On the mechanism of the chlorine evolution reaction on Pt electrode

Yokoyama, Takamitsu; Enyo, M.

doi:10.1016/0022-0728(82)87033-2

Cited by 10 publications

(2 citation statements)

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“…The reduction of Cl 2 was also examined by Frumkin and Tedorradze . The mechanism of chloride oxidation on a Pt macroelectrode has been previously reported . The following mechanism [Eqs.…”

Section: Introductionmentioning

confidence: 99%

“…[15] The mechanism of chloride oxidation on aP tm acroelectrode has been previously reported. [16][17][18][19][20] Thef ollowing mechanism [Eqs. (1) and (2)] shows the Cl 2 evolution reaction on noblemetal surfaces, where Mi sa na ctive site and ClC is discharged on the electrode surface: [13] Cl À þ M Ð MClC ads þ e À ð1Þ 2MClC ads !…”

Section: Introductionmentioning

confidence: 99%

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Nanoparticle Surface Coverage Controls the Speciation of Electrochemically Generated Chlorine

et al. 2016

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Cyclic voltammetry is used to investigate the oxidation of chloride on platinum nanoparticles. The electrochemical response of the nanoparticles drop‐cast onto a glassy carbon electrode is compared to that recorded at a platinum macroelectrode. The use of “nano”‐ and “macro”‐scale Pt reveals different ratios of the electrochemically formed products, chlorine (Cl2) and the trichloride (Cl3−) anion. This difference in the speciation is attributed to the chloride oxidation being a surface‐reaction‐limited process. For the situation in which there are a limited number of active sites available on the electrode, owing to low nanoparticle surface coverages, the sub‐diffusion‐limited currents result in higher chloride concentrations adjacent to the electrochemical interface. This excess chloride at the interface leads to the formation of the trichloride anion. The effect of surface oxide formation towards the chloride oxidation is also examined on both electrodes. Formation of platinum oxide serves to inhibit the rate of chloride oxidation.

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“…The reduction of Cl 2 was also examined by Frumkin and Tedorradze . The mechanism of chloride oxidation on a Pt macroelectrode has been previously reported . The following mechanism [Eqs.…”

Section: Introductionmentioning

confidence: 99%