Hydrogen Depolarized Anodes with Liquid Anolyte: Proof of Concept

Sacré, Nicolas; Faral, Manon; Chenitz, Régis; Mokrini, Asmae; Huot, Jean Yves; Bouchard, Pierre; Bibienne, Thomas; Magnan, Jean-François; Laroche, Nicolas; Dollé, Mickaël

doi:10.1007/s12678-021-00700-8

Electrocatalysis

2022

DOI: 10.1007/s12678-021-00700-8

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Hydrogen Depolarized Anodes with Liquid Anolyte: Proof of Concept

Nicolas Sacré

Manon Faral

Régis Chenitz

et al.

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2024

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Cited by 2 publications

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“…A practical way to produce an effective HDA would be to get inspiration from another applied technology performing the same electrochemical reaction, namely an anode from a proton exchange membrane fuel cell (PEMFC). Currently under study, 13,14 this proof of concept raises some concerns about the influence of lithium in such an environment.…”

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confidence: 99%

Effect of Lithium Sulfate on the Catalytic Activity of Pt for Hydrogen Oxidation Reaction

Faral¹,

Sacré²,

Chenitz³

et al. 2022

J. Electrochem. Soc.

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The effect of Lithium sulfate on the hydrogen oxidation reaction (HOR) in 0.1 M H2SO4 electrolyte was investigated on flat Pt electrode. The Li+ concentration solutions of 0, 10, 25 and 32 g l−1 were studied using cyclic voltammetry and rotating disk electrode (RDE) techniques. The obtained results demonstrate a good repeatability and confidence in analysis method, to understand the influence of lithium sulfate on HOR for an electrocatalysis system. The electrochemical surface area, limiting current and kinetic parameters were measured and analysed using Koutecky-Levich and Tafel representations to investigates the different types of lithium sulfate interactions on the catalytic properties of Pt. In presence of Li2SO4, the H+ adsorption/desorption process, species mass-transport and kinetic current density are reduced. Furthermore, the Tafel’s slope analyse show a change of the rate-determining steps for HOR mechanism. More detailed results of the kinetic analysis and lithium impact on the studied systems are discussed in this work.

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mentioning

confidence: 99%

Effect of Lithium Sulfate on the Catalytic Activity of Pt for Hydrogen Oxidation Reaction

Faral¹,

Sacré²,

Chenitz³

et al. 2022

J. Electrochem. Soc.

Self Cite

View full text Add to dashboard Cite

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Closed‐Loop and Precipitation‐Free CO₂ Capture Process Enabled by Electrochemical pH Gradient

Zhou,

Guan

2024

ChemSusChem

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Carbon dioxide (CO2) capture is a crucial negative‐emission technology for the mitigation of climate change and global warming. The urgent need of combating climate change motivates the research and development of economical, effective and environmentally benign processes for CO2 capture. Herein, we design and report a flow cell for the CO2 capture from air or flue gas in a precipitate‐free and closed‐loop manner. No ion‐exchange membrane is used in the electrolyser. The water electrolysis produces acidic solution near the anode and alkaline solution near the cathode, while generating valuable hydrogen and oxygen byproducts. The dilute CO2 in air or flue gas is captured by the alkaline solution, which is then mixed with the acidic solution to release the concentrated CO2. The process operates in a cyclic manner as driven by the water electrolysis and the mechanical pumping. No precipitation of calcium carbonate is involved for fixing CO2, which may simplify the separation process and minimizing the materials loss. The simple process enabled by electrochemical pH gradient shows promise for efficient CO2 capture on both small and large scales.

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Hydrogen Depolarized Anodes with Liquid Anolyte: Proof of Concept

Cited by 2 publications

References 22 publications

Effect of Lithium Sulfate on the Catalytic Activity of Pt for Hydrogen Oxidation Reaction

Effect of Lithium Sulfate on the Catalytic Activity of Pt for Hydrogen Oxidation Reaction

Closed‐Loop and Precipitation‐Free CO₂ Capture Process Enabled by Electrochemical pH Gradient

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Hydrogen Depolarized Anodes with Liquid Anolyte: Proof of Concept

Cited by 2 publications

References 22 publications

Effect of Lithium Sulfate on the Catalytic Activity of Pt for Hydrogen Oxidation Reaction

Effect of Lithium Sulfate on the Catalytic Activity of Pt for Hydrogen Oxidation Reaction

Closed‐Loop and Precipitation‐Free CO2 Capture Process Enabled by Electrochemical pH Gradient

Contact Info

Product

Resources

About

Closed‐Loop and Precipitation‐Free CO₂ Capture Process Enabled by Electrochemical pH Gradient