Volume 24, Issue 1 e202300284
Review

Recent Development of Electrolytes for Aqueous Organic Redox Flow Batteries (Aorfbs): Current Status, Challenges, and Prospects

Dr. Muhammad Mansha

Dr. Muhammad Mansha

Interdisciplinary Research Center for Hydrogen and Energy Storage, King Fahd University of Petroleum and Minerals, Dhahran, 31261 Saudi Arabia

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Asif Ayub

Asif Ayub

Department of Chemistry, Islamia University Bahawalpur, 63100 Punjab, Pakistan

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Ibad Ali Khan

Ibad Ali Khan

Department of Materials Science and Engineering, College of Chemical Sciences, King Fahd University of Petroleum and Minerals, Dhahran, 31261 Saudi Arabia

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Dr. Shahid Ali

Dr. Shahid Ali

Interdisciplinary Research Center for Hydrogen and Energy Storage, King Fahd University of Petroleum and Minerals, Dhahran, 31261 Saudi Arabia

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Dr. Atif Saeed Alzahrani

Dr. Atif Saeed Alzahrani

Department of Materials Science and Engineering, College of Chemical Sciences, King Fahd University of Petroleum and Minerals, Dhahran, 31261 Saudi Arabia

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Dr. Majad Khan

Dr. Majad Khan

Interdisciplinary Research Center for Hydrogen and Energy Storage, King Fahd University of Petroleum and Minerals, Dhahran, 31261 Saudi Arabia

Department of Chemistry, College of Chemical Sciences, King Fahd University of Petroleum and Minerals, Dhahran, 31261 Saudi Arabia

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Dr. Muhammad Arshad

Dr. Muhammad Arshad

Department of Chemistry, Islamia University Bahawalpur, 63100 Punjab, Pakistan

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Dr. Abdul Rauf

Dr. Abdul Rauf

Department of Chemistry, Islamia University Bahawalpur, 63100 Punjab, Pakistan

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Dr. Safyan Akram Khan

Corresponding Author

Dr. Safyan Akram Khan

Interdisciplinary Research Center for Hydrogen and Energy Storage, King Fahd University of Petroleum and Minerals, Dhahran, 31261 Saudi Arabia

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First published: 27 November 2023
Citations: 1

Abstract

In recent years, aqueous organic redox flow batteries (AORFBs) have attracted considerable attention due to advancements in grid-level energy storage capacity research. These batteries offer remarkable benefits, including outstanding capacity retention, excellent cell performance, high energy density, and cost-effectiveness. The organic electrolytes in AORFBs exhibit adjustable redox potentials and tunable solubilities in water. Previously, various types of organic electrolytes, such as quinones, organometallic complexes, viologens, redox-active polymers, and organic salts, were extensively investigated for their electrochemical performance and stability. This study presents an overview of recently published novel organic electrolytes for AORFBs in acidic, alkaline, and neutral environments. Furthermore, it delves into the current status, challenges, and prospects of AORFBs, highlighting different strategies to overcome these challenges, with special emphasis placed on their design, composition, functionalities, and cost. A brief techno-economic analysis of various aqueous RFBs is also outlined, considering their potential scalability and integration with renewable energy systems.

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