Effect of relative humidity and temperature on the performance of an electrochemical hydrogen compressor

Pineda-Delgado, J.L.; Chávez-Ramírez, A.U.; B, Cynthia K. Gutierrez; Rivas, S.; Marisela, Cruz-Ramírez; Hernández-Cortes, Ramiro de Jesús; Menchaca-Rivera, J.A.; Pérez-Robles, J.F.

doi:10.1016/j.apenergy.2022.118617

Cited by 24 publications

(3 citation statements)

References 40 publications

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“…Their study only considered the relative humidity and membrane thickness and not the effect of the temperature and GDL porosity together [ 24 ]. In an EHC, hydrogen must be supplied with sufficient hydration [ 25 ]. Zavala et al designed a sulfonated poly (ether-ether ketone, SPEEK) membrane with an increased proton conductivity from 0.014 to 0.027

and a high water retention capacity [ 26 ].…”

Section: Introductionmentioning

confidence: 99%

Minimizing Area-Specific Resistance of Electrochemical Hydrogen Compressor under Various Operating Conditions Using Unsteady 3D Single-Channel Model

Gong

Jin

2023

Membranes

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Extensive research has been conducted over the past few decades on carbon-free hydrogen energy. Hydrogen, being an abundant energy source, requires high-pressure compression for storage and transportation due to its low volumetric density. Mechanical and electrochemical compression are two common methods used to compress hydrogen under high pressure. Mechanical compressors can potentially cause contamination due to the lubricating oil when compressing hydrogen, whereas electrochemical hydrogen compressors (EHCs) can produce high-purity, high-pressure hydrogen without any moving parts. A study was conducted using a 3D single-channel EHC model focusing on the water content and area-specific resistance of the membrane under various temperature, relative humidity, and gas diffusion layer (GDL) porosity conditions. Numerical analysis demonstrated that the higher the operating temperature, the higher the water content in the membrane. This is because the saturation vapor pressure increases with higher temperatures. When dry hydrogen is supplied to a sufficiently humidified membrane, the actual water vapor pressure decreases, leading to an increase in the membrane’s area-specific resistance. Furthermore, with a low GDL porosity, the viscous resistance increases, hindering the smooth supply of humidified hydrogen to the membrane. Through a transient analysis of an EHC, favorable operating conditions for rapidly hydrating membranes were identified.

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and a high water retention capacity [ 26 ].…”

Section: Introductionmentioning

confidence: 99%

Minimizing Area-Specific Resistance of Electrochemical Hydrogen Compressor under Various Operating Conditions Using Unsteady 3D Single-Channel Model

Gong

Jin

2023

Membranes

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“…Numerous types of compressors are then developed for the hydrogen compression applied in the hydrogen refuelling station, which include the reciprocating compressor, 10 diaphragm compressor, 11 ionic liquid compressor, 12 metal hydride compressor, 13 electrochemical compressor, 14 and adsorption compressor 15 . Among these compression technologies, the ionic liquid compressor is regarded as the most promising compression technology for the hydrogen refuelling station due to the combined application of ionic liquid and hydraulic driving systems.…”

Section: Introductionmentioning

confidence: 99%

Mathematical modelling and design of the ionic liquid compressor for the hydrogen refuelling station

Guo

Wang

Liu³

et al. 2022

Intl J of Energy Research

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Summary The ionic liquid compressor is regarded as the most promising compression technology for the hydrogen refuelling station due to the combined application of ionic liquid and the hydraulic driving system. However, the design, mathematical and experimental investigations of the ionic compressor are still absent from the open literature. This paper proposed a new structure design and the design methodology of the ionic liquid compressor. The mathematical modelling considering the valve dynamics was provided for simulating the thermodynamic process, which was verified by the experimental data. The results showed that the delayed closing of the discharge valve would take place due to a high or low stiffness of the valve. The increase in the stiffness alleviated the rebound issue of the suction valve. An increase in the stroke to diameter ratio could solve the rebound issue of the discharge valve. A low or high trajectory coefficient would cause an intense rebound during the closing procedure of the discharge valve. The designed results of the main parameters of the compressor based on the simulation were the suction valve stiffness of 100 N/m, the discharge valve stiffness of 500 N/m, the stroke to diameter ratio of 1.0, and the trajectory coefficient of 0.125 under the given design condition.

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“…Martinez et al [13] confirmed the dynamic process of water variation inside and outside the PEM in real time. Pineda-Delgado et al [14] investigated the influence of RH and temperature on the performance of an electrochemical hydrogen compressor working as a PEMFC. They found that low RH and high temperature gave rise to a diminution of the proton conductivity by dehydrating of membrane, thus enhancing the backdiffusion toward the anode.…”

Section: Introductionmentioning

confidence: 99%

Modeling and Experimental Investigation of the Anode Inlet Relative Humidity Effect on a PEM Fuel Cell

Zhang

Liu

et al. 2022

Energies

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External humidification has been used as a flexible water management strategy for the proton exchange membrane fuel cell (PEMFC). To study the anode inlet relative humidity (ARH) effect on the performance of PEMFC, the anode inlet water content (AIWC) model is established, including condensation rates and water activity. A comparable analysis between the AIWC model, Fluent model and experiment is conducted at 60 °C operating temperature, four different anode relative humidities (25%, 50%, 75% and 100%), and 100% cathode relative humidity (CRH). The species distributions of water content and hydrogen concentration are presented and analyzed. The results show the relative error of the voltage results derived from the AIWC model has been reduced by 3.2% (the original is 4.6% in the Fluent model) especially at 240 mA·cm−2 for 50% ARH. An increase in hydrogen humidity can improve the PEMFC output at low ARH (25% and 50%). Meanwhile, at high ARH (100%), the excess water produced does not play a positive role. At 50% ARH, the water content and hydrogen distribution are more uniform all over the anode channels.

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Effect of relative humidity and temperature on the performance of an electrochemical hydrogen compressor

Cited by 24 publications

References 40 publications

Minimizing Area-Specific Resistance of Electrochemical Hydrogen Compressor under Various Operating Conditions Using Unsteady 3D Single-Channel Model

Minimizing Area-Specific Resistance of Electrochemical Hydrogen Compressor under Various Operating Conditions Using Unsteady 3D Single-Channel Model

Mathematical modelling and design of the ionic liquid compressor for the hydrogen refuelling station

Modeling and Experimental Investigation of the Anode Inlet Relative Humidity Effect on a PEM Fuel Cell

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