Nickel-hydrogen energy storage system project

Could a nickel-hydrogen battery be used for stationary energy storage?

Australian energy giant AGL will install a nickel-hydrogen battery at its Torrens Island power station site in South Australia as it explores the potential opportunities that the technology could provide for stationary energy storage applications

How much does a nickel-hydrogen battery cost?

The estimated cost of the nickel-hydrogen battery based on active materials reaches as low as ∼$83 per kilowatt-hour, demonstrating attractive characteristics for large-scale energy storage. battery|large-scale energy storage|hydrogen catalysts|

Can advanced nickel-hydrogen batteries achieve the $100 kWh−1 target for grid storage?

The attractive characteristics of the conventional nickel-hydrogen battery inspire us to explore advancednickel-hydrogenbatterywithlowcosttoachievetheUnited States Department of Energy (DOE) target of $100 kWh−1for grid storage (14), which is highly desirable yet very challenging.

What is a nickel-hydrogen battery?

While the Torrens Island pilot is expected to be the first deployment of a nickel-hydrogen battery in Australia, the technology is not new. Nickel-hydrogen batteries consist of a stack of electrodes inside a pressurised gas tank. The cathode is nickel hydroxide and the anode is hydrogen.

What is the energy density of a nickel-hydrogen battery?

Such a nickel-hydrogen battery exhibits an energy density of ∼140 Wh kg−1(based on active materials) in aqueous electrolyte and excellent rechargeability with negligible capacity decay over 1,500 cycles.

How long does a nickel-hydrogen battery last?

Historically, conven- tional nickel-hydrogen battery shows outstanding recharge- ability without capacity decay for over 30,000 cycles, which has beenappliedextensivelyinaerospace suchassatellitesandaircraft with service life of more than three decades due to its high re- liability, stability, and durability (13).