Proposal for a new system for simultaneous production of hydrogen and hydrogen peroxide by water electrolysis

Ando, Yoshio; Tanaka, Tadayoshi

doi:10.1016/j.ijhydene.2004.02.001

Cited by 84 publications

(59 citation statements)

References 9 publications

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“…This observation supports the observation made by Ando and Tanaka [35] who proposed a new system for the simultaneous production of hydrogen and hydrogen peroxide by water electrolysis in the electroremediation process by employing carbon electrodes. The following chemical reaction was noticed by Ando and Tanaka [35] at the anode. They also suggested that the anode material promotes the hydrogen peroxide production rate and that inhibition of the oxygen evolution reaction rate is required in order to realize the proposed system.…”

Section: Peroxide Productionsupporting

confidence: 91%

Electrochemical studies on the performance of SS316L electrode in electrokinetics

et al. 2009

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Organic and trace metal pollutants are removed by employing various electrodes in an electrokinetic (EK) process. Stainless steel was used either as an anode or a cathode by various investigators in electroremediation systems. In the present study, the role of SS316L as an anode and cathode in EK system was studied by the measurements of pH, conductivity of electrolyte, and potential of the anode and cathode at different current densities. The weight loss of the anode and cathode and the leaching of chromium, iron, and nickel at different current densities were measured and discussed with an electroosmosis process. The electrochemical behavior of SS316L electrode in neutral, acidic and alkaline pH in soil environment was studied by an electrochemical technique viz. polarization study. Surface analysis of SS316L after EK was done by XPS and SEM. The higher conductivity was noticed at anolyte when compared to catholyte. The weight loss of the anode was in the following order 0.615 > 0.307 > 0.123 mA/cm 2 and the cathode corrosion rate was vice versa. Peroxide production was also noticed at the anolyte, which may encourage the degradation of the total organic content (TOC) in the soil. The OCP (open circuit potential) of SS316L was about +75 mV vs SCE in the soil extract; while adding acetic acid, the potential shifted to the positive side, to about +380 mV vs SCE. The breakdown potential and the range of passivation potential were higher in acetic acid added system when compared to other systems. Pitting was observed on both the anode and cathode within 48 h during the EK process. The present study concludes that SS is not a proper electrode material for the EK process.

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Section: Peroxide Productionsupporting

confidence: 91%

Electrochemical studies on the performance of SS316L electrode in electrokinetics

et al. 2009

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“…Ando and Tanaka [26] have proposed a new system in which the products of water electrolysis are hydrogen and hydrogen peroxide, produced simultaneously in order to benefit from the higher economic value of hydrogen peroxide as compared to oxygen. However, hydrogen peroxide is a very powerful oxidizing species in acidic solutions, and it can potentially provoke the dissolution of the transition metal oxides used as electrocatalysts.…”

Section: Introductionmentioning

confidence: 99%

Selectivity of Nanocrystalline IrO2-Based Catalysts in Parallel Chlorine and Oxygen Evolution

et al. 2014

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This paper examines the detection and quantification of the potentially corrosive byproducts of the oxygen evolution reaction on iridium and iridium-ruthenium mixed oxides. A conventional but stationary ring-disc electrode was employed in a flow cell configuration for the detection of volatile reaction product other than oxygen, and the formation of at least two active species was detected.Potential-modulated UV-VIS reflectance spectroscopy helped to identify one of these volatile reaction byproducts as hydrogen peroxide, and the other is tentatively suggested to be ozone. It was found that these species are formed under potentiodynamic conditions due to the chemical recombination of the absorbed reaction intermediates. The influence of the electrode material composition on the production yield of these byproducts was studied, and we found that the generation of these corrosive reaction byproducts is suppressed the more active the catalyst is for the OER. The formation of by-products can therefore be addressed by a rational choice of the electrode materials based on the adsorption energy of the reaction intermediates as is done for the OER itself. Steady-state electrolysis minimizes hydrogen peroxide formation as byproduct of the oxygen evolution reaction.

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“…For carbon-based electrodes, efficiencies of 30%-50% have been reported. [21] Additionally, oxides such as MnO x appear promising catalysts. [22,23] Table 1 shows that the current market price of the mentioned alternatives is significantly more attractive than oxygen.…”

Section: Doi: 101002/adsu201600035mentioning

confidence: 99%

“…This makes selective H 2 O 2 production experimentally challenging. Nevertheless, selective production of hydrogen peroxide by oxidation of water was recently reported to occur on carbon materials and MnO x , [21,22] with these catalysts typically achieving a faradaic efficiency of 40%. Since these oxidation catalysts need basic conditions, the PEC modeling was done using either 0.1 or 1 m KOH with HER overpotentials slightly worse than our previous reactions done in acid (ɳ HER = 35 mV [45] @ 1 mA cm −2 with a Tafel slope of 40 mV dec −1 ).…”

Section: Doi: 101002/adsu201600035mentioning

confidence: 99%

Beyond Water Splitting: Efficiencies of Photo‐Electrochemical Devices Producing Hydrogen and Valuable Oxidation Products

Mei

Mul

Seger

2017

Advanced Sustainable Systems

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The material requirements (e.g., to be corrosion resistant) and the techno-economic viability of these devices should share many of the same traits as reported for PEC water splitting. [9,24,25] Since all of the aforementioned reactions are simple 2e − oxidation reactions with minimal overpotential, losses should be less important than encountered in water oxidation. [26,27] PEC systems for water splitting [17,[28][29][30][31][32][33] have been extensively modeled, and to less extent PEC systems for CO 2 reduction have been as well. [34,35] To the best of our knowledge, in-depth modeling of halide oxidation, or oxidation of water to H 2 O 2 , has yet to be published. In this perspective, we therefore model single and dual absorber devices where hydrogen (as a fuel) and valuable oxidation products are simultaneously produced. We discuss the effect of the thermodynamic potential and kinetics of the different oxidation reactions on the solar-to-hydrogen (STH) efficiencies of PEC devices and point out how new catalysts for partial oxidation of water to H 2 O 2 will increase PEC efficiencies. Utilizing state-of-the-art modeling approaches provided by a JavaScript, web based model (WBM) developed by Seger et al., [32] we will demonstrate that bromine, chlorine, and hydrogen peroxide based STH conversion efficiencies are high, and PEC technology may be economically viable.The oxidation reactions considered in this study are summarized in Equations (1) Of all these oxidation reactions, only the bromine evolution reaction (BrER, Equation (1)) is thermodynamically favored over the oxygen evolution reaction (OER, Equation (4)

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Proposal for a new system for simultaneous production of hydrogen and hydrogen peroxide by water electrolysis

Cited by 84 publications

References 9 publications

Electrochemical studies on the performance of SS316L electrode in electrokinetics

Electrochemical studies on the performance of SS316L electrode in electrokinetics

Selectivity of Nanocrystalline IrO2-Based Catalysts in Parallel Chlorine and Oxygen Evolution

Beyond Water Splitting: Efficiencies of Photo‐Electrochemical Devices Producing Hydrogen and Valuable Oxidation Products

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