Impedance spectroscopy data for anions electroreduction kinetics at Cd(0001) plane electrode

Thomberg, Thomas; Nerut, Jaak; Lust, Enn

doi:10.1016/j.jelechem.2005.10.001

Cited by 17 publications

(14 citation statements)

References 30 publications

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“…The series specific capacitance (C s ) values have been calculated from Nyquist plots, measured at fixed E after 5th CV cycle (C s = (Z(Im)i2πf) −1 , where i = √ -1 and Z(Im) is the imaginary part of the impedance). [5][6][7]25,26,32 C s does not depend much on E at high and moderate frequencies f ≥ 100 Hz (Fig. 9a).…”

Section: Resultsmentioning

confidence: 89%

A Type High Capacitance Supercapacitor Based on Mixed Room Temperature Ionic Liquids Containing Specifically Adsorbed Iodide Anions

Tooming

Thomberg

Siinor

et al. 2013

J. Electrochem. Soc.

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The influence of addition (5 wt%) of 1-ethyl-3-methylimidazolium iodide (EMImI) in 1-ethyl-3-methylimidazolium tetrafluoroborate (EMImBF 4 ) on the melting point, bulk conductivity and electrochemical properties of the room temperature ionic liquid (RTIL) mixture as an electrolyte in electrical double layer capacitor (EDLC) has been studied using cyclic voltammetry, electrochemical impedance spectroscopy, constant current charge-discharge and constant power discharge methods. Electrodes were prepared of the D-glucose derived activated carbon powder, which was prepared by hydrothermal carbonization method followed by additional pyrolysis and carbon dioxide activation steps. The specific conductivity reduced from 13.6 mS cm −1 to 12.8 mS cm −1 and the melting point increased from 17 • C to 19.5 • C by adding 5 wt% of EMImI into EMImBF 4 . However, noticeable increase in specific capacitance (245 F g −1 at 1.0 V), specific energy (36.7 Wh kg −1 ) and specific power and minor increase in characteristic relaxation time constant (from 1.45 s to 1.48 s) values has been established for EDLCs using the mixture of RTIL as an electrolyte. The EDLC based on EMImBF 4 + 5 wt% EMImI demonstrated nearly 50% higher stored charge values than EDLCs without EMImI addition.

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Section: Resultsmentioning

confidence: 89%

A Type High Capacitance Supercapacitor Based on Mixed Room Temperature Ionic Liquids Containing Specifically Adsorbed Iodide Anions

Tooming

Thomberg

Siinor

et al. 2013

J. Electrochem. Soc.

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“…Other electrode materials.-The electroreduction of peroxodisulfate has also been investigated using other electrode materials: leadand thallium-adsorbed silver (Ag), 79 Cd-adsorbed platinized Pt, 70 riboflavin/graphene quantum dots-modified glassy carbon, 80 ruthenium oxide/thionine-and ruthenium oxide/celestine blue-modified glassy carbon, 81 mercury, [82][83][84] Cd, [85][86][87] bismuth, 86 Prussian blue, 88 and BDD. 89 However, none of these materials exhibit diffusion-controlled currents.…”

Section: Electrochemical Behavior Of Peroxodisulfatementioning

confidence: 99%

Review—Electroreduction of Peroxodisulfate: A Review of a Complicated Reaction

Shafiee

Aarons

Hamzah

2018

J. Electrochem. Soc.

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The electroreduction of peroxodisulfate has been studied on various electrode materials for decades. However, the reduction of peroxodisulfate is not fully understood to date. Many research groups have searched for an electrode material that exhibits a diffusion-controlled response in the electroreduction of peroxodisulfate. However, the voltammetric responses obtained on most electrode materials have shown a kinetically-controlled reaction. Reaction mechanisms of peroxodisulfate reduction have also been proposed by a few groups. This review paper focuses on the electrochemical responses for the reduction of peroxodisulfate obtained on platinum, gold, platinized platinum, and bismuth-adsorbed platinum electrodes. This paper will not review the polarograms obtained on mercury drop electrodes for the reduction of peroxodisulfate anions because we believe that the results do not contribute to the understanding of the electrochemical reactions. We propose a simplified version of the reaction mechanisms. This paper also reviews the kinetic models proposed by several groups which could assist the readers to apprehend the kinetic behaviors of peroxodisulfate reduction. This paper discusses several issues related to peroxodisulfate from the natural decomposition of peroxodisulfate to the reaction mechanisms of peroxodisulfate reduction.

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“…First, in the absence of nickel particles, the electrodes essentially follow the Randles equivalent circuit, except that the capacitor of the electric double layer (C dl ) deviated from a pure capacitor because of the roughness of the electrode and so is replaced by a CPE (Fig. 9a) [28][29][30][31][32]. Second, in the presence of nickel films, the structure of the electrode interface is altered leading to different models (circuits b and c).…”

Section: Comparative Electron Transport Propertiesmentioning

confidence: 99%

“…Second, in the presence of nickel films, the structure of the electrode interface is altered leading to different models (circuits b and c). Several literature reports [28][29][30][31][32], associate parallel connection of R ct with impedance as some electrode processes involving electrochemically adsorbed products, thus the R ct here may be associated with adsorption or partial charge transfer resistance of the nickel and nickel oxide films. Also, equivalent circuits (b) and (c) exhibit good resemblance to the circuit of the so-called "electrolyte-insulator-semiconductor (EIS)" sensors [33].…”

Section: Comparative Electron Transport Propertiesmentioning

confidence: 99%

Electron transfer behaviour of single-walled carbon nanotubes electro-decorated with nickel and nickel oxide layers

Adekunle¹,

Ozoemena²

2008

Electrochimica Acta

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Impedance spectroscopy data for anions electroreduction kinetics at Cd(0001) plane electrode

Cited by 17 publications

References 30 publications

A Type High Capacitance Supercapacitor Based on Mixed Room Temperature Ionic Liquids Containing Specifically Adsorbed Iodide Anions

A Type High Capacitance Supercapacitor Based on Mixed Room Temperature Ionic Liquids Containing Specifically Adsorbed Iodide Anions

Review—Electroreduction of Peroxodisulfate: A Review of a Complicated Reaction

Electron transfer behaviour of single-walled carbon nanotubes electro-decorated with nickel and nickel oxide layers

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