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Scientific Highlights

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Datum
27 June 2022
Javier Pérez-Ramírez, Andras Bödi and Patrick Hemberger

Reaction insights help make sustainable liquid fuels

Methanol made from CO2 in the air can be transformed into carbon neutral fuels. New mechanistic understanding aids development of this sustainable alternative.

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17 June 2022
Figure 3

Synthesis of Metallic Lanthanide Thin Samples

This work aimed to produce intermetallic samples of platinoid metals (active metal matrix) and lanthanides (co-metal) and via the method of Coupled Reduction, i.e. a thermal treatment of the combination of the lanthanide oxide and noble metal at high temperature, as high as 1100 °C, under a constant flow of H2. We have demonstrated by means of several techniques, such as Scanning Electron Microscope, Energy Dispersive X-Ray Spectroscopy, Alpha Spectrometry and Radiographic Imaging, that this method, at defined experimental conditions (temperature, pressure and concentration) yields a metallic lanthanide thin film when using platinum as active metal matrix. Conversely, the formation of a bulk intermetallic compound was obtained when using Pd as matrix. Those systems will have applications in different nuclear physic and radiochemistry studies, such as irradiation targets for production of superheavy elements and for nuclear data determination.

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27 May 2022
Proposed mechanism for structure and gas evolution and cathode-electrolyte interfacial reactions

Stable Performance of High Capacity Cobalt-Free Li-ion Battery

Lithium-rich layered oxides, containing cobalt, despite being promising high-capacity cathode materials, need alternatives to eliminate toxic and geopolitically restricted cobalt. An ongoing search for low-cost, Co-free Li-rich cathode materials with a better structural stability lead to investigation of Li1.16Ni0.19Fe0.18Mn0.46O2 (LNFM), where cobalt is replaced by abundant iron. Our LNFM not only delivered a high capacity of 229 mAh/g but also has a stable average discharge voltage when cycled to upper cutoff potential of 4.8 V in additive-free electrolyte.

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23 May 2022
Photograph: Shutterstock

Atmospheric globe-trotters

The CLOUD experiment reveals a new mechanism by which atmospheric particles form. The particles rapidly travel the world, globally impacting cloud formation and climate.

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20 May 2022
Magnetic field lines of a He atom

Light-Induced Magnetization at the Nanoscale

Targeted manipulations of an atom's magnetic moment are tricky, as the charge currents used for this process are extremely difficult to control . Now, a consortium of collaborators in Germany, Switzerland, Slovenia and Italy reports on a solution to this problem in the cover page article of Physic Review Letters 128, Vol. 15. As it appears, the magnetization of an atomic gas can be altered by high-power lasers using a patterned wave front. The method is promising for studying and manipulating the magnetic properties of matter at the nanoscale.

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19 May 2022
Electronic nematicity in FeSe

Spin keeps electrons in line in iron-based superconductor

Electronic nematicity, thought to be an ingredient in high temperature superconductivity, is primarily spin driven in FeSe finds a study in Nature Physics.

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18 May 2022
hybrid perovskites

Mechanochromism of layered perovskites

The mechanochromism of hybrid 2D perovskites is probed at pressures compatible with practical applications

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16 May 2022
Kugellager

Things run smoother without lubricants

At the particle accelerators of PSI, the components have to withstand harsh conditions. This is why a special ball bearing that does not require grease as a lubricant has been in use since last year.

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15 May 2022
Evolution of the catalyst during the pretreatment and postulated reaction mechanism in the dry reforming of methane

In situ Study of Low-temperature Dry Reforming of Methane Over La2Ce2O7 and LaNiO3 Mixed Oxides

The combination of in situ spectroscopy methods allowed to detect the evolution of a catalyst precursor to the catalytic material, and investigate a relevant reaction. The reduction of a mixture of perovskite, pyrochlore and nickel leads to the formation of active and selective catalytst, converting carbon dioxide and methane to syngas. 

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10 May 2022
Knopp, Schnorr and Al Haddad at Maloja

New SwissFEL soft X-ray endstation welcomes first users

Maloja is go. First user experiments mark a double first, not only for the Maloja endstation but also for the second beamline of SwissFEL, Athos.

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PSI Scientific Reports

Archive 2006-2012. The Scientific Reports – containing accounts of research topics from all the different areas – provide an impression of the variety of subjects researched at PSI.

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