Alkaline Electrolysers

Grigoriev, S.A.; Фатеев, В. Н.; Millet, Pierre

doi:10.1016/b978-0-12-819727-1.00024-8

Cited by 5 publications

(1 citation statement)

References 44 publications

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“…Amongst the various types of electrolysis cells, the alkaline water electrolysis cell (AWE) has demonstrated noteworthy benefits. AWEs possess several advantages, including high efficiency, relatively low cost, and simplicity, primarily attributed to the utilization of non-precious metal catalysts like nickel and iron for the electrodes (1,2). Furthermore, the development of highly conductive, commercially-available diaphragms with a high bubble point, such as Zirfon® Perl UTP 500 (3,4), and the reduction of ohmic resistance through the so-called zero-gap arrangement (5,6), resulted in a significant increase in efficiency, even at higher current densities.…”

Section: Introductionmentioning

confidence: 99%

Numerical Two-Phase Simulations of Alkaline Water Electrolyzers

Hess,

Zhang,

Kadyk

et al. 2023

ECS Trans.

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This study presents a computational simulation of a zero-gap alkaline water electrolysis cell. The model employed is a three-dimensional, steady-state, non-isothermal, two-phase-flow computational fluid dynamics approach, which has been implemented by means of the OpenFOAM software library. This integration expands the capabilities of the existing libraries within the open-source framework, openFuelCell2, by introducing novel surface and volumetric coupling strategies to connect the dependent quantities over the existing interfaces and different regions. Additionally, the Nernst–Planck equation is incorporated into the two-phase Eulerian–Eulerian framework to describe the behavior of the liquid electrolyte within the cell.The model’s validation in this study is based on experimentally-determined polarization curves for various temperatures and volumetric flow rates. The results obtained show good agreement with the experimentally-acquired data. The implemented model has demonstrated its ability to accurately predict the transport of ions within the electrolyte and assess the influence of the generated gas phase on the local distribution of current density.

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