Open access paper about Hydrogen Cryo-Adsorption Tanks
Abstract Cryoadsorption on the inner surface of porous materials is a promising solution for safe, fast, and reversible hydrogen storage. Within the class of highly porous metal−organic frameworks, zeolitic imidazolate frameworks (ZIFs) show high thermal, chemical, and mechanical stability. In this study, we selected ZIF-8 synthesized mechanochemically by twin-screw extrusion as powder and pellets. The […]
New Metrology for H2 Quality
Sustainability and dependability of fuel cells (FCs), which can be compromised by impurities present in hydrogen and air. The investigation involves quantifying how these impurities affect the performance and durability of proton-exchange membrane (PEM) FCs, both in the short term and the long term. To achieve this, tests were conducted on single PEM FC cells […]
Metrology for Reversible H2 Storage Technologies
Exploring Underground Hydrogen Storage: The potential of utilizing geological cavities and formations for storing hydrogen and the feasibility of repurposing existing natural gas storage facilities to accommodate hydrogen storage needs. Metrological and Thermodynamic Challenges: Highlighting the critical importance of safety and reliability in large-scale hydrogen storage and challenges related to accurate measurements and thermodynamic considerations. […]
Thermophysical properties of H2 and CH4/H2-mixtures
In the exploration of hydrogen’s thermophysical properties, the significance of accurate density measurements becomes evident. Equally important is the role Equations of State (EoS) play in modeling hydrogen’s behavior. In the realm of metrology, traceable density measurements are key. Enhancing EoS for precise modeling aligns with efforts to achieve metrological traceability. This involves targeting specific […]
A database to select affordable MOFs for volumetric hydrogen cryoadsorption considering the cost of their linkers
A database to select affordable MOFs for volumetric hydrogen cryoadsorption considering the cost of their linkers was introduced by CIIAE – Iberian Centre for Research in Energy Storage and Bundesanstalt für Materialforschung und -prüfung. Physical adsorption at cryogenic temperature is a reversible mechanism that can reduce the pressure of conventional compressed gas storage systems. Metal–organic framework […]
MefHySto – D1
The aim of this work (Metrology for Advanced Hydrogen Storage Solutions – MefHySto 19ENG03) is to address the need for the assessment of the quality of hydrogen produced from PEM water electrolysis during rapidly imposed transient use periods. This work focuses on quality measurements with online gas analysers for two key impurities in hydrogen (water […]
MefHySto – D2
This report describes the use of the online gas analysers, whose validation is described in the Metrology for Advanced Hydrogen Storage Solutions (MefHySto 19ENG03) D1 “Report on the development of new metrology for the measurement of key impurities in hydrogen (water vapour and oxygen) produced from PEM water electrolysers, with fast response times of a […]
MefHySto – D3
The aim of this report is to inform about the delivered scientific papers focusing on thermophysical properties of hydrogen-enriched natural gas mixtures with a hydrogen content of up to 20 % injected in the gas grids and hydrogen under geological storage conditions.
MefHySto – D4
Report on the investigation of the impact of contaminants in H2 and air contaminants on PEM Fuel Cell (FC) (reliability) and durability (sustainability) under short-term and long-term operation, including recommendations for air quality sensors needed for monitoring FC systems. This report documents the investigation of the impact of complex mixtures of impurities in hydrogen and […]
MefHySto – D5
This report describes the developed protocols for gas sampling (air and H2) and the validation of the subsequent analysis by in-tube extraction dynamic headspace coupled to gas chromatographymass spectrometry (ITEX-DHS-GC-MS) carried out at the University of A Coruña (UDC) for the determination of halogenated volatile organic compounds (VOCs). These compounds, if present in the input […]