On the electrochemical activity of β-lead dioxide in sulfuric acid solution: a comparative study between the chemical and electrochemical routes

Derafa, I.; Zerroual, L.; Matrakova, M.

doi:10.1007/s10008-017-3861-3

Cited by 7 publications

(7 citation statements)

References 23 publications

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“…common [1] and novel [2] (bipolar [3] and semi-bipolar [4]) lead-acid batteries, waste water treatment [5], and many other purposes [6][7][8]. Several studies concerning the electrochemical characterization of PbO 2 films (charge-discharge characteristics, aging processes) have been carried out previously [9][10][11][12]. However, in the majority of these investigations, only electrochemical methods have been used.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the electrochemical behaviour of lead dioxide in aqueous sulfuric acid solutions by using the in situ EQCM technique

Broda

Inzelt

2019

J Solid State Electrochem

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The charge-discharge characteristics and the aging mechanism of PbO 2 layers in contact with sulfuric acid solutions of different concentrations (1.5-5.0 M) were studied by using combined cyclic voltammetry and electrochemical quartz crystal microbalance (EQCM) techniques. For this purpose, thick lead dioxide layers were electrodeposited on gold substrate from aqueous solutions of Pb(NO 3) 2 dissolved in nitric acid. Based on the electrochemical and the mass change responses, it was found that in more concentrated solutions of H 2 SO 4 , the main reduction reaction was the transformation of lead dioxide to lead sulfate. However, in less concentrated sulfuric acid media, the transformation of lead dioxide to lead(II) ion became the main reaction. These Pb 2+ ions transformed into lead sulfate crystals later by a chemical reaction. Because the electrochemical oxidation of lead sulfate is less favourable in sulfuric acid medium of higher concentrations, thus, PbO 2 layers cannot be tested by continuous cyclization, which is necessary to study their aging parameters. Therefore, a delay step before each cyclic voltammogram was applied while the nonconductive lead sulfate dissolves or alternatively, by applying a pre-oxidation step prior to each cyclic voltammetry experiment to produce electrochemically significant amount of lead dioxide which can be reduced during the following negative potential sweep.

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Section: Introductionmentioning

confidence: 99%

Investigation of the electrochemical behaviour of lead dioxide in aqueous sulfuric acid solutions by using the in situ EQCM technique

Broda

Inzelt

2019

J Solid State Electrochem

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“…The lower R ct of the PbO 2 nanoparticles may be due to its higher water content. 35 In addition, the conductivity of the PbO 2 nanoparticles is identified as 1.1 × 10 3 Ω −1 cm −1 , higher than the reference PbO 2 particles (5.6 × 10 2 Ω −1 cm −1 , seen in Table II). Both lower R ct and higher conductivity can indicate the advantage of the PbO 2 nanoparticles in electrochemical ozone generation over the reference PbO 2 particles.…”

Section: Resultsmentioning

confidence: 79%

“…The PbO 2 nanoparticles prepared in this work show similar thermogravimetric behavior with typical β-PbO 2 . 35 An endothermic peak is appeared at 180 °C of the DSC curve, indicating evaporation of the water that is strongly bound (chemisorbed) to the PbO 2 nanoparticles. Whereas the reference PbO 2 particles do not show such thermogravimetric behavior, which may be due to the mixed α/β crystal structure of the PbO 2 particles (seen in Fig.…”

Section: Resultsmentioning

confidence: 99%

Facile Synthesis of β-PbO₂ Nanoparticles Range from 10–30 nm and their Application for Ozone Generation

Yuan¹,

Líu²,

Wang³

et al. 2021

J. Electrochem. Soc.

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β-PbO2 is an important high oxygen overpotential anode coating material. Further study on nanoscale β-PbO2 with higher performance and lower cost is a critical issue in order to develop the electrochemical ozone generator. Herein, an improved β-PbO2 nanoparticles synthesizing strategy based on the traditional Pb(OAc)4 hydrolysis method is proposed in this work, which is more scalable for industrial-scale production compared with existed nano β-PbO2 synthesizing methods. The possible mechanism of synthesizing β-PbO2 nanoparticles via Pb(OAc)4 hydrolysis was discussed for the first time. Based on the proposed mechanism, the size and morphology of the β-PbO2 nanoparticles were effectively controlled, and alternative raw material that can significantly reduce costs was developed. SEM, TEM, XRD, and XPS results indicate that pure phase β-PbO2 nanoparticles range from 10-30 nm were obtained. In addition, the use of alternative raw materials reduces the cost by 90%-95% compared to the traditional Pb(OAc)4 hydrolysis method. The β-PbO2 nanoparticles showed good ozone generation performances. The energy consumption per unit ozone of the β-PbO2 nanoparticles is reduced by 51.9% at the optimized operation condition than the reference PbO2 particles used for comparis

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“…14. 33,34 The second exothermic peak spans from 60 to about 145 °C, and the third peak spans from 145 °C to about 250 °C. These ranges correspond to the release of water and hydroxyl groups from the hydrated or gel parts of the PAM.…”

Section: Resultsmentioning

confidence: 99%

The Effect of Various Graphite Additives on Positive Active Mass Utilization of the Lead-Acid Battery

Kosacki

Doğan

2021

J. Electrochem. Soc.

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Various graphite additives were incorporated into the positive paste in a range of amounts to study and compare their effects on the positive active mass utilization of lead-acid batteries. Four types of graphite—two anisotropic, one globular, and one fibrous—were investigated by SEM, XRD, and Raman spectroscopy. Their physico-chemical properties were correlated to the electrochemical performances of 2 V test batteries under a wide range of conditions. This works presents the influence of graphite additives’ structural order, phase composition, particle size, morphology, and surface area on the formation, initial cycling, and electrochemical utilization of the positive plate. The effects of various graphite on electrochemical performance were investigated using SEM, mercury porosimetry, and TGA/DSC to correlate the function of graphite on the positive active mass utilization of the lead-acid battery.

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On the electrochemical activity of β-lead dioxide in sulfuric acid solution: a comparative study between the chemical and electrochemical routes

Cited by 7 publications

References 23 publications

Investigation of the electrochemical behaviour of lead dioxide in aqueous sulfuric acid solutions by using the in situ EQCM technique

Investigation of the electrochemical behaviour of lead dioxide in aqueous sulfuric acid solutions by using the in situ EQCM technique

Facile Synthesis of β-PbO₂ Nanoparticles Range from 10–30 nm and their Application for Ozone Generation

The Effect of Various Graphite Additives on Positive Active Mass Utilization of the Lead-Acid Battery

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On the electrochemical activity of β-lead dioxide in sulfuric acid solution: a comparative study between the chemical and electrochemical routes

Cited by 7 publications

References 23 publications

Investigation of the electrochemical behaviour of lead dioxide in aqueous sulfuric acid solutions by using the in situ EQCM technique

Investigation of the electrochemical behaviour of lead dioxide in aqueous sulfuric acid solutions by using the in situ EQCM technique

Facile Synthesis of β-PbO2 Nanoparticles Range from 10–30 nm and their Application for Ozone Generation

The Effect of Various Graphite Additives on Positive Active Mass Utilization of the Lead-Acid Battery

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Product

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Facile Synthesis of β-PbO₂ Nanoparticles Range from 10–30 nm and their Application for Ozone Generation