Theoretical and experimental analysis of an asymmetric high pressure PEM water electrolyser up to 155 bar

Sartory, Markus; Wallnöfer-Ogris, Eva; Salman, Patrick; Fellinger, Thomas; Justl, Markus; Trattner, Alexander; Klell, Manfred

doi:10.1016/j.ijhydene.2017.10.112

Cited by 54 publications

(14 citation statements)

References 33 publications

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“…In order to store hydrogen at a pressure of between 30 and 800 bar [10,11], this paper discusses whether the gas should be compressed electrochemically in the electrolyzer or by subsequent gas compression. At the system level, it is desired to increase the pressure in the electrolysis cell to reduce the number of compressors needed to store hydrogen at higher pressure as costs and system complexity decrease [12]. On a functional layer level, hydrogen permeation across the membrane will increase when increasing the pressure in the electrodes [13].…”

Section: Of 21mentioning

confidence: 99%

Improving the Efficiency of PEM Electrolyzers through Membrane-Specific Pressure Optimization

Scheepers

Stähler

et al. 2020

Energies

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Hydrogen produced in a polymer electrolyte membrane (PEM) electrolyzer must be stored under high pressure. It is discussed whether the gas should be compressed in subsequent gas compressors or by the electrolyzer. While gas compressor stages can be reduced in the case of electrochemical compression, safety problems arise for thin membranes due to the undesired permeation of hydrogen across the membrane to the oxygen side, forming an explosive gas. In this study, a PEM system is modeled to evaluate the membrane-specific total system efficiency. The optimum efficiency is given depending on the external heat requirement, permeation, cell pressure, current density, and membrane thickness. It shows that the heat requirement and hydrogen permeation dominate the maximum efficiency below 1.6 V, while, above, the cell polarization is decisive. In addition, a pressure-optimized cell operation is introduced by which the optimum cathode pressure is set as a function of current density and membrane thickness. This approach indicates that thin membranes do not provide increased safety issues compared to thick membranes. However, operating an N212-based system instead of an N117-based one can generate twice the amount of hydrogen at the same system efficiency while only one compressor stage must be added.

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Section: Of 21mentioning

confidence: 99%

Improving the Efficiency of PEM Electrolyzers through Membrane-Specific Pressure Optimization

Scheepers

Stähler

et al. 2020

Energies

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“…Next to different possibilities for production and storage, there are also several approaches how to design the infrastructure depending on the application. Several parameters have to be considered when planning a hydrogen infrastructure 28–32: amount, pressure level, quality of hydrogen, central or decentral application, electricity generation, operation strategies. …”

Section: Usage – Modular Infrastructuresmentioning

confidence: 99%

“…[18] 4 Usage -Modular Infrastructures Next to different possibilities for production and storage, there are also several approaches how to design the infrastructure depending on the application. Several parameters have to be considered when planning a hydrogen infrastructure [28][29][30][31][32]: -amount, pressure level, quality of hydrogen, -central or decentral application, electricity generation, operation strategies. Uneconomic operation of actual infrastructure concepts is mainly caused by high investment costs, high operating costs and the low system utilization in the market launch phase as well as the lack of flexibility in terms of expandability of the considered infrastructure.…”

Section: Storage and Distributionmentioning

confidence: 99%

Renewable Hydrogen: Modular Concepts from Production over Storage to the Consumer

Trattner

Höglinger²,

Macherhammer³

et al. 2021

Chemie Ingenieur Technik

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A simulation tool called HYDRA to optimize individual hydrogen infrastructure layouts is presented. The different electrolyzer technologies, namely proton exchange membrane electrolysis, anion exchange membrane electrolysis, alkaline electrolysis, and solid oxide electrolysis, as well as hydrogen storage possibilities are described in more detail and evaluated. To illustrate the application opportunities of HYDRA, three project examples are discussed. The examples include central and decentral applications while taking the usage of hydrogen into account.

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“…Müller et al [ 16 ] studied different temperatures (60, 70, 80 and 90 °C) and drag coefficients (1.0, 1.5, 2.0, 2.5) and the transmission relationship between Nafion membrane thickness and water spreading. Sartory et al [ 17 ] operated water electrolyzer under different working conditions, the result showed that the higher the temperature was, the higher was the hydrogen production efficiency. Fujimura et al [ 18 ] studied the influence of surface wettability on hydrogen evolution reaction (HER) activity and efficiency.…”

Section: Introductionmentioning

confidence: 99%

PEMWE with Internal Real-Time Microscopic Monitoring Function

Lee

Chen²,

Jung

et al. 2021

Membranes

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In recent years, various countries have been paying attention to environmental protection issues, believing that climate change is the main challenge to the developed countries’ energy policies. The most discussed solution is renewable energy. The energy storage system can reduce the burden of the overall power system of renewable energy. The hydrogen energy is one of the optimal energy storage system options of renewable energy at present. According to these policies and the future trend, this study used micro-electro-mechanical systems (MEMS) technology to integrate micro voltage, current, temperature, humidity, flow and pressure sensors on a 50 μm thick polyimide (PI) substrate. After the optimization design and process optimization, the flexible six-in-one microsensor was embedded in the proton exchange membrane water electrolyzer (PEMWE) for internal real-time microscopic monitoring.

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Theoretical and experimental analysis of an asymmetric high pressure PEM water electrolyser up to 155 bar

Cited by 54 publications

References 33 publications

Improving the Efficiency of PEM Electrolyzers through Membrane-Specific Pressure Optimization

Improving the Efficiency of PEM Electrolyzers through Membrane-Specific Pressure Optimization

Renewable Hydrogen: Modular Concepts from Production over Storage to the Consumer

PEMWE with Internal Real-Time Microscopic Monitoring Function

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