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DOI: 10.1038/s41550-018-0664-0 29.11.2022 •Energy and Climate Versatile and Fast Methodology for Evaluation of Metallic Lithium Negative Battery Electrodes Evaluating potential electrolyte candidates is typically a lengthy procedure requiring long-term cycling experiments. To speed this process up, we have investigated potentiostatic lithium plating as a potential method for fast electrolyte suitability investigation. The applications of this methodology is not limited to liquid electrolytes, - effects of solid-state electrolytes, coatings, and other modifications can be readily assessed. 22.07.2022 •Energy and Climate High performance gas diffusion layers with added deterministic structures Hydrogen will play an important role in a future energy system based on renewable sources, providing energy storage, being a base material for industry and an energy carrier in transport applications. For the efficient electrification of hydrogen, polymer electrolyte fuel cell technology is developed and applied today in trucks, passenger cars and stationary applications. It is envisaged that even more demanding applications such as airplanes may follow. 27.04.2022 •Energy and Climate In situ spectroscopy unveils the structural changes of the sites in single atom catalysts To improve the performance of single atom catalysts (SACs), the structure of their active sites under operative conditions needs to be better understood. For this, we have performed in situ X-ray absorption spectroscopy measurements using a modulation excitation approach selectively sensitive to the species involved in the electrochemical reactions. This has allowed us to study the structural changes undergone by two types of SACs, and to tie the observed differences to their catalytic activities. 15.12.2021 "I could not imagine a better place to have done a PhD" Bernhard Pribyl-Kranewitter, former PhD student at the Energy and Environment Division, shares with us a glimpse of his time at the Paul Scherrer Institute and where his path has led him. Currently, he works as a senior consultant at Kearney. 10.07.2021 •Energy and Climate Correlation between Oxygen Vacancies and Oxygen Evolution Reaction Activity for a Model Electrode: PrBaCo2O5+δ The role of the oxygen stoichiometry of perovskite catalysts in the oxygen evolution reaction (OER) is systematically studied in the PrBaCo2O5+δ family. The reduced number of physical/chemical variables combined with in-depth characterizations such as neutron diffraction, O K-edge X-ray absorption spectroscopy(XAS), electron energy loss spectroscopy (EELS), magnetization and scanning transmission electron microscopy (STEM) studies, helps investigating the complex correlation between OER activity and a single perovskite property, such as the oxygen content. 14.01.2021 •Energy and Climate Efficient Water Electrolysis at Elevated Temperature using Commercial Cell Components Decarbonization of the energy system across different sectors using power-to-X concepts relies heavily on the availability of low-cost hydrogen produced from renewable power by water electrolysis. Polymer electrolyte water electrolysis (PEWE) is a promising technology for hydrogen (and oxygen) production for distributed as a well as centralized operation. The total cost of hydrogen is dominated by the electricity cost. Therefore, increase of conversion efficiency is pivotal in improving the commercial viability of electrolytically produced hydrogen. 31.05.2020 Zooming in on water splitting Perovskite oxynitride materials can act as effective photocatalysts for water splitting driven by visible light. A combined neutron and x-ray study now provides unique insight into the underlying processes at the solid–liquid interface and highlights how solar-to-hydrogen conversion can be improved. 30.05.2020 Zooming in on water splitting Perovskite oxynitride materials can act as effective photocatalysts for water splitting driven by visible light. A combined neutron and x-ray study now provides unique insight into the underlying processes at the solid–liquid interface and highlights how solar-to-hydrogen conversion can be improved. 02.06.2020 •Energy and Climate Membrane Lifetime Estimation in a Vanadium Redox Flow Battery using an Accelerated Stress Test A vanadium redox flow battery (VRFB) is a grid-scale energy storage device. Its energy conversion unit consists of a cell stack that comprises ion-exchange membranes to separate positive and negative electrode. The projected lifetime of a VRFB is 20 years and 7’000 charge-discharge cycles. Lifetime tests of membranes under application relevant conditions are therefore impractical, and the development of an accelerated stress test (AST) to assess the chemical stability of membranes is crucial. Prof. Dr. Jan Pieter Abrahams Telefon +41 56 310 46 12 E-Mail jan-pieter.abrahams@psi.ch LSK Publications Erste Seite « Erste Vorherige Seite ‹ Vorherige … 15 16 17 18 19 20 21 22 23 … Nächste Seite Nächste › Letzte Seite Letzte »
Laboratory for Particle Physics (LTP) Scientific Publications Detailed polarization measurements of the prompt emission of five gamma-ray bursts Zhang S, Kole M, Bao T, Batsch T, Bernasconi T, Cadoux F, Chai J, Dai Z, Dong Y, Gauvin N, Hajdas W, Lan M, Li H, Li L, Li Z, Liu J, Liu X, Marcinkowski R, Produit N, Orsi S, Pohl M, Rybka D, Shi H, Song L, Sun J, Szabelski J, Tymieniecka T, Wang R, Wang Y, Wen X, Wu B, Wu X, Wu X, Xiao H, Xiong S, Zhang L, Zhang L, Zhang X, Zhang Y, Zwolinska A Nature Astronomy , (2019). DOI: 10.1038/s41550-018-0664-0
29.11.2022 •Energy and Climate Versatile and Fast Methodology for Evaluation of Metallic Lithium Negative Battery Electrodes Evaluating potential electrolyte candidates is typically a lengthy procedure requiring long-term cycling experiments. To speed this process up, we have investigated potentiostatic lithium plating as a potential method for fast electrolyte suitability investigation. The applications of this methodology is not limited to liquid electrolytes, - effects of solid-state electrolytes, coatings, and other modifications can be readily assessed.
