Technical FAQs 4

Are iron-based aqueous redox flow batteries the future of energy storage?

The rapid advancement of flow batteries offers a promising pathway to addressing global energy and environmental challenges. Among them, iron-based aqueous redox flow batteries (ARFBs) are a compelling choice for future energy storage systems due to their excellent safety, cost-effectiveness and scalability.

Are aqueous iron-based flow batteries suitable for large-scale energy storage applications?

Thus, the cost-effective aqueous iron-based flow batteries hold the greatest potential for large-scale energy storage application.

Are all-iron flow batteries a good choice for long-term energy storage?

The Fe (NTHPS)/Fe (CN) 6 RFB exhibits a capacity decay (2.2 %) over 2000 cycles. Alkaline all-iron flow batteries (AIFBs) are highly attractive for large-scale and long-term energy storage due to the abundant availability of raw materials, low cost, inherent safety, and decoupling of capacity and power.

Which aqueous organometallic complex is used in redox flow batteries?

All iron aqueous redox flow batteries using organometallic complexes consisting of iron and 3- [bis (2-hydroxyethyl)amino]-2-hydroxypropanesulfonic acid ligand and ferrocyanide as redox couple. Chem. Eng. J. 398, 125631 (2020). Chen, Q. et al. Organic electrolytes for pH‐neutral aqueous organic redox flow batteries. Adv. Funct.

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Iron complex flow battery

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Low-cost all-iron flow battery with high performance

Oct 1, 2022 · Long duration energy storage (LDES) technologies are vital for wide utilization of renewable energy sources and increasing the penetration of these technologies within energy

Iron complex with multiple negative charges ligand for

Feb 1, 2025 · Herein, a promising metal-organic complex, Fe (NTHPS), consisting of FeCl3 and 3,3′,3″-nitrilotris (2-hydroxypropane-1-sulfonate) (NTHPS), is specifically designed for alkaline

Asymmetric Iron Complex as a Potential Catholyte for

May 27, 2025 · An alkaline all-iron complex aqueous redox flow battery (AAICARFB) is an RFB that utilizes iron complex as the active material for both its anolyte and catholyte. A key

Non-nitrogenous bisphosphonate as a ligand for an all-soluble iron flow

Jun 18, 2025 · With the growing demand for stable and reliable grids, all-soluble iron (Fe) redox flow batteries offer a low-cost energy storage solution by using Fe and addressing corrosion

Highly Stable Alkaline All‐Iron Redox Flow

Oct 16, 2024 · This study introduces Fe(TEA-2S) anolyte for alkaline all-iron redox flow batteries, offering high stability, low membrane permeability,

Developing terpyridine-based metal complexes for non-aqueous redox flow

Jun 1, 2023 · This paper describes the design and synthesis of a series of terpyridine-based complexes of the first-row transition metals Cr, Mn, Fe, and Co for non-aqueous redox flow

Iron complex with multiple negative charges ligand for

Nov 28, 2024 · Alkaline all-iron flow batteries (AIFBs) are highly attractive for large-scale and long-term energy storage due to the abundant availability of raw materials, low cost, inherent

All-iron redox flow battery in flow-through and flow-over set

Abstract Significant differences in performance between the two prevalent cell configurations in all-soluble, all-iron redox flow batteries are presented, demonstrating the critical role of cell

Phosphonate-based iron complex for a cost-effective and

Mar 25, 2024 · Here, authors report an iron flow battery, using earth-abundant materials like iron, ammonia, and phosphorous acid. This work offers a solution to reduce materials cost and

Phosphonate-based iron complex for a cost-effective and

Abstract A promising metal-organic complex, iron (Fe)-NTMPA 2, consisting of Fe (III) chloride and nitrilotri- (methylphosphonic acid) (NTMPA), is designed for use in aqueous iron redox

Non-nitrogenous bisphosphonate as a ligand

Jun 18, 2025 · Summary With the growing demand for stable and reliable grids, all-soluble iron (Fe) redox flow batteries offer a low-cost energy

All-iron redox flow battery in flow-through

Abstract Significant differences in performance between the two prevalent cell configurations in all-soluble, all-iron redox flow batteries are

Iron-based catholytes for aqueous redox-flow

Nov 10, 2023 · Redox-flow batteries (RFBs) are promising electrochemical energy storage devices to load-level intermittent power from renewable

Multi-ligand chromium ion complexes for near-neutral iron

Jul 15, 2025 · Iron–chromium redox flow batteries (ICRFBs) are widely researched and incorporated into energy storage systems. However, traditional acidic ICRFBs have high

Multifunctional asymmetric bi-ligand iron chelating agents

May 10, 2024 · Zinc‑iron flow batteries hold great potential as stationary storage due to their attractive cost and abundance of materials; however, they still suffer from precipitation

Non-nitrogenous bisphosphonate as a ligand for an all-soluble iron flow

Jun 18, 2025 · Summary With the growing demand for stable and reliable grids, all-soluble iron (Fe) redox flow batteries offer a low-cost energy storage solution by using Fe and addressing

A High Potential, Low Capacity Fade Rate Iron

Oct 7, 2022 · An iron complex, tris (4,4′-bis (hydroxymethyl)-2,2′-bipyridine) iron dichloride is reported, which operates at near-neutral pH with a redox

Phosphonate-based iron complex for a cost

Mar 25, 2024 · Here, authors report an iron flow battery, using earth-abundant materials like iron, ammonia, and phosphorous acid. This work

A High Potential, Low Capacity Fade Rate Iron Complex

Dec 30, 2024 · An iron complex, tris(4,4′-bis(hydroxymethyl)-2,2′-bipyridine) iron dichlo-ride is reported, which operates at near-neutral pH with a redox potential of 0.985 V versus SHE.

A high-capacity and ultra-stable neutral all-iron redox flow battery

Dec 1, 2025 · A promising metal-organic complex, iron (Fe)-NTMPA2, consisting of Fe (III) chloride and nitrilotri- (methylphosphonic acid) (NTMPA), is designed for use in aqueous iron

Aqueous iron-based redox flow batteries for large-scale

May 31, 2025 · ABSTRACT The rapid advancement of flow batteries offers a promising pathway to addressing global energy and environmental challenges. Among them, iron-based aqueous

Development of Iron Complex-based Aqueous Redox

Feb 25, 2025 · Development of Iron Complex-based Aqueous Redox Flow Batteries for Large-scale Energy Storage. Doctoral dissertation, Harvard University Graduate School of Arts and

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