Iron Separator Flow Battery Performance

How much does an all-iron flow battery cost?

Benefiting from the low cost of iron electrolytes, the overall cost of the all-iron flow battery system can be reached as low as $76.11 per kWh based on a 10 h system with a power of 9.9 kW. This work provides a new option for next-generation cost-effective flow batteries for long duration large scale energy storage.

Do hydrogen side-reactions cause electrolyte imbalance in all-iron flow batteries?

Conclusions Hydrogen side-reactions lead to an electrolyte imbalance in all-iron flow batteries, and this occurs simultaneously for iron and hydrogen species. Fortunately, this problem can be corrected using an appropriate rebalancing system.

Are all-iron flow batteries a promising prospect for LDEs?

Combined with high reliability, high performance and low cost, the all-iron flow battery demonstrated a very promising prospect for LDES. The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

What are the principles of sealed iron flow batteries?

Abstract Principles of sealed iron flow batteries are introduced and a semi-empirical model that incorporates the hydrogen evolution reaction and electrolyte rebalancing is developed. Hydrogen generation rates are measured using pressure measurements in sealed vessels.

Are all-iron flow batteries better than vanadium?

In this regard, all-iron flow batteries (AIFB) are a particularly promising candidate, as iron is abundant, leading to a much lower and more stable cost compared to vanadium [, , , ]. During charging, the ferrous ion (Fe 2+) is reduced to iron (Fe 0) on the anodic side and is oxidized to ferric ion (Fe 3+) at the cathodic side.

What are the advantages of all-iron flow battery?

Benefitting from all-liquid type electrochemical reaction in both catholyte and anolyte, varied discharge duration can be easily obtained in the all-iron flow battery by changing the volume of electrolyte. The resulted battery demonstrated impressive performance of LDES, which enables enormous cost reduction of a flow battery.