Use of voltage for recomposing degraded redox active molecules for flow battery applications

Sahoo, Abhilipsa; Ramanujam, Kothandaraman

doi:10.1039/d3ta00624g

J. Mater. Chem. A

2023

DOI: 10.1039/d3ta00624g

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Use of voltage for recomposing degraded redox active molecules for flow battery applications

Abhilipsa Sahoo

Kothandaraman Ramanujam

Abstract: Building energy storage systems out of ubiquitous materials is the dream of researchers to lower the levelized costs of electricity storage to realize a sustainable energy economy. Organic redox-active molecules...

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2024

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Cited by 2 publications

References 31 publications

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Advances in Redox Flow Batteries – A Comprehensive Review on Inorganic and Organic Electrolytes and Engineering Perspectives

Shoaib,

Vallayil,

Jaiswal

et al. 2024

Advanced Energy Materials

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Development and application of large‐scale energy storage systems are surging due to the increasing proportion of intermittent renewable energy sources in the global energy mix. Redox flow batteries are prime candidates for large‐scale energy storage due to their modular design and scalability, flexible operation, and ability to decouple energy and power. To date, several different redox couples are exploited in redox‐flow batteries; some are already commercialized. This battery technology is facing a lot of challenges in the science, engineering, and economic front. Issues plaguing flow batteries are low energy density, high overall cost, poor stability of electrolytes, shifting of solvent from anolyte to catholyte while using cation exchange membrane, reverse flow with anion exchange membrane, and corrosion of graphite felt in the catholyte side. Significant research efforts are ongoing to address these challenges. This comprehensive and critical review summarizes the recent progress in electrolyte technologies, including electrochemical performance and stability, strategies to enhance the energy and power densities and, in the end, the levelized and life‐cycle cost of these batteries analyzed. A comprehensive outlook on this technology with respect to practical energy storage applications is also provided.

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Advances in Redox Flow Batteries – A Comprehensive Review on Inorganic and Organic Electrolytes and Engineering Perspectives

Shoaib,

Vallayil,

Jaiswal

et al. 2024

Advanced Energy Materials

View full text Add to dashboard Cite

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Alizarin Based Metal Organic Redox Flow Battery as an Efficient Storage Device for Renewable Energy Sources

Srinivasan M.,

S.,

Ragupathy

2024

J. Electrochem. Soc.

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Redox Flow Battery (RFB) technology is the most attractive energy storage system for storing renewable energy sources in the form of electrical energy that can be fed into power networks. However, there are many challenges associated with RFB technology in terms of cost, low energy density, and scarcity of active materials. To address these issues, herein we report an innovative Metal-Organic Redox Flow Battery (MORFB) technology involving manganese ions as catholyte and alizarin red S (ARS), an anthraquinone derivatives as anolyte. The newly designed Mn/ARS redox flow cell exhibits the open circuit voltage of 1.432 V vs Ag/AgCl and possessing excellent reversibility of redox couples. The Mn/ARS redox couple depicts a consistent galvanostatic charge-discharge profile over 100 extended cycles with a maximum capacity retention of 99.99% and no cross-over across the electrodes was observed. A significant rise in the coulombic efficiency is observed in relation to the current density and on further cycling the CE remains the same at 82%, VE of 54%, and EE of 43.2% at 40 mA cm-2 current density.

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Use of voltage for recomposing degraded redox active molecules for flow battery applications

Abstract: Building energy storage systems out of ubiquitous materials is the dream of researchers to lower the levelized costs of electricity storage to realize a sustainable energy economy. Organic redox-active molecules...

Cited by 2 publications

References 31 publications

Advances in Redox Flow Batteries – A Comprehensive Review on Inorganic and Organic Electrolytes and Engineering Perspectives

Advances in Redox Flow Batteries – A Comprehensive Review on Inorganic and Organic Electrolytes and Engineering Perspectives

Alizarin Based Metal Organic Redox Flow Battery as an Efficient Storage Device for Renewable Energy Sources

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