Nickel Iron Battery
What is a Nickel Iron Battery?
A Nickel-iron battery is a rechargeable battery used for storing electric power. A Nickel-Iron(NiFe) battery contains nickel hydroxide and iron plates. The nickel(III) plates have a positive charge, and the iron plates have a negative. Each cell of this battery gives about 1.2 V of nominal voltage.
These batteries have cell durability of more than 30 years with repeated deep discharges. The slow power discharge is because the solubility of the reactants in the electrolytic solution is significantly low.
What are the applications of a Nickel Iron Battery?
Nickel Iron batteries find their application in various fields for power storage. Some of them are,
Solar Applications: The robust nature of NiFe batteries makes them suitable for solar power production. In solar applications, these batteries can fully charge in 4 hours and take overcharges and deep discharges.
Car Headlights: Due to the low self-discharge rate of only 20% to 30%. NiFe batteries produce current in the car’s electrical system and run the air conditioning.
Electrical Engines: Metro train propulsion systems in the United Kingdom and North America use Nickel Iron batteries.
How does a Nickel Iron Battery work?
Charging: The charging of the batteries takes place in the potassium hydroxide solution. Oxygen gets transferred from one plate to another. The anode is super oxidized, while the cathode has less oxidation.
Discharging: In a closed circuit, the Nickel iron battery experiences deoxidation on the positive side. While the oxidation of Iron plates, the charge starts to flow through the electrical circuit. Oxygen naturally gets attracted to Iron, forming the iron oxide.
What are some big brands of Nickel Iron batteries?
Iron Edison is one of the largest Nickel Iron battery manufacturers and suppliers in the USA. Some of the other manufacturers of Nickel-iron batteries are:
- Battery Solutions, LLC
- HBL America, Inc.
- U.S. Materials Handling Corp.