Abstract
The crossover and ohmic losses of porous polymer sheets used as transparent product separators in solar water splitting cells are evaluated using multiphysics simulation and validation experiments.
Highlights
Green hydrogen production technologies have received signi cant attention due to increasing environmental concerns over traditional energy production methods.[1,2,3,4] One interesting method of producing green hydrogen is photoelectrochemical (PEC) water splitting, in which light-absorbing semiconductors, o en coated with additional electrocatalysts, are immersed in aqueous solutions to drive the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER)
The numerical model used in this study considers the following processes: (i) oxygen evolution reaction (OER) at the anode, (ii) hydrogen evolution reaction (HER) at the cathode, (iii) ionic and dissolved gas transport within the electrolyte solution, (iv) continuous supply of the electrolyte and (v) transport and removal of gaseous hydrogen and oxygen
Using a combination of experiments and numerical simulations, we have shown that these polymer sheets have low parasitic absorption, but they have lower
Summary
Green hydrogen production technologies have received signi cant attention due to increasing environmental concerns over traditional energy production methods.[1,2,3,4] One interesting method of producing green hydrogen is photoelectrochemical (PEC) water splitting, in which light-absorbing semiconductors, o en coated with additional electrocatalysts, are immersed in aqueous solutions to drive the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). Product crossover through the transparent porous separators is evaluated using a particle tracing model under the realistic operation conditions of solar water splitting devices.
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