Impact Factor:

19.8

DOI number:

10.1002/adfm.202302077

Journal:

Advanced Functional Materials

Abstract:

Redox flow batteries (RFBs) are a promising option for long-duration energystorage (LDES) due to their stability, scalability, and potential reversibility.However, solid-state and non-aqueous flow batteries have low safety and lowconductivity, while aqueous systems using vanadium and zinc are expensiveand have low power and energy densities, limiting their industrial application.An approach to lower capital cost and improve scalability is to utilize cheapEarth-abundant metals such as iron (Fe). Nevertheless, all-iron RFBs havemany complications, involving voltage loss from ohmic resistance, sidereactions such as hydrogen evolution, oxidation, and most significantlyelectrode plating, and dendrite growth. To address these issues, researchershave begun to examine the effects of various alterations to all-iron RFBs, suchas adding organic ligands to form Fe complexes and using a slurry electrodeinstead of common materials such as graphite or platinum rods. Overall,progress in improving aqueous all-iron RFBs is at its infant stage, and newstrategies must be introduced, such as the utilization of nanoparticles, whichcan limit dendrite growth while increasing storage capacity. This reviewprovides an in-depth overview of current research and offers perspectives onhow to design the next generation of all-iron aqueous RFBs

First Author:

Shawn Belongia

Indexed by:

Journal paper

Correspondence Author:

Xiang Wang, Xin Zhang

Discipline:

Engineering

Document Type:

J

Volume:

34

Issue:

5

Page Number:

2302077

Translation or Not:

no

Date of Publication:

2023-06-05

Included Journals:

SCI

Links to published journals:

https://advanced.onlinelibrary.wiley.com/doi/full/10.1002/adfm.202302077