Solar heat integrated solid oxide steam electrolysis for highly efficient hydrogen production

Schiller, Günter; Lang, Michael; Szabo, Patric; Monnerie, Nathalie; Storch, Henrik von; Reinhold, Jan Philipp; Sundarraj, Pradeepkumar

doi:10.1016/j.jpowsour.2019.01.059

Cited by 92 publications

(27 citation statements)

References 18 publications

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“…These losses were on average 5.7% of gross generation in all of the base scenarios and decrease to 4.3% in Variant 1 and 3.5% in Variant 2. Furthermore, the use of pumped hydro storage (as short-term storage) is low overall (8)(9)(10) TWh per year generation in base scenarios without RE limits) and decline with the availability of flexible hydrogen generation capacities (5)(6)(7)(8) TWh per year in Variant 2 scenarios without RE limits). Compared to that, the use of combined cycle gas turbines (CCGT) for hydrogen re-conversion into electricity (as long-term storage) is consistently higher, depending on the expansion of the electrolysers and hydrogen storage facilities of renewables and grid transfer capacities.…”

Section: Resultsmentioning

confidence: 99%

“…Moreover, at high temperatures part of the required energy for water splitting can be provided by heat from external sources. The maximum amount of heat ∆Q max to be integrated into the electrolysis process is given by the difference between the enthalpy of water splitting ∆H 0 and the Gibbs free enthalpy ∆G 0 , thus reducing the necessary electrical energy ε min [6]. Figure 6 schematically shows the experimental setup of the prototype system and Figure 7 the setup of the system in operation.…”

Section: Approach and Assumptionsmentioning

confidence: 99%

“…Figure 6. Schematic of the experimental system according to [6]. Figure 7 the setup of the system in operation.…”

Section: Approach and Assumptionsmentioning

confidence: 99%

“…Solar thermochemical redox cycles and high-temperature electrolysis with integration of solar heat are promising processes for the production of hydrogen or syngas, which can be further processed into synthetic fuels. The coupling of a commercial high-temperature steam electrolyser with a solarthermal steam generator has been demonstrated for the first time [6].The third subproject investigates the role of synthetic fuels as designer fuels for aviation. The work focuses on fuel specifications, as well as criteria and concepts for the design of alternative aviation Energies 2020, 13, 138 3 of 36 turbine fuels.…”

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confidence: 99%

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Future Fuels—Analyses of the Future Prospects of Renewable Synthetic Fuels

et al. 2019

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The Future Fuels project combines research in several institutes of the German Aerospace Center (DLR) on the production and use of synthetic fuels for space, energy, transportation, and aviation. This article gives an overview of the research questions considered and results achieved so far and also provides insight into the multidimensional and interdisciplinary project approach. Various methods and models were used which are embedded in the research context and based on established approaches. The prospects for large-scale fuel production using renewable electricity and solar radiation played a key role in the project. Empirical and model-based investigations of the technological and cost-related aspects were supplemented by modelling of the integration into a future electricity system. The composition, properties, and the related performance and emissions of synthetic fuels play an important role both for potential oxygenated drop-in fuels in road transport and for the design and certification of alternative aviation fuels. In addition, possible green synthetic fuels as an alternative to highly toxic hydrazine were investigated with different tools and experiments using combustion chambers. The results provide new answers to many research questions. The experiences with the interdisciplinary approach of Future Fuels are relevant for the further development of research topics and co-operations in this field.Synthetic fuels based on renewable energies (RE) are widely seen as a key element to achieving climate-neutral transport (e.g., [1,2]). As liquid hydrocarbons have a high energy and power density, they are primarily discussed as fuels for (heavy) road vehicles, ships, and aircraft. Due to their low storage and transport losses, they are also conceivable as a complementary long-term electricity storage option [3]. The challenges of producing and implementing these fuels are manifold. Chemical processes and renewable electrical or thermal energy can be used to produce liquid hydrocarbons from various carbon sources and hydrogen (and sometimes oxygen). Synthetic fuels have several advantages: they can be easily integrated into our existing energy and mobility infrastructures, can be used in all areas of the transport sector, and they can be optimized with regard to their chemical properties. The main disadvantages are the high energy losses and production costs.In this research context, eleven research groups at the German Aerospace Center (DLR) are working together on the Future Fuels project on synthetic fuels. The aim of the interdisciplinary approach is to realize synergies and joint research activities, as well as new research impulses through different perspectives. The scientists and engineers are investigating how synthetic fuels can be produced using solar energy and electrolysis processes (Solar Fuels), and are developing concepts for the re-conversion of these fuels into electricity. They are working on emission-optimized fuels for transport and aviation (Designer Fuels), as well as advanced space ap...

