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Published at the Journal of Physical Chemistry – Solar Thermochemical Redox Cycling Using Ga- and Al-Doped LSM Perovskites for Renewable Hydrogen Production

Abstract Solar thermochemical hydrogen production using redox-active metal oxides is a promising pathway for the production of green hydrogen and synthetic fuel precursors. Herein, the perovskite material (La0.6Sr0.4)0.95Mn0.8Ga0.2O3−δ (LSMG6482) is identified as a promising metal oxide for thermochemical water splitting. LSMG6482, along with more-established water splitters ceria and (La0.6Sr0.4)0.95MnxAl1–xO3−δ (LSMA) perovskites, is experimentally characterized via …

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100-hour thermal energy storage in sand begins NREL demo

NREL ETES long-duration thermal energy storage – IMAGE ©NREL Four years ago, researchers at the National Renewable Energy Laboratory (NREL) won Department of Energy (DOE) ARPA-E funding to invent a new long-duration thermal energy storage technology able to discharge heat or power for 100 hours. The goal was to devise long-duration storage with a storage …

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Published at Royal Society of Chemistry – Thermochemical production of ammonia via a two-step metal nitride cycle – materials screening and the strontium-based system

Abstract Ammonia synthesis via the catalytic Haber–Bosch process is characterized by its high pressures and low single-pass conversions, as well as by the energy-intensive production of the precursors H2 and N2 and their concomitant greenhouse gas emissions. Alternatively, thermochemical cycles based on metal nitrides stand as a promising pathway to green ammonia production because they …

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DLR researchers win ASME Best Paper Award

We are pleased to share that this year the “𝗢𝘂𝘁𝘀𝘁𝗮𝗻𝗱𝗶𝗻𝗴 𝗣𝗮𝗽𝗲𝗿 𝗔𝘄𝗮𝗿𝗱” from the ASME (The American Society of Mechanical Engineers) goes to a team at our institute! This was announced during the 18th International hashtag#Conference on Energy Sustainability in Anaheim, USA. The hashtag#award aims to promote high quality research in the field of energy …

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Published at Applied Energy – Systematic assessment for an integrated hydrogen approach towards the cross-regional application considering solar thermochemical and methanol carrier

Abstract Hydrogen holds promise as a clean energy carrier, but its industrial utilization is currently constrained by the challenges of green production and efficient cross-regional delivery. To this end, a novel integrated hydrogen energy system considering the solar-driven biomass gasification and liquid organic hydrogen storage was developed in this work. In the newly developed system, …

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Published at Journal of the American Chemical Society – Chemical Potential Analysis as an Alternative to the van’t Hoff Method: Hypothetical Limits of Solar Thermochemical Hydrogen

Abstract The van’t Hoff method is a standard approach for determining reaction enthalpies and entropies, e.g., in the thermochemical reduction of oxides, which is an important process for solar thermochemical fuels and numerous other applications. However, by analyzing the oxygen partial pressure pO2, e.g., as measured by thermogravimetric analysis (TGA), this method convolutes the properties …

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IRA incentives for clean energy from idle oil wells

IRA incentives for thermal storage in idle oil wells IMAGE©Geo2Watts Climate policy in the US Inflation Reduction Act (IRA) provides powerful incentives to generate renewable energy and phase out fossil fuel production. Oil and gas companies are already required to cap boreholes when an oil well is depleted, to meet Asset Retirement Obligations (ARO). But …

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Termotanques solares, una puerta a la transición energética en Argentina

La energía termosolar en Argentina es la que mayor potencial energético y tecno-productivo tiene, según explicó Diego Roger en su trabajo “Una nueva matriz energética para Argentina: rentas termodinámicas y desarrollo industrial, tecnológico y científico”. “Las tecnologías eólica y termosolar, además de tratarse de recursos renovables de gran magnitud y que se encuentran en procesos …

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Completed! Redstone Tower CSP project in South Africa is online

Redstone, the first Tower CSP plant in South Africa is completed. This image taken August 20, 2024 shows how the solar receiver atop the tower is activated by the reflected sunlight from the solar field of heliostats (mirrors) surrounding the power block seen here below the tower: IMAGE©Xinhua (by Zhang Yudong) [Ed: Finally, the Redstone …

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Ovejas entre heliostatos

La planta termosolar de Heineken España, situada en Sevilla y en la que participa Engie, ha recurrido al desbroce natural, con las ovejas como protagonistas, para mantener este espacio en las mejores condiciones de forma sostenible. Gracias a esta solución se evitan otras opciones agresivas con el medio ambiente, como el uso de productos fitosanitarios, …

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