22.07.2022 •Energy and Climate High performance gas diffusion layers with added deterministic structures Hydrogen will play an important role in a future energy system based on renewable sources, providing energy storage, being a base material for industry and an energy carrier in transport applications. For the efficient electrification of hydrogen, polymer electrolyte fuel cell technology is developed and applied today in trucks, passenger cars and stationary applications. It is envisaged that even more demanding applications such as airplanes may follow.
27.04.2022 •Energy and Climate In situ spectroscopy unveils the structural changes of the sites in single atom catalysts To improve the performance of single atom catalysts (SACs), the structure of their active sites under operative conditions needs to be better understood. For this, we have performed in situ X-ray absorption spectroscopy measurements using a modulation excitation approach selectively sensitive to the species involved in the electrochemical reactions. This has allowed us to study the structural changes undergone by two types of SACs, and to tie the observed differences to their catalytic activities.
15.12.2021 "I could not imagine a better place to have done a PhD" Bernhard Pribyl-Kranewitter, former PhD student at the Energy and Environment Division, shares with us a glimpse of his time at the Paul Scherrer Institute and where his path has led him. Currently, he works as a senior consultant at Kearney.
10.07.2021 •Energy and Climate Correlation between Oxygen Vacancies and Oxygen Evolution Reaction Activity for a Model Electrode: PrBaCo2O5+δ The role of the oxygen stoichiometry of perovskite catalysts in the oxygen evolution reaction (OER) is systematically studied in the PrBaCo2O5+δ family. The reduced number of physical/chemical variables combined with in-depth characterizations such as neutron diffraction, O K-edge X-ray absorption spectroscopy(XAS), electron energy loss spectroscopy (EELS), magnetization and scanning transmission electron microscopy (STEM) studies, helps investigating the complex correlation between OER activity and a single perovskite property, such as the oxygen content.
14.01.2021 •Energy and Climate Efficient Water Electrolysis at Elevated Temperature using Commercial Cell Components Decarbonization of the energy system across different sectors using power-to-X concepts relies heavily on the availability of low-cost hydrogen produced from renewable power by water electrolysis. Polymer electrolyte water electrolysis (PEWE) is a promising technology for hydrogen (and oxygen) production for distributed as a well as centralized operation. The total cost of hydrogen is dominated by the electricity cost. Therefore, increase of conversion efficiency is pivotal in improving the commercial viability of electrolytically produced hydrogen.
31.05.2020 Zooming in on water splitting Perovskite oxynitride materials can act as effective photocatalysts for water splitting driven by visible light. A combined neutron and x-ray study now provides unique insight into the underlying processes at the solid–liquid interface and highlights how solar-to-hydrogen conversion can be improved.
30.05.2020 Zooming in on water splitting Perovskite oxynitride materials can act as effective photocatalysts for water splitting driven by visible light. A combined neutron and x-ray study now provides unique insight into the underlying processes at the solid–liquid interface and highlights how solar-to-hydrogen conversion can be improved.
02.06.2020 •Energy and Climate Membrane Lifetime Estimation in a Vanadium Redox Flow Battery using an Accelerated Stress Test A vanadium redox flow battery (VRFB) is a grid-scale energy storage device. Its energy conversion unit consists of a cell stack that comprises ion-exchange membranes to separate positive and negative electrode. The projected lifetime of a VRFB is 20 years and 7’000 charge-discharge cycles. Lifetime tests of membranes under application relevant conditions are therefore impractical, and the development of an accelerated stress test (AST) to assess the chemical stability of membranes is crucial.