Study of the long-term operation of a vanadium/oxygen fuel cell

Noack, Jens; Cognard, Gwenn; Oral, Meryem; Küttinger, Michael; Roznyatovskaya, Nataliya; Pinkwart, Karsten; Tübke, Jens

doi:10.1016/j.jpowsour.2016.06.121

Cited by 17 publications

(8 citation statements)

References 17 publications

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“…Thus, crossover-minimizing membranes and highly active electrocatalysts are needed to be collectively developed, which will be discussed in detail in the following section. To decrease the migration of divalent vanadium from a view of the cell structure design, a VOFC system with two membranes and a geometrically active area of 51 cm 2 was built, [50] which could be discontinuously operated over a long period of 676 h with 47 successive cyclic tests at room temperature. As a typical major step forward in integrating the VAFBs, a 5-cell VAFB system assembly was proposed and fabricated by using bipolar electrode configurations.…”

Section: Cell Configurationmentioning

confidence: 99%

Metal–Air Batteries: From Static to Flow System

Han

White

et al. 2018

Advanced Energy Materials

181

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As an emerging battery technology, metal-air flow batteries inherit the advantageous features of the unique structural design of conventional redox flow batteries and the high energy density of metal-air batteries, thus showing great potential as efficient electrochemical systems for large-scale electrical energy storage. This review summarizes the operating principles and recent progress of metal-air flow batteries from a materials and chemistry perspective, with particular emphasis on the latest advanced materials design and cell configuration engineering, which the authors divide into three categories based on the anode

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Section: Cell Configurationmentioning

confidence: 99%

Metal–Air Batteries: From Static to Flow System

Han

White

et al. 2018

Advanced Energy Materials

181

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“…Typically, there is not only one factor in the degeneration of the RFB but the confluence of several, as it is pointed out in the literature [38], in which it is stated that overlaid changes in the cathode's TPB (triple phase boundary) and in the special conditions between the two electrodes and membranes are the key responsible of the ageing. As the ageing in real conditions would take several months of operation and we only aimed to observe how the green energy powering can affect the performance of RFB, in the design of the tests we decided to use a membrane with a low performance in order to simulate this ageing, whose choice was based on previous studies carried out in our laboratories.…”

Section: Introductionmentioning

confidence: 99%

Performance of a vanadium redox flow battery for the storage of electricity produced in photovoltaic solar panels

et al. 2017

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An assessment of a bench-scale vanadium redox flow battery (VRFB) undergoing an accelerated ageing has been carried out under two operation modes: a galvanostaticcharging mode, where a constant current density was always applied, and solar-panel charging mode, where different current densities were applied according to the solar radiation profiles obtained during three consecutive days in Winter, in Ciudad Real, a town in the center of Spain. The accumulated and delivered charge capacities and the

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“…The description of the fabrication can be found in the next section. The performance of different VOFCs was measured at different temperatures by recording the OCV for 2 min following an application of different current densities (polarisation curve) for 5 min and calculating the mean cell voltage, power density and area specific resistance under load for comparison [34]. Full discharge tests were carried out for 2 M and 3.6 M Vanadium solutions and the energy density values calculated.…”

Section: Vofc Performance Measurementmentioning

confidence: 99%

Vanadium Oxygen Fuel Cell Utilising High Concentration Electrolyte

et al. 2019

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A vanadium oxygen fuel cell is a modified form of a conventional vanadium redox flow battery (VRFB) where the positive electrolyte (VO2+/VO2+ couple) is replaced by the oxygen reduction (ORR) process. This potentially allows for a significant improvement in energy density and has the added benefit of overcoming the solubility limits of V (V) at elevated temperatures, while also allowing the vanadium negative electrolyte concentration to increase above 3 M. In this paper, a vanadium oxygen fuel cell with vanadium electrolytes with a concentration of up to 3.6 M is reported with preliminary results presented for different electrodes over a range of current densities. Using precipitation inhibitors, the concentration of vanadium can be increased considerably above the commonly used 2 M limit, leading to improved energy density.

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Study of the long-term operation of a vanadium/oxygen fuel cell

Cited by 17 publications

References 17 publications

Metal–Air Batteries: From Static to Flow System

Metal–Air Batteries: From Static to Flow System

Performance of a vanadium redox flow battery for the storage of electricity produced in photovoltaic solar panels

Vanadium Oxygen Fuel Cell Utilising High Concentration Electrolyte

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