Void Fraction and Current Density Distributions in a Water Electrolysis Cell

Funk, James E.; Thorpe, J. F.

doi:10.1149/1.2411770

Cited by 52 publications

(23 citation statements)

References 5 publications

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“…In industrial cells it is common to have a rapidly moving electrolyte, the velocity of which is greater than the relative bubble rise velcoity by some orders of magnitude. Indeed, as experimentally confirmed by Thorpe and coworkers (79,152) at a water electrolysis cell, the slip ratio of gas bubbles and surrounding liquid is for practical purposes equal to unity. It would thus appear an adequate simplification to completely disregard the rising velcoity v, instead of VL • Rousar and coworkers carried out a detailed analysis of flowing electrolyte in cells with bipolar (153)(154)(155)(156) and unipolar electrodes.…”

Section: B3 Current Distribution and Ohmic Resistancementioning

confidence: 71%

Gas-Evolving Electrodes

Vogt¹

1983

Comprehensive Treatise of Electrochemistry

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Section: B3 Current Distribution and Ohmic Resistancementioning

confidence: 71%

Gas-Evolving Electrodes

Vogt¹

1983

Comprehensive Treatise of Electrochemistry

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“…This was achieved by solution of the modified Laplace equation using commercial finite element method software; experimental current density measurements were determined using the segmented electrode method. The distribution takes into account the effective conductivity of gas-liquid mixture versus the gas volume fraction and the authors suggest an empirical equation valid up to 74% gas fraction assuming 100% efficiency for gas production and a phase velocity ratio of 1 [51].…”

Section: Chlor-alkali Synthesismentioning

confidence: 99%

The filter-press FM01-LC laboratory flow reactor and its applications

Rivera

León

Nava

et al. 2015

Electrochimica Acta

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Keywords: electrolyser energy storage environmental remediation FM01-LC mass transport metal ion removal inorganic and organic electrosynthesis water treatment A B S T R A C T The FM01-LC is a laboratory-scale, electrochemical filter-press cell with a projected electrode area of 64 cm 2 and a rectangular electrolyte flow channel which was originally based on the larger FM21-SP electrolyser of 2100 cm 2 projected electrode area designed for the chlor-alkali industry then diversified to other applications. Many laboratories and industries have utilised this type of controlled flow reactor containing plane parallel electrodes in a rectangular channel for industrial and commercial applications. The diverse range of electrodes possible in such cells is emphasized with examples including 3-D metals and carbon, coated metal electrodes and nanostructured surfaces offering a high surface area. The experimental characterization and computational modelling of its reaction environment are concisely described discussed to appreciate the features of this type of electrochemical reactor. The cell construction and reaction environment are summarized, followed by an illustration of its use for a range of applications that include organic and inorganic electrosynthesis, metal ion removal, energy storage, environmental remediation (e.g., precious metal recycling or anodic destruction of organics) and drinking water treatment. Examples of the cell for energy conversion and storage (flow batteries and proton exchange membrane fuel cells) are briefly illustrated. The use of such a flow cell for the characterization of new electrochemical processes and to provide data enabling scale-up is considered.

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“…Increasing number of gas bubbles between electrodes subsequently reduces the local current density [1]. Upon reduction of operating pressure increases the partial pressure difference between gas phase and liquid phase, and increase in driving force for dissolution of gasses from electrolyte solution resulting increase in gas bubble rising velocity [2][3] [4]. The volumetric production rate of hydrogen increases with increase in operating temperature, and this might be due to decrease in electrolyte viscosity which subsequently increases ion's mobility.…”

Section: Description Of Water Electrolysis Modelmentioning

confidence: 99%

“…No gas separator was introduced in the system. [4]. Distance between two consecutive electrodes is constant.…”

Section: Description Of Water Electrolysis Modelmentioning

confidence: 99%

Analysis of Coupled Effect of Pertinent Process Parameters of Water Electrolysis

Mandal¹

2016

IJRET

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Water electrolysis for the production of hydrogen proceeds via formation of gas bubbles between electrodes was studied and there are several parameters which influence the process. The process parameters such as temperature, pressure, electrolyte concentration and input power are considered as the major parameters. Particularly for water electrolysis it was observed through experiments the coupled effect of parameters on the production rate of hydrogen. The aim of this paper is to develop a model correlation between volumetric production rate of hydrogen and above mentioned parameters. To understand the coupled effect of process parameters three dimensionless groups were derived through dimensional analysis.

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Void Fraction and Current Density Distributions in a Water Electrolysis Cell

Cited by 52 publications

References 5 publications

Gas-Evolving Electrodes

Gas-Evolving Electrodes

The filter-press FM01-LC laboratory flow reactor and its applications

Analysis of Coupled Effect of Pertinent Process Parameters of Water Electrolysis

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