1] and installed in four 2-car Drumm Railcar sets between 1932 and 1946 for use on the Dublin-Bray line. Although successful they were then withdrawn when the batteries became life expired.

Applications

The battery is still not commonly found in the mass market, but they are considered as the next generation batteries used for high drain applications, and is expected to replace lead-acid batteries because of their higher energy to mass ratio and higher power to mass ratio (up to 75% lighter for the same power), and are relatively cheap compared to nickel-cadmium batteries (expected to be priced somewhere in between NiCd and lead-acids, but have twice the energy storing capacity).

Electrochemistry

2Ni(OH)2(s) + Zn(OH)2(s) ↔ 2Ni(OH)3(s) + Zn(s)

References

  1. ^ Famous Irish Chemists: James J. Drumm
 
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Nickel-zinc_battery". A list of authors is available in Wikipedia.
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