A mixed acid based vanadium–cerium redox flow battery with a zero-gap serpentine architecture

Leung, Puiki; Mohamed, Mohd Rusllim; Shah, Akeel A.; Xu, Qian; Conde-Duran, M. B.

doi:10.1016/j.jpowsour.2014.10.034

Cited by 79 publications

(40 citation statements)

References 39 publications

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“…The V-Ce system has been demonstrated with a zero-gap architecture and serpentine flow fields [212], where the MSAbased electrolytes allowed to use higher concentration of cerium. A V-Ce RFB could, in principle, be applied to hydrogen production by chemically discharging the vanadium electrolyte with a Mo2C catalyst [204].…”

Section: The V-ce Rfbmentioning

confidence: 99%

Electrochemical redox processes involving soluble cerium species

Arenas

León

Walsh

2016

Electrochimica Acta

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Anodic oxidation of cerous ions and cathodic reduction of ceric ions, in aqueous acidic solutions, play an important role in electrochemical processes at laboratory and industrial scale. Ceric ions, which have been used for oxidation of organic wastes and off-gases in environmental treatment, are a wellestablished oxidant for indirect organic synthesis and specialised cleaning processes, including oxide film removal from tanks and process pipework in nuclear decontamination. They also provide a classical reagent for chemical analysis in the laboratory. The reversible oxidation of cerous ions is an important reaction in the positive compartment of various redox flow batteries during charge and discharge cycling. A knowledge of the thermodynamics and kinetics of the redox reaction is critical to an understanding of the role of cerium redox species in these applications. Suitable choices of electrode material (metal or ceramic; coated or uncoated), geometry/structure (2-or 3-dimensional) and electrolyte flow conditions (hence an acceptable mass transport rate) are critical to achieving effective electrocatalysis, a high performance and a long lifetime. This review considers the electrochemistry of soluble cerium species and their diverse uses in electrochemical technology, especially for redox flow batteries and mediated electrochemical oxidation.

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Section: The V-ce Rfbmentioning

confidence: 99%

Electrochemical redox processes involving soluble cerium species

Arenas

León

Walsh

2016

Electrochimica Acta

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“…Cerium is the most abundant member of the lanthanide chemical series, and is used in many applications including in automotive catalytic converters, in flow battery designs, as a polishing media, and as a potential phosphor in light emitting diodes . Cerium‐based thin‐film materials as well as nanoparticles have been explored for applications in sensing, biomedicine, agriculture, and nutrient recovery .…”

Section: Introductionmentioning

confidence: 99%

Characterization of cerium (III) ion binding to surface‐immobilized EF‐hand loop I of calmodulin

Renner

2019

Peptide Science

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Cerium has a wide range of current and emerging applications, and the binding of cerium ions to solid substrates is important for cerium recovery, or in advanced material synthesis. In this study, we investigate the affinity of a surface‐bound peptide derived from the EF‐hand loop I of calmodulin for cerium (III) ions and compare the results to a scrambled control. Results obtained via quartz crystal microbalance with dissipation are used to estimate the dissociation constant between the bound EF‐hand loop I peptide and cerium (III) ions (1.3 ± 0.1 μM), which is comparable with other dissociation constants measured for EF‐hand peptides and cerium ions in solution reported this work and in literature (0.95‐5.8 μM). Circular dichroism also suggests that the peptide binds to cerium (III) ions in solution, and undergoes a secondary structural change upon binding. Overall, this study shows that EF‐hand loop peptides are capable of binding cerium (III) ions in solution and when attached to a solid substrate.

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“…In previous work [12], we have shown the contribution of thermodynamic, kinetic and ohmic components to the cell potential losses in the Zn-Ce RFB, evaluating the effect of electrolyte conductivity and interelectrode gap. Other cerium-based RFBs have been proposed, including: a Ce-Ce concentration cell [13], an undivided Zn-Ce RFB [7,14], a V-Ce RFB [15][16][17][18][19], a borohydride-Ce fuel cell [20], a Pb-Ce RFB [21] and a H 2 -Ce fuel cell [22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Mass transport and active area of porous Pt/Ti electrodes for the Zn-Ce redox flow battery determined from limiting current measurements

Arenas

León

Walsh

2016

Electrochimica Acta

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The conversion of soluble cerium redox species in the zinc-cerium redox flow battery and other electrochemical processes can be carried out at planar and porous platinised titanium electrodes.The active area, current density, mass transfer coefficient and linear electrolyte flow velocity through these structures have a direct influence on the reaction yield and the relationship between cell potential and operational current density during charge and discharge of a flow battery. A quantitative and practical characterization of the reaction environment at these electrodes is required. The volumetric mass transfer coefficient, " $ has been calculated from limiting current measurements for Ce(IV) ion reduction in a laboratory, rectangular channel flow cell. This factor can be used to predict fractional conversion and required electrode dimensions. Highly porous platinised titanium felt shows superior " $ values and is wellsuited as a high performance electrode material.

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A mixed acid based vanadium–cerium redox flow battery with a zero-gap serpentine architecture

Cited by 79 publications

References 39 publications

Electrochemical redox processes involving soluble cerium species

Electrochemical redox processes involving soluble cerium species

Characterization of cerium (III) ion binding to surface‐immobilized EF‐hand loop I of calmodulin

Mass transport and active area of porous Pt/Ti electrodes for the Zn-Ce redox flow battery determined from limiting current measurements

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