Two-Phase Nonisothermal Zero-Gap Alkaline Water Electrolyzer

Application ID: 121091


This model defines a zero-gap alkaline water electrolyzer, where oxygen and hydrogen gas are evolved in porous gas diffusion nickel felt electrodes, placed adjacent to a porous separator (diaphragm).

The geometry defines a unit cell of an electrolyzer stack, in turn comprising two full electrolyzer cells, extending 10 cm along the channel direction. The two electrolyzer cells are separated by a corrugated bipolar steel plate.

The model solves for the fully intercoupled current distribution of the electrolyzer cells, two-phase flow of evolved gases and electrolyte, and heat transfer.

This model example illustrates applications of this type that would nominally be built using the following products: