Tunable surface chemistry of carbon electrodes and the role of surface functionalities towards vanadium redox reactions

Abbas, Saleem; Mehboob, Sheeraz; Shin, Hyun-Jin; Rizvi, Syed Bilal Hasan; Kim, Jaewon; Henkensmeier, Dirk; Ha, Heung Yong

doi:10.1016/j.apsusc.2023.157331

Cited by 7 publications

(2 citation statements)

References 48 publications

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“…For instance, research on microbial consortia and biofilm growth has been conducted [192]. Extensive research has also been performed regarding membrane design [193,194], as well as research on electron transfer mechanisms [153,154]. Moreover, the fundamental principles of the design and operation of microbial fuel cells rely on established theoretical foundations applicable to closely related disciplines, such as colloidal systems, where the electric double layer theory is central to the analysis of colloidal stability.…”

Section: Discussionmentioning

confidence: 99%

“…In such systems, carbon-based materials have been employed as the most preferred anode material [152] due to the corrosion potential of traditional metal-based anodes [153]. Various analytical techniques involving electrochemical characterizations and infrared spectroscopy reveal that the surfaces of carbon-based materials have C=O, OH, and O-C=O functional groups [154]. In contact with a substrate/fuel-loaded wastewater/aqueous media, a surface charge develops on such anodes due to the ionization of the functional groups.…”

Section: Relationship With Mfc Performancementioning

confidence: 99%

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Interrelationship of Electric Double Layer Theory and Microfluidic Microbial Fuel Cells: A Review of Theoretical Foundations and Implications for Performance

Amadu,

Miadonye

2024

Energies

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Microbial fuel cells and their related microfluidic systems have emerged as promising greener energy alternatives for the exploitation of avenues related to combined power and wastewater treatment operations. Moreover, the potential for their application in biosensing technology is large. However, while the fundamental principles of science that govern the design and operation of microbial fuel cells (MFCs) and microfluidic microbial fuel cells (MMFCs) are similar to those found in colloid science, the literature shows that current research lacks sufficient reference to the electrostatic and electrokinetic aspects, focusing mostly on aspects related to the architecture, design, anodes, microbial growth and metabolism, and electron transfer mechanisms. In this regard, research is yet to consider MFCs and MMFCs in the context of electrostatic and electrokinetic aspects. In this extensive review, we show, for the first time, the interrelationship of MFCs and MMFCs with electric double layer theory. Consequently, we show how the analytical solution to the mean field Poisson–Boltzmann theory relates to these systems. Moreover, we show the interrelationship between MFC and MMFCs’ performance and the electric double layer and the associated electrostatic and electrokinetic phenomena. This extensive review will likely motivate research in this direction.

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Section: Discussionmentioning

confidence: 99%

Section: Relationship With Mfc Performancementioning

confidence: 99%

Interrelationship of Electric Double Layer Theory and Microfluidic Microbial Fuel Cells: A Review of Theoretical Foundations and Implications for Performance

Amadu,

Miadonye

2024

Energies

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Sulfonated para‐Polybenzimidazole Membranes for Use in Vanadium Redox Flow Batteries

Bui,

Shin,

Abbas

et al. 2024

Advanced Energy Materials

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Ion conducting membranes play a crucial role in redox flow batteries, separating anolyte and catholyte while allowing proton transport to complete the circuit. However, most membranes are trapped in a trade‐off relation and show either low conductivity or high vanadium crossover. This study investigates the use of dense sulfonated para‐polybenzimidazole membranes for vanadium redox flow batteries (VRFBs), and analyzes the effects of membrane preparation process, membrane thickness and operating temperature on the VRFB performance. The results demonstrate superior performance of VRFBs utilizing fluorine‐free sulfonated para‐polybenzimidazole membranes compared to other types. Under optimal conditions, the VRFB exhibits high coulombic efficiency (>99%) and high energy efficiency (EE, 92.2% at a current density of 80 mA cm−2), and durability. The achieved EE represents one of the highest reported in the literature for VRFBs. In addition, it is shown that operation at 35 °C has benefits at high current densities (EE at 300 mA cm−2 is over 80% at 35 °C but 72% at 25 °C), while the operation at 80 mA cm−2 only shows a small temperature effect (91.8 and 92.2%, respectively).

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High‐performance Porous Electrodes for Flow Batteries: Improvements of Specific Surface Areas and Reaction Kinetics

Pan,

Guo,

et al. 2024

ChemElectroChem

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Electrodes, which offer sites for mass transfer and redox reactions, play a crucial role in determining the energy efficiencies and power densities of redox flow batteries. This review focuses on various approaches to enhancing electrode performance, particularly the methods of surface etching and catalyst deposition, as well as some other advanced strategies for regulating electrode surface properties. These approaches aim to increase active sites and enhance kinetics for the redox reactions, which are crucial for elevating power density and electrolyte utilization, eventually determining the performance of the flow battery. Highlighting the need for interdisciplinary research, this mini‐review suggests that future advancements in electrode design will significantly impact the commercial viability and adoption of redox flow batteries in sustainable energy storage solutions.

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Tunable surface chemistry of carbon electrodes and the role of surface functionalities towards vanadium redox reactions

Cited by 7 publications

References 48 publications

Interrelationship of Electric Double Layer Theory and Microfluidic Microbial Fuel Cells: A Review of Theoretical Foundations and Implications for Performance

Interrelationship of Electric Double Layer Theory and Microfluidic Microbial Fuel Cells: A Review of Theoretical Foundations and Implications for Performance

Sulfonated para‐Polybenzimidazole Membranes for Use in Vanadium Redox Flow Batteries

High‐performance Porous Electrodes for Flow Batteries: Improvements of Specific Surface Areas and Reaction Kinetics

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