Vanadium microfluidic fuel cell with novel multi-layer flow-through porous electrodes: Model, simulations and experiments

Li, Li; Nikiforidis, Georgios; Leung, Michael K.H.; Daoud, Walid A.

doi:10.1016/j.apenergy.2016.05.072

Cited by 51 publications

(25 citation statements)

References 77 publications

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“…An experimental approach to measure polarization curves combined with monitoring current density distributions has been described [133]. Microfluidic cells have been described [134,135] and porous carbon electrodes for this kind of cell have been examined [136]. Voltage step coulometry has been suggested as a method to characterize materials for VRFBs The three-electrode setup will provide information related to the electrode under study and to the steps of the electrode reaction proceeding there.…”

Section: Methodsmentioning

confidence: 99%

Electrocatalysis at Electrodes for Vanadium Redox Flow Batteries

Holze

2018

Batteries

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Flow batteries (also: redox batteries or redox flow batteries RFB) are briefly introduced as systems for conversion and storage of electrical energy into chemical energy and back. Their place in the wide range of systems and processes for energy conversion and storage is outlined. Acceleration of electrochemical charge transfer for vanadium-based redox systems desired for improved performance efficiency of these systems is reviewed in detail; relevant data pertaining to other redox systems are added when possibly meriting attention. An attempt is made to separate effects simply caused by enlarged electrochemically active surface area and true (specific) electrocatalytic activity. Because this requires proper definition of the experimental setup and careful examination of experimental results, electrochemical methods employed in the reviewed studies are described first.

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Section: Methodsmentioning

confidence: 99%

Electrocatalysis at Electrodes for Vanadium Redox Flow Batteries

Holze

2018

Batteries

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“…Finally, the application of mathematical modelling on vanadium-based microuidic cells provides an interesting discussion on the reaction phenomena at the porous electrode and electrolyte interface. 294 The model is dimensionless and is applied to ow-through porous carbon ber electrodes to explore different designs. 295 The working mechanisms of porous electrodes under different operational and geometric parameters were studied.…”

Section: Modelling For Vrfb and Similar Aqueous-based Systemsmentioning

confidence: 99%

Modelling of redox flow battery electrode processes at a range of length scales: a review

Chakrabarti

Kalamaras

Singh

et al. 2020

Sustainable Energy Fuels

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“…Stock electrolyte (50/50, V 2+ /V 3+ ) in 4-M sulfuric acid solution was recharged to produce V 2+ and VO þ 2 as the anolyte and catholyte, respectively. This pioneer work is chosen for the model validation as it has established a both experimentally and computationally well-defined system of vanadium redox MFC with porous electrodes in conjunction with a series of studies [30][31][32][33][34][35][36] . Consequently, the parameter values needed in the simulation can be derived from previous literatures 29,30,32,35 .…”

Section: Model Validationmentioning

confidence: 99%

Design of a radial vanadium redox microfluidic fuel cell: A new way to break the size limitation

Bei

Liu

et al. 2019

Int J Energy Res

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Summary Microfluidic fuel cell (MFC) suffers from small single cell output power due to the inherent cell size limitation as microscale geometries are prerequisite to prevent reactant crossover between the anode and cathode. To meet the power demand of practical applications, previous works mainly focus on the creating of MFC stacks with multiple cells connected in series, parallel, or mixture of both series and parallel to increase the output power. Yet, low energy efficiency is observed because of the flow distribution nonuniformity and shunt current losses. In this work, a high performance radial vanadium redox MFC is presented to address the size limitation issue by adding a separate layer between the porous electrodes of the conventional plate‐frame MFC. Specific cell characteristics are detailed by mathematical modeling, and parametric studies are performed to evaluate the influences of the geometrical and operational parameters on the cell performance. The results show that this new radial MFC can provide a higher fuel utilization and meanwhile an improved cell performance under a fixed electrode size compared with the conventional plate‐frame MFC. Moreover, the electrode size limitation due to the reactant crossover between the anode and cathode is broken as the influences of the electrode size on the mixing region are greatly reduced. In the case with the electrode size equal to 18 mm × 18 mm, single cell output power of 0.35 mW with a fuel utilization of 53.33% is obtained under the reactant concentration of 2 mol L−1 and flow rate of 300 μL min−1.

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Vanadium microfluidic fuel cell with novel multi-layer flow-through porous electrodes: Model, simulations and experiments

Cited by 51 publications

References 77 publications

Electrocatalysis at Electrodes for Vanadium Redox Flow Batteries

Electrocatalysis at Electrodes for Vanadium Redox Flow Batteries

Modelling of redox flow battery electrode processes at a range of length scales: a review

Design of a radial vanadium redox microfluidic fuel cell: A new way to break the size limitation

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