Cross-permeation and consumption of hydrogen during proton exchange membrane electrolysis

Ito, Hiroshi; Miyazaki, Naoki; Ishida, M.; Nakano, Akihiro

doi:10.1016/j.ijhydene.2016.08.119

Cited by 68 publications

(41 citation statements)

References 12 publications

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“…The Tafel equation used to describe the relationship between PEMFC overpotential and current can explain this. In addition, as the hydrogen permeability increases, the water generated in the cathode polymer also increases, which reduces the resistance of the membrane

E_{open} = 0.79543 + \frac{0.29396}{1 + exp ((), \frac{D_{H 2} - 2.9853 \times 10^{- 9}}{3.3631 \times 10^{- 9}})} R^{2} = 99.491 %,

…”

Section: Resultsmentioning

confidence: 99%

“…In addition, as the hydrogen permeability increases, the water generated in the cathode polymer also increases, which reduces the resistance of the membrane. 30…”

Section: Hydrogen Permeation Flux Distribution Along the Anode Cl-mmentioning

confidence: 99%

“…The crossover transport of hydrogen through the membrane is described by Fick's law. 30,36 The hydrogen concentration in the cathode is considered as zero because the penetrated hydrogen immediately reacts with oxygen on the cathode side. The flux of hydrogen through the membrane is defined as…”

mentioning

confidence: 99%

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Research on two‐phase flow considering hydrogen crossover in the membrane for a polymer electrolyte membrane fuel cell

Ji¹,

Niu

Wang

et al. 2019

Int J Energy Res

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Summary Hydrogen crossover has an important effect on the performance and durability of the polymer electrolyte membrane fuel cell (PEMFC). Severe hydrogen crossover can accelerate the degradation of membrane and thus increase the possibility of explosion. In this study, a two‐phase, two‐dimensional, and multiphysics field coupling model considering hydrogen crossover in the membrane for PEMFC is developed. The model describes the distributions of reactant gases, current density, water content in membrane, and liquid water saturation in cathode electrodes of PEMFC with intrinsic hydrogen permeability, which is usually neglected in most PEMFC models. The conversion processes of water between gas phase, liquid phase, and dissolved water in PEMFC are simulated. The effects of changes in hydrogen permeability on PEMFC output performance and distributions of reactant gases and water saturation are analyzed. Results showed that hydrogen permeability has a marked effect on PEMFC operating under low current density conditions, especially on the open circuit voltage (OCV) with the increase of hydrogen permeability. On the contrary, the effect of hydrogen permeability on PEMFC at high current density is negligible within the variation range of hydrogen permeability in this study. The nonlinear relations of OCV with hydrogen diffusion rate are regressed.

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E_{open} = 0.79543 + \frac{0.29396}{1 + exp ((), \frac{D_{H 2} - 2.9853 \times 10^{- 9}}{3.3631 \times 10^{- 9}})} R^{2} = 99.491 %,

…”

Section: Resultsmentioning

confidence: 99%

“…In addition, as the hydrogen permeability increases, the water generated in the cathode polymer also increases, which reduces the resistance of the membrane. 30…”

Section: Hydrogen Permeation Flux Distribution Along the Anode Cl-mmentioning

confidence: 99%

See 1 more Smart Citation

Research on two‐phase flow considering hydrogen crossover in the membrane for a polymer electrolyte membrane fuel cell

Ji¹,

Niu

Wang

et al. 2019

Int J Energy Res

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“…Water splitting is a promising process that could provide a route to a clean and inexhaustible renewable energy, but significant issues remain for establishing scalable systems and also coping with intermittent power . In this regard proton exchange membrane electrolysis (PEME) is a prime candidate to achieve this transformation but gas crossover through the membrane is both a safety concern and affects the purity of H 2 , as well as degrading the membrane . Thus, it is highly important to develop new strategies to coordinate the intermittent renewable power sources that meet the requirements of H 2 large‐scale production, transportation and storage simultaneously with safe and economic approaches.…”

