Temperature dependence of kinetics and diffusion coefficients for ferrocene/ferricenium in ammonium-imide ionic liquids

Matsumiya, Masahiko; Terazono, Misato; Tokuraku, Kiyotaka

doi:10.1016/j.electacta.2005.06.006

Cited by 68 publications

(74 citation statements)

References 20 publications

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“…For the V(II)/V(III) redox reaction at 25°C, an anodic peak and a cathodic peak occurred at À0.373 V and À0.794 V, respectively, which are consistent with the data reported the literature [20]. It can be seen from Table 1 that with increasing temperature, the peak potential separation (DE) of the V(II)/V(III) redox couple shows an obvious decrease, indicating that the redox reaction exhibits a better reversibility at elevated temperatures.…”

Section: Cyclic Voltammetrysupporting

confidence: 93%

Effects of operating temperature on the performance of vanadium redox flow batteries

et al. 2015

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Section: Cyclic Voltammetrysupporting

confidence: 93%

Effects of operating temperature on the performance of vanadium redox flow batteries

et al. 2015

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“…In all cases a good linear tendency has been observed. Calculated ferrocene (Fc) diffusion coefficients ( [27]. A diffusion coefficient of 3 Â 10 À8 cm 2 s À1 for ferrocene in 1-butyl-3-methylimidazolium hexafluorophosphate was deduced from cyclic voltammetry fitting, assuming a heterogenous charge-transfer rate constant k ¼ 0.0025 cm s À1 and electron transfer coefficient of 0.5 [20].…”

Section: Diffusionmentioning

confidence: 99%

Ferrocene as a Reference Redox Couple for Aprotic Ionic Liquids

2009

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The electrochemical behavior of ferrocene has been studied in a number of room temperature ionic liquids. Diffusioncontrolled, well-defined anodic and cathodic peaks were found for the Fc/Fc þ (ferrocene/ferrocenium) oxidation/ reduction on the gold electrode. Ohmic resistance R between working and auxiliary electrodes was deduced from impedance measurements. Cyclic voltammograms were corrected for the base line current as well as for the ohmic drop (IR). The formal potential 1/2(E pa þ E pc ) for ferrocene reduction/oxidation in aprotic ionic liquids tested is within a relatively narrow range and may be approximated by the value of 0.527 AE 0.018 V (against the cryptate Ag/Ag þ 222 in acetonitrile reference). Ferrocene diffusion coefficients, calculated from the peak current dependence on the sweep rate, were of the order of 10 À7 cm 2 s À1.

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“…Changing the bath temperature affects the diffusion coefficient D, according to Arrhenius law. 50) The maximum current density increases with bath temperature. Furthermore, the minimum current density in the medium current density regime increases with bath temperature, 25) because the maximum current density i a for adsorption of hydrogen is also affected by bath temperature.…”

Section: Design Principles For Achieving High Ductilitymentioning

confidence: 99%

Strategy for Electrodeposition of Highly Ductile Bulk Nanocrystalline Metals with a Face-Centered Cubic Structure

et al. 2014

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A strategy for producing highly ductile electrodeposited bulk nanocrystalline metals with face-centered cubic structures was developed in a NiW alloy model system. Bulk nanocrystalline NiW alloys with similar grain size (2030 nm), and varying crystallographic orientations were produced. The electrodeposited alloys showed tensile elongation ranging between 0 and 13%. Scanning ion microscopy reveled that all electrodeposited alloys had similar meso-scale structures that are typical of electrodeposited metals. This indicated the variation of ductility and fracture surfaces was not caused by cluster structures filled with nano-grains. The tensile behavior of the bulk nanocrystalline NiW alloys could be explained by considering the effects of growth processes during electrodeposition on the presence of hydrogen and defects. Our discussion surrounding NiW alloys outlines the conditions necessary to obtain the high tensile ductility. Our findings are in good agreement with those for other electrodeposited nanocrystalline face-centered cubic metals. We also provide guidelines for selecting electrodeposition conditions to produce bulk nanocrystalline metals with face-centered cubic structures and high tensile ductility.

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Temperature dependence of kinetics and diffusion coefficients for ferrocene/ferricenium in ammonium-imide ionic liquids

Cited by 68 publications

References 20 publications

Effects of operating temperature on the performance of vanadium redox flow batteries

Effects of operating temperature on the performance of vanadium redox flow batteries

Ferrocene as a Reference Redox Couple for Aprotic Ionic Liquids

Strategy for Electrodeposition of Highly Ductile Bulk Nanocrystalline Metals with a Face-Centered Cubic Structure

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