How much does a zinc-iron redox-flow battery cost?

A zinc-iron redox-flow battery under $100 per kW h of system capital cost Energy Environ. Sci., 8 ( 2015), pp. 2941 - 2945, 10.1039/c5ee02315g Chem. Rev., 115 ( 2015), pp. 11533 - 11558, 10.1021/cr500720t Toward a low-cost alkaline zinc-iron flow battery with a polybenzimidazole custom membrane for stationary energy storage

How much does an alkaline zinc-iron flow battery cost?

In this work, a cost model for a 0.1 MW/0.8 MWh alkaline zinc-iron flow battery system is presented, and a capital cost under the U.S. Department of Energy's target cost of 150 $ per kWh is achieved. Besides, the effects of electrode geometry, operating conditions, and membrane types on the system cost are investigated.

How much does a Zn-Fe flow battery cost?

It is worth noting that the working current density of alkaline Zn-Fe flow batteries is ranging from 35 to 160 mA cm−2 . In this range, the capital costs of all flow rates are under 150 $ kWh −1, which meets the DOE's target cost for energy storage technologies.

How to improve the working current density of a zinc-iron flow battery?

Therefore, tremendous efforts should be made to improve the working current density, such as increasing the specific surface area of electrodes, adopting membranes with high ion conductivity, or improving the conductivity of supporting electrolytes . Fig. 3. Capital cost for 0.1MW/0.8 MWh zinc-iron flow battery system. 4.2. Cost comparisons

What are the advantages of a flow battery?

When discharging, the stored chemical energy gets converted back to electricity. The external storage allows for independent scaling of power and energy, which is a defining feature of flow batteries. A key advantage of this kind of battery is its ingenious ability to increase energy capacity.

Are Zn-Fe flow batteries a good alternative to V-V Flow batteries?

Zn-Fe flow batteries, feature the advantages of abundant zinc metal reserve, high energy density, and low price, becoming a promising alternative to V-V flow batteries. Over the past 20 years, enormous efforts have been devoted to zinc-iron flow batteries and huge progress has been made.