Research Progress and Prospect of All-Iron Redox Flow Battery Anolyte

Jiahui Yang; Chengxi Zhou; Yiquan Xiang; Yilong Bi; Xinyi Tan; Alex W. Robertson; Yuanfu Cheng; Zhenyu Sun

doi:10.1002/cssc.202500384

Research Progress and Prospect of All-Iron Redox Flow Battery Anolyte

Jiahui Yang
, Chengxi Zhou
, Yiquan Xiang
, Yilong Bi
, Xinyi Tan
, Alex W. Robertson
, Yuanfu Cheng
, Zhenyu Sun^*

^*Corresponding author for this work

Beijing University of Chemical Technology
Beijing Institute of Technology
University of Warwick

Research output: Contribution to journal › Review article › peer-review

8 Citations (Scopus)

Abstract

The all-iron redox flow battery (AIRFB) has garnered significant attention in the field of energy storage due to its advantages of cost, aqueous chemistry, safety, and sustainability. The traditional deposited AIRFB has a limited depth of discharge and is prone to metal dendrite growth and hydrogen evolution side reactions during operation. In contrast, the all-soluble AIRFB, where the active substances are all fully soluble, offers flexible operation that is more conducive to industrial development of AIRFB. However, the all soluble AIRFB electrolyte still requires improvement of its solubility, long-term stability, reactivity, and electrode potential. This review introduces the concepts for modification of the AIRFB electrolyte and presents the main ideas and methods for electrolyte improvement, as well as the challenges faced and possible research directions for the future.

Original language	English
Article number	e202500384
Journal	ChemSusChem
Volume	18
Issue number	14
DOIs	https://doi.org/10.1002/cssc.202500384
Publication status	Published - 17 Jul 2025
Externally published	Yes

Keywords

AIRFB
anolyte
energy storage system
iron-based electrolyte
redox flow batteries

Access to Document

10.1002/cssc.202500384

Cite this

@article{cc6c40b73ea54066b69596d142a4634a,

title = "Research Progress and Prospect of All-Iron Redox Flow Battery Anolyte",

abstract = "The all-iron redox flow battery (AIRFB) has garnered significant attention in the field of energy storage due to its advantages of cost, aqueous chemistry, safety, and sustainability. The traditional deposited AIRFB has a limited depth of discharge and is prone to metal dendrite growth and hydrogen evolution side reactions during operation. In contrast, the all-soluble AIRFB, where the active substances are all fully soluble, offers flexible operation that is more conducive to industrial development of AIRFB. However, the all soluble AIRFB electrolyte still requires improvement of its solubility, long-term stability, reactivity, and electrode potential. This review introduces the concepts for modification of the AIRFB electrolyte and presents the main ideas and methods for electrolyte improvement, as well as the challenges faced and possible research directions for the future.",

keywords = "AIRFB, anolyte, energy storage system, iron-based electrolyte, redox flow batteries",

author = "Jiahui Yang and Chengxi Zhou and Yiquan Xiang and Yilong Bi and Xinyi Tan and Robertson, \{Alex W.\} and Yuanfu Cheng and Zhenyu Sun",

note = "Publisher Copyright: {\textcopyright} 2025 Wiley-VCH GmbH.",

year = "2025",

month = jul,

day = "17",

doi = "10.1002/cssc.202500384",

language = "English",

volume = "18",

journal = "ChemSusChem",

issn = "1864-5631",

publisher = "Wiley-VCH Verlag",

number = "14",

}

TY - JOUR

T1 - Research Progress and Prospect of All-Iron Redox Flow Battery Anolyte

AU - Yang, Jiahui

AU - Zhou, Chengxi

AU - Xiang, Yiquan

AU - Bi, Yilong

AU - Tan, Xinyi

AU - Robertson, Alex W.

AU - Cheng, Yuanfu

AU - Sun, Zhenyu

PY - 2025/7/17

Y1 - 2025/7/17

N2 - The all-iron redox flow battery (AIRFB) has garnered significant attention in the field of energy storage due to its advantages of cost, aqueous chemistry, safety, and sustainability. The traditional deposited AIRFB has a limited depth of discharge and is prone to metal dendrite growth and hydrogen evolution side reactions during operation. In contrast, the all-soluble AIRFB, where the active substances are all fully soluble, offers flexible operation that is more conducive to industrial development of AIRFB. However, the all soluble AIRFB electrolyte still requires improvement of its solubility, long-term stability, reactivity, and electrode potential. This review introduces the concepts for modification of the AIRFB electrolyte and presents the main ideas and methods for electrolyte improvement, as well as the challenges faced and possible research directions for the future.

AB - The all-iron redox flow battery (AIRFB) has garnered significant attention in the field of energy storage due to its advantages of cost, aqueous chemistry, safety, and sustainability. The traditional deposited AIRFB has a limited depth of discharge and is prone to metal dendrite growth and hydrogen evolution side reactions during operation. In contrast, the all-soluble AIRFB, where the active substances are all fully soluble, offers flexible operation that is more conducive to industrial development of AIRFB. However, the all soluble AIRFB electrolyte still requires improvement of its solubility, long-term stability, reactivity, and electrode potential. This review introduces the concepts for modification of the AIRFB electrolyte and presents the main ideas and methods for electrolyte improvement, as well as the challenges faced and possible research directions for the future.

KW - AIRFB

KW - anolyte

KW - energy storage system

KW - iron-based electrolyte

KW - redox flow batteries

UR - https://www.scopus.com/pages/publications/105005571791

U2 - 10.1002/cssc.202500384

DO - 10.1002/cssc.202500384

M3 - Review article

AN - SCOPUS:105005571791

SN - 1864-5631

VL - 18

JO - ChemSusChem

JF - ChemSusChem

IS - 14

M1 - e202500384

ER -

Research Progress and Prospect of All-Iron Redox Flow Battery Anolyte

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this