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Section: Resultsmentioning

confidence: 99%

Section: Approach and Assumptionsmentioning

confidence: 99%

“…Figure 6. Schematic of the experimental system according to [6]. Figure 7 the setup of the system in operation.…”

Section: Approach and Assumptionsmentioning

confidence: 99%

mentioning

confidence: 99%

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confidence: 99%

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Future Fuels—Analyses of the Future Prospects of Renewable Synthetic Fuels

et al. 2019

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Challenges and Advancements in the Electrochemical Utilization of Ammonia Using Solid Oxide Fuel Cells

Zhang,

Xu,

et al. 2024

Advanced Materials

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Solid oxide fuel cells utilized with NH3 (NH3−SOFCs) have great potential to be environmentally friendly devices with high efficiency and energy density. The advancement of this technology is hindered by the sluggish kinetics of chemical or electrochemical processes occurring on anodes/catalysts. Extensive efforts have been devoted to developing efficient and durable anode/catalysts in recent decades. Although modifications to the structure, composition, and morphology of anodes or catalysts are effective, the mechanistic understandings of performance improvements or degradations remain incompletely understood. This review informatively commences by summarizing existing reports on the progress of NH3−SOFCs. It subsequently outlines the influence of factors on the performance of NH3−SOFCs. The degradation mechanisms of the cells/systems are also reviewed. Lastly, the persistent challenges in designing highly efficient electrodes/catalysts for low‐temperature NH3−SOFCs, and future perspectives derived from SOFCs are discussed. Notably, durability, thermal cycling stability, and power density are identified as crucial indicators for enhancing low‐temperature (550 °C or below) NH3−SOFCs. This review aims to offer an updated overview of how catalysts/electrodes affect electrochemical activity and durability, offering critical insights for improving performance and mechanistic understanding, as well as establishing the scientific foundation for the design of electrodes for NH3−SOFCs.

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Technologische Pfade für die Herstellung von komprimiertem und hochreinem Wasserstoff mit Hilfe von Sonnenenergie

et al. 2023

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Übersetzung wird gemeinsam mit der endgültigen englischen Fassung erscheinen. Die endgültige englische Fassung (Version of Record) wird ehestmöglich nach dem Redigieren und einem Korrekturgang als Early-View-Beitrag erscheinen und kann sich naturgemäß von der AA-Fassung unterscheiden. Leser sollten daher die endgültige Fassung, sobald sie veröffentlicht ist, verwenden. Für die AA-Fassung trägt der Autor die alleinige Verantwortung.

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Solar heat integrated solid oxide steam electrolysis for highly efficient hydrogen production

Cited by 92 publications

References 18 publications

Future Fuels—Analyses of the Future Prospects of Renewable Synthetic Fuels

Future Fuels—Analyses of the Future Prospects of Renewable Synthetic Fuels

Challenges and Advancements in the Electrochemical Utilization of Ammonia Using Solid Oxide Fuel Cells

Technologische Pfade für die Herstellung von komprimiertem und hochreinem Wasserstoff mit Hilfe von Sonnenenergie

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