Influence of the nature of the electrode material and process variables on the kinetics of the chlorine evolution reaction. The case of IrO2-based electrocatalysts

Rosestolato, Davide; Fregoni, Jacopo; Ferro, Sergio; Battisti, Achille De

doi:10.1016/j.electacta.2014.07.037

Cited by 30 publications

(14 citation statements)

References 25 publications

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“…2), resulting in about 4000 international peer-reviewed0papers in the 2013-2014 period of time. Some of these articles, which led to the identification of new materials with concrete applications also in other research fields, 23,24 are highly cited: each of them counts even more than 1000 citations. [25][26][27][28] The most performing DSSCs (efficiencies up to 13% have been recently demonstrated 29 ) use organic solvent-based liquid electrolytes.…”

Section: Introductionmentioning

confidence: 99%

Aqueous dye-sensitized solar cells

et al. 2015

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Nowadays, dye-sensitized solar cells (DSSCs) are the most extensively investigated systems for the conversion of solar energy into electricity, particularly for implementation in devices where low cost and good performance are required. Nevertheless, a key aspect is still to be addressed, being considered strongly harmful for a long time, which is the presence of water in the cell, either in the electrolyte or at the electrode/electrolyte interface. Here comes the present review, in the course of which we try our best to address the highly topical role of water in DSSCs, trying to figure out if it is a poisoner or the keyword to success, by means of a thoroughly detailed analysis of all the established phenomena in an aqueous environment. Actually, in the last few years the scientific community has suddenly turned its efforts in the direction of using water as a solvent, as demonstrated by the amount of research articles being published in the literature. Indeed, by means of DSSCs fabricated with water-based electrolytes, reduced costs, non-flammability, reduced volatility and improved environmental compatibility could be easily achieved. As a result, an increasing number of novel electrodes, dyes and electrolyte components are continuously proposed, being highly challenging from the materials science viewpoint and with the golden thread of producing truly water-based DSSCs. If the initial purpose of DSSCs was the construction of an artificial photosynthetic system able to convert solar light into electricity, the use of water as the key component may represent a great step forward towards their widespread diffusion in the market.

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Section: Introductionmentioning

confidence: 99%

Aqueous dye-sensitized solar cells

et al. 2015

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“…On the other hand, the cathodic charge measured at the lowest scan rate provides a total capacitance (double-layer capacitance plus pseudo-capacitance) of about 32 mF• cm −2 , which is in agreement with the sum of the two EIS contributions. This approximate value is significantly greater than those obtained for homologous noble-metal oxide-based materials prepared by reactive sputtering [11], and can be realistically justified only through the involvement of the micro/nano-porosities created by the columnar structure of RuN, which are accessible to the water molecules owing to their low steric hindrance. The large pseudo-capacitance of RuN, also confirmed by Laїk et al [5], is thus plausibly related with Equation (3) and represents the main contribution in the CV curve, in close analogy with the response of ruthenium dioxide [30].…”

Section: Resultsmentioning

confidence: 74%

“…The electrochemical investigation was then carried out on Ti/RuN electrodes having a surface of 1 cm 2 , in a three-body cell equipped with a double-walled saturated calomel electrode (SCE) and a high surface Pt mesh, used respectively as reference electrode (RE) and counter electrode (CE). Further details on the experimental set-up can be found elsewhere [4,11]. Cyclic voltammetry (CV) curves and electrochemical impedance spectroscopy (EIS) data were collected in 1 M NaOH solution, which was preliminarily purged with bubbling nitrogen and then saturated with hydrogen gas through a cathodic polarization of the working electrode at 1000 A• m −2 for 30 min.…”

Section: Methodsmentioning

confidence: 99%

Charge-Storage Process of Stoichiometric and Nanostructured Ruthenium Nitride Thin Films

2015

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Ti-supported RuN thin films, synthesized by rf-magnetron sputtering, have been electrochemically characterized, focusing in particular to their charge-storage capacity, and to the mechanisms that influence this important property, in view, e.g., of applications in supercapacitors. Based on cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) data, a deconvolution of non-faradic and faradic contributions has been attempted, and a mechanism for the charging/discharging process has been proposed

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“…Based on the existing literature, [87][88][89][90][91] two pathways have been proposed for the formation of RCS from chloride ions during electrooxidation. Diamond electrode is an excellent anode material for conversion of Cl À to RCS during electrolysis of chloride-contain wastewater, especially reversed osmosis concentrate, real textile effluent/washing machine wastewater and others.…”

Section: Reactive Chlorine Speciesmentioning

confidence: 99%

“…Diamond electrode is an excellent anode material for conversion of Cl À to RCS during electrolysis of chloride-contain wastewater, especially reversed osmosis concentrate, real textile effluent/washing machine wastewater and others. Based on the existing literature, [87][88][89][90][91] two pathways have been proposed for the formation of RCS from chloride ions during electrooxidation. At low proton and chloride concentration, the formation of RCS Figure 5.…”

Section: Reactive Chlorine Speciesmentioning

confidence: 99%

Nature, Mechanisms and Reactivity of Electrogenerated Reactive Species at Thin‐Film Boron‐Doped Diamond (BDD) Electrodes During Electrochemical Wastewater Treatment

2019

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Electrooxidation of hazardous organic pollutants contaminating wastewater using thin-film boron-doped diamond (BDD) electrodes is an efficient and well-studied treatment technique. In this review, the three main reactive species, namely: reactive oxygen, chlorine and sulfate species, which can be electrogenerated and then participate in the oxidation processes during electrooxidative wastewater treatment using BDD electrodes, are discussed. The main factors affecting the nature and quantity of the electrogenerated reactive species, specifically the composition of the BDD electrode (doping level and sp 3 /sp 2 ratio) and the operating parameters (working current density and composition of water matrix been electrolyzed) were explained with relative examples. Extensive discussion on mode and reactivity of the three reactive species with organic pollutants during electrooxidation was provided and the future perspectives and direction of research on reactive species generated on BDD electrodes were also discussed.[a] Dr.

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Influence of the nature of the electrode material and process variables on the kinetics of the chlorine evolution reaction. The case of IrO2-based electrocatalysts

Cited by 30 publications

References 25 publications

Aqueous dye-sensitized solar cells

Aqueous dye-sensitized solar cells

Charge-Storage Process of Stoichiometric and Nanostructured Ruthenium Nitride Thin Films

Nature, Mechanisms and Reactivity of Electrogenerated Reactive Species at Thin‐Film Boron‐Doped Diamond (BDD) Electrodes During Electrochemical Wastewater Treatment

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