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- W4310137370 abstract "In this work, a partial element stage cut electrochemical hydrogen pump (EHP) model for the separation of multiple H2-contaning gases and hydrogen compression was proposed to realize fast prediction of the EHP’s performance (nearly 10 s for one IEHP–E point). Three real factors, namely, anode impurity diffusion, hydrogen back-diffusion and anode catalyst deactivation, were embedded into the model. The model accuracy was verified for four aspects (current density distribution, polarization curve, hydrogen recovery and purity) under four feedstock systems (H2/N2, H2/CH4, H2/He and H2/CO2) and a wide cathode pressure range of 0.1–1.0 MPa. The model had good accuracy (R2≥0.90). Benefiting from the embedding of the real factor of the hydrogen back-diffusion, hydrogen back-diffusion ratio was simulated accurately under a wide cathode pressure range of 0.13–20 MPa. By considering the dual- effect on current density caused by PEM proton conduction and GDL mass transformation resistance, optimal region of hydrogen recovery rate, energy efficiency and hydrogen purity can be simulated. About 64 % and 53 % for hydrogen recovery rate and energy efficiency can be achieved under low hydrogen feedstock of 20 mol%. In summary, it is promising to realize the “hydrogen economy” in the future under the utilization of EHP." @default.
- W4310137370 created "2022-11-30" @default.
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- W4310137370 date "2023-02-01" @default.
- W4310137370 modified "2023-10-16" @default.
- W4310137370 title "A partial element stage cut electrochemical hydrogen pump model for hydrogen separation and compression" @default.
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- W4310137370 doi "https://doi.org/10.1016/j.seppur.2022.122790" @default.
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