Principle of large-scale energy storage of nickel-hydrogen batteries

Can a nickel-hydrogen battery be used for grid storage?

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

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 much does a nickel-hydrogen battery cost?

The nickel-hydrogen battery exhibits an energy density of ∼140 Wh kg −1 in aqueous electrolyte and excellent rechargeability without capacity decay over 1,500 cycles. The estimated cost of the nickel-hydrogen battery reaches as low as ∼$83 per kilowatt-hour, demonstrating attractive potential for practical large-scale energy storage.

What is the energy density of Ni-H Battery?

The Ni-H battery shows energy density of 1 140 Wh kg− (based ∼ on active materials) with excellent rechargeability over 1,500 cy- cles. The low energy cost of $83 kWh− based on active ma- terials achieves the DOE target of $100 kWh− ∼ 1, which makes it promising for the large-scale energy storage application.

What is a nickel based battery?

Introduction Nickel-based batteries include nickel-cadmium (commonly denoted by Ni-Cd), nickel-iron (Ni-Fe), nickel-zinc (Ni-Zn), nickel-hydrogen (Ni-H ), and nickel metal hydride (Ni-MH). All these batteries employ nickel oxide hydroxide (NiOOH) as the positive electrode, and thus are categorized as nickel-based batteries.

Is Ni-H2 battery technology a good choice for grid-scale energy storage?

The renaissance of advanced Ni–H 2 battery technology is particularly attractive for future grid-scale energy storage applications. Renewable energy technologies have attracted great interest because of their resource abundance, sustainability, and zero direct carbon and other air-pollutant emissions.