Section: Figurementioning

confidence: 99%

“…[1] In this regard proton exchangem embrane electrolysis (PEME) is ap rime candidate to achieve this transformation but gas crossover through the membrane is both as afety concern and affects the purity of H 2 ,a sw ell as degrading the membrane. [2,3] Thus, it is highly important to developn ew strategiest oc oordinate the intermittent renewable powers ources that meett he requirements of H 2 large-scale production, transportation and storages imultaneously with safe and economic approaches.Previously,w ei ntroducedt he electron-coupled-protonbuffer( ECPB) to separatet he processo fw ater splitting in time and space. [4][5][6][7] In this way,t he hydrogen evolutionr eaction (HER) is no longerc oupled with the rate-limiting step of the oxygen evolution reaction (OER).…”

mentioning

confidence: 99%

Tuning Redox Active Polyoxometalates for Efficient Electron‐Coupled Proton‐Buffer‐Mediated Water Splitting

Lei

Yang

Liu

et al. 2019

Chemistry A European J

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We present strategies to tune the redox properties of polyoxometalate clusters to enhance the electron‐coupled proton‐buffer‐mediated water splitting process, in which the evolution of hydrogen and oxygen can occur in different forms and is separated in time and space. By substituting the heteroatom template in the Keggin‐type polyoxometalate cluster, H6ZnW12O40, it is possible to double the number of electrons and protonation in the redox reactions (from two to four). This increase can be achieved with better matching of the energy levels as indicated by the redox potentials, compared to the ones of well‐studied H3PW12O40 and H4SiW12O40. This means that H6ZnW12O40 can act as a high‐performance redox mediator in an electrolytic cell for the on‐demand generation of hydrogen with a high decoupling efficiency of 95.5 % and an electrochemical energy efficiency of 83.3 %. Furthermore, the H6ZnW12O40 cluster also exhibits an excellent cycling behaviour and redox reversibility with almost 100 % H2‐mediated capacity retention during 200 cycles and a high coulombic efficiency >92 % each cycle at 30 mA cm−2.

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Silver‐Based Supportless Membrane Electrode Assemblies for Electrochemical CO₂ Reduction

Weseler,

Löffelholz,

Osiewacz

et al. 2024

Electrochemical Science Adv

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Most commonly, electrochemical CO2 reduction is performed in a three‐compartment setup employing gas diffusion electrodes (GDEs) to decrease mass transport limitations of the gaseous reactant CO2 to the reaction interface. However recently, there has been a rising number of investigations on suitable membrane electrode assemblies (MEAs) to overcome ohmic potential losses caused by the electrolyte gaps in the systems. While the significant majority of MEAs exhibited in literature is based on catalyst‐coated gas diffusion layers, this work presents an approach that does not require a likewise support. On the basis of a catalyst suspension similar to mixtures already employed for GDE production on industrial level, a method to directly transfer the resulting catalyst layers to the membrane is developed. The Faradaic efficiency of carbon monoxide, i.e. target product formation of GDEs manufactured according to a similar procedure, can be matched or even exceeded for individual modifications of the exchange MEAs. Simultaneously, the cell potentials can be remarkably decreased in this setup. By gradual adaptation of the fabrication procedure, the influence of important manufacturing parameters is unraveled, also discussing the effect of hydrogen permeation through the membrane.

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Cross-permeation and consumption of hydrogen during proton exchange membrane electrolysis

Cited by 68 publications

References 12 publications

Research on two‐phase flow considering hydrogen crossover in the membrane for a polymer electrolyte membrane fuel cell

Research on two‐phase flow considering hydrogen crossover in the membrane for a polymer electrolyte membrane fuel cell

Tuning Redox Active Polyoxometalates for Efficient Electron‐Coupled Proton‐Buffer‐Mediated Water Splitting

Silver‐Based Supportless Membrane Electrode Assemblies for Electrochemical CO₂ Reduction

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Cross-permeation and consumption of hydrogen during proton exchange membrane electrolysis

Cited by 68 publications

References 12 publications

Research on two‐phase flow considering hydrogen crossover in the membrane for a polymer electrolyte membrane fuel cell

Research on two‐phase flow considering hydrogen crossover in the membrane for a polymer electrolyte membrane fuel cell

Tuning Redox Active Polyoxometalates for Efficient Electron‐Coupled Proton‐Buffer‐Mediated Water Splitting

Silver‐Based Supportless Membrane Electrode Assemblies for Electrochemical CO2 Reduction

Contact Info

Product

Resources

About

Silver‐Based Supportless Membrane Electrode Assemblies for Electrochemical CO₂ Reduction