Asymmetric Marcus–Hush theory for voltammetry

Laborda, Eduardo; Henstridge, Martin C.; Batchelor‐McAuley, Christopher; Compton, Richard G.

doi:10.1039/c3cs35487c

Cited by 119 publications

(116 citation statements)

References 49 publications

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“…This may not hold as a general rule given the different charge of the reduced and oxidised species, and various theoretical approaches have been considered to overcome this limitation of the sMH formalism. Among them, the use of the asymmetric version of the Marcus theory has been recently applied to heterogeneous electron transfer processes by Compton et al …”

Section: Section 2: Challenging Butler–volmer Theorymentioning

confidence: 99%

Recent Advances in Voltammetry

et al. 2015

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Recent progress in the theory and practice of voltammetry is surveyed and evaluated. The transformation over the last decade of the level of modelling and simulation of experiments has realised major advances such that electrochemical techniques can be fully developed and applied to real chemical problems of distinct complexity. This review focuses on the topic areas of: multistep electrochemical processes, voltammetry in ionic liquids, the development and interpretation of theories of electron transfer (Butler–Volmer and Marcus–Hush), advances in voltammetric pulse techniques, stochastic random walk models of diffusion, the influence of migration under conditions of low support, voltammetry at rough and porous electrodes, and nanoparticle electrochemistry. The review of the latter field encompasses both the study of nanoparticle-modified electrodes, including stripping voltammetry and the new technique of ‘nano-impacts’.

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Section: Section 2: Challenging Butler–volmer Theorymentioning

confidence: 99%

Recent Advances in Voltammetry

et al. 2015

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“…[44] Given that the porous granules were added at the beginning of tests, the first few data points were very likely influenced by the wetting process that changes the effective contact surface area. It should be noted that the above analysis is restricted to the situation where interfacial charge transfer is the rate limiting step and E E RM O NVP O − is small.…”

Section: Resultsmentioning

confidence: 99%

Na₃V₂(PO₄)₃ as the Sole Solid Energy Storage Material for Redox Flow Sodium‐Ion Battery

Zhou

Chen

Zhang

et al. 2019

Advanced Energy Materials

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like wind and solar for electricity generation. The growth will go on accelerating to replace the fossil fuels in the future. [1] At the same time, the intermittent nature of these power sources necessitates a durable and cost-effective energy storage system to meet the huge demands for peak shifting and power buffering for GWscale systems. Considering the scalability, operation safety, and flexibility, redox flow battery (RFB) is regarded as one of the most promising electrochemical energy storage technologies which have found their own niche for the large-scale energy storage applications. [2] Unlike other rivals such as lithium ion battery and leadacid battery, RFB stores energy in mobilized electrolyte solutions other than in solid active materials coated on electrode sheets. The design that the redox active compounds circulate between the storage reservoir and cell stack with the aid of pumps, enables decoupled energy storage and power generation.However, the conventional redox flow batteries severely suffer from low energy density (<40 Wh L −1 ) as a result of limited solubility of redox species and low cell voltage, which adds on the footprint and capital cost of the system, impeding its practical deployment. [3] To improve the energy density, various aprotic RFBs have been explored for enhanced cell voltage. [4,5] However, because of the low solubility of aprotic solvents to many redox active compounds, [6] the reported high energy aprotic RFBs are limited to a few systems such as polyiodide, [7] redox-active ionic liquids, [8,9] deep eutectics, [10] and hybrid electrolyte. [11,12] Through molecular engineering, metallocene such as ferrocene derivatives [13,14] and redox-active organic materials [15][16][17][18][19] such as 2,2,6,6-tetramethylpiperidin-1-oxyl derivatives [17] and benzothiadiazole [16] have recently been reported to have good solubility and potentially high energy density. Although the solubility can reach up to 5 m in pure solvent, taking the supporting salts and electrolyte viscosity into consideration, the practical concentration of those molecules remains limited to <2 m.[2] By forming slurry of solid active materials with conducting carbon additives, semisolid flow cells that utilize solid suspensions represent an alternative way to increase the effective concentration. [20] Although the energy density can in theory be increased considerably, these cells may have critical issues on fluid conductivities and Redox flow batteries have considerable advantages of system scalability and operation flexibility over other battery technologies, which makes them promising for large-scale energy storage application. However, they suffer from low energy density and consequently relatively high cost for a nominal energy output. Redox targeting-based flow batteries are employed by incorporating solid energy storage materials in the tank and present energy density far beyond the solubility limit of the electrolytes. The success of this concept relies on paring suitable redox mediators with solid mate...

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“…[34][35][36] The charge transport (CT) rate constant, k CT , can be evaluated by the following eqn (2): The charge transport rate can be calculated using the Marcus-Hush theory.…”

Section: Introductionmentioning

confidence: 99%

Effect of high pressure on the crystal structure and charge transport properties of the (2-fluoro-3-pyridyl)(4-iodophenyl)borinic 8-oxyquinolinate complex

et al. 2014

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The crystal and molecular structure of Ĳ2-fluoro-3-pyridyl)Ĳ4-iodophenyl)borinic 8-oxyquinolinate has been determined at room temperature at pressures ranging from ambient to 4.9 GPa in approximately 1 GPa steps. The crystal structure symmetry is conserved during the compression while the a, b and c unit cell dimensions were compressed by 7.5%, 8.0% and 6.9%, respectively. The crystal cell volume decreased by 19.4%. The analysis of the compression of the crystal was supported by computational results obtained with the PASCAL code. They proved that the crystal compression proceeds almost isotropically. A combination of Hirshfeld surface analysis and PIXEL calculations indicated the formation of multiple new contacts involving fluorine⋯fluorine and iodine⋯π-density. Energies of interactions calculated for the observed motifs present in the crystal were rationalized on the basis of contacts observed for these motifs. Further analysis based on the Marcus model was performed to trace the possible changes in the charge transport properties of the crystal. The analysis showed that electron and hole transport properties are not affected in the same way by the compression. However, hydrostatic pressure did not affect which charge transport (electron or hole) is the dominant one for this material.

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Asymmetric Marcus–Hush theory for voltammetry

Cited by 119 publications

References 49 publications

Recent Advances in Voltammetry

Recent Advances in Voltammetry

Na₃V₂(PO₄)₃ as the Sole Solid Energy Storage Material for Redox Flow Sodium‐Ion Battery

Effect of high pressure on the crystal structure and charge transport properties of the (2-fluoro-3-pyridyl)(4-iodophenyl)borinic 8-oxyquinolinate complex

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Asymmetric Marcus–Hush theory for voltammetry

Cited by 119 publications

References 49 publications

Recent Advances in Voltammetry

Recent Advances in Voltammetry

Na3V2(PO4)3 as the Sole Solid Energy Storage Material for Redox Flow Sodium‐Ion Battery

Effect of high pressure on the crystal structure and charge transport properties of the (2-fluoro-3-pyridyl)(4-iodophenyl)borinic 8-oxyquinolinate complex

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Na₃V₂(PO₄)₃ as the Sole Solid Energy Storage Material for Redox Flow Sodium‐Ion Battery