Ferrite-YSZ composites for solar thermochemical production of synthetic fuels: in operando characterization of CO2 reduction

2011 ◽  
Vol 21 (29) ◽  
pp. 10767 ◽  
Author(s):  
Eric N. Coker ◽  
Andrea Ambrosini ◽  
Mark A. Rodriguez ◽  
James E. Miller
Keyword(s):  
Co2 Reduction ◽  
Synthetic Fuels ◽  
In Operando ◽  
Solar Thermochemical

Spatiotemporal characterization of the field-induced insulator-to-metal transition

Science ◽  
2021 ◽  
pp. eabd9088
Author(s):  
Javier del Valle ◽  
Nicolas M. Vargas ◽  
Rodolfo Rocco ◽  
Pavel Salev ◽  
Yoav Kalcheim ◽  
...  
Keyword(s):  
Electric Field ◽  
Time Resolution ◽  
Growth Dynamics ◽  
Metallic Phase ◽  
Resistivity Change ◽  
Filament Formation ◽  
Correlated Systems ◽  
In Operando ◽  
Crucial Parameter

Many correlated systems feature an insulator-to-metal transition that can be triggered by an electric field. Although it is known that metallization takes place through filament formation, the details of how this process initiates and evolves remain elusive. We use in-operando optical reflectivity to capture the growth dynamics of the metallic phase with space and time resolution. We demonstrate that filament formation is triggered by nucleation at hotspots, with a subsequent expansion over several decades in time. By comparing three case studies (VO2, V3O5 and V2O3), we identify the resistivity change across the transition as the crucial parameter governing this process. Our results provide a spatiotemporal characterization of volatile resistive switching in Mott insulators, key for emerging technologies such as optoelectronics or neuromorphic computing.

In-Operando AFM Characterization of Mechanical Property Evolution of Si Anode Binders in Liquid Electrolyte

2020 ◽  
Vol 3 (2) ◽  
pp. 1899-1907 ◽  
Author(s):  
Michael Lee ◽  
Rahul Kumar Raghava Reddi ◽  
Junbin Choi ◽  
Jian Liu ◽  
Xiaosong Huang ◽  
...  
Keyword(s):  
Mechanical Property ◽  
Liquid Electrolyte ◽  
Si Anode ◽  
In Operando

Chemical class separation and characterization of organic compounds in synthetic fuels

1981 ◽  
Vol 53 (11) ◽  
pp. 1612-1620 ◽  
Author(s):  
Douglas W. Later ◽  
Milton L. Lee ◽  
Keith D. Bartle ◽  
Robert C. Kong ◽  
Daniel L. Vassilaros
Keyword(s):  
Organic Compounds ◽  
Synthetic Fuels ◽  
Class Separation ◽  
Chemical Class

Mechanistic Insights on CO2 Reduction Reactions at Platinum/[BMIM][BF4] Interfaces from In Operando Spectroscopy

ACS Catalysis ◽  
2019 ◽  
Vol 9 (7) ◽  
pp. 6284-6292 ◽  
Author(s):  
Andre Kemna ◽  
Natalia García Rey ◽  
Björn Braunschweig
Keyword(s):  
Co2 Reduction ◽  
Operando Spectroscopy ◽  
Reduction Reactions ◽  
In Operando

scholarly journals Multi-analyser detector (MAD) for high-resolution and high-energy powder X-ray diffraction

2021 ◽  
Vol 28 (1) ◽  
pp. 146-157
Author(s):  
Alexander Schökel ◽  
Martin Etter ◽  
Andreas Berghäuser ◽  
Alexander Horst ◽  
Dirk Lindackers ◽  
...  
Keyword(s):  
High Resolution ◽  
Signal To Noise Ratio ◽  
High Energy ◽  
High Signal ◽  
X Ray Diffraction ◽  
Stepper Motors ◽  
In Operando ◽  
Characterization Of Materials

For high-resolution powder diffraction in material science, high photon energies are necessary, especially for in situ and in operando experiments. For this purpose, a multi-analyser detector (MAD) was developed for the high-energy beamline P02.1 at PETRA III of the Deutsches Elektronen-Synchrotron (DESY). In order to be able to adjust the detector for the high photon energies of 60 keV, an individually adjustable analyser–crystal setup was designed. The adjustment is performed via piezo stepper motors for each of the ten channels. The detector shows a low and flat background as well as a high signal-to-noise ratio. A range of standard materials were measured for characterizing the performance. Two exemplary experiments were performed to demonstrate the potential for sophisticated structural analysis with the MAD: (i) the structure of a complex material based on strontium niobate titanate and strontium niobate zirconate was determined and (ii) an in situ stroboscopy experiment with an applied electric field on a highly absorbing piezoceramic was performed. These experiments demonstrate the capabilities of the new MAD, which advances the frontiers of the structural characterization of materials.

scholarly journals Future-Oriented Experimental Characterization of 3D Printed and Conventional Elastomers Based on Their Swelling Behavior

Polymers ◽  
2021 ◽  
Vol 13 (24) ◽  
pp. 4402
Author(s):  
Klara Loos ◽  
Vivianne Marie Bruère ◽  
Benedikt Demmel ◽  
Yvonne Ilmberger ◽  
Alexander Lion ◽  
...  
Keyword(s):  
Tensile Tests ◽  
Swelling Behavior ◽  
Uniaxial Tensile ◽  
Stress And Strain ◽  
Experimental Characterization ◽  
Synthetic Fuels ◽  
Fuel Component ◽  
3D Printed ◽  
Fuel Components

The present study investigates different elastomers with regard to their behavior towards liquids such as moisture, fuels, or fuel components. First, four additively manufactured materials are examined in detail with respect to their swelling in the fuel component toluene as well as in water. The chemical nature of the materials is elucidated by means of infrared spectroscopy. The experimentally derived absorption curves of the materials in the liquids are described mathematically using Fick’s diffusion law. The mechanical behavior is determined by uniaxial tensile tests, which are evaluated on the basis of stress and strain at break. The results of the study allow for deriving valuable recommendations regarding the printing process and postprocessing. Second, this article investigates the swelling behavior of new as well as thermo-oxidatively aged elastomers in synthetic fuels. For this purpose, an analysis routine is presented using sorption experiments combined with gas chromatography and mass spectrometry and is thus capable of analyzing the swelling behavior multifacetted. The transition of elastomer constituents into the surrounding fuel at different aging and sorption times is determined precisely. The change in mechanical properties is quantified using density measurements, micro Shore A hardness measurements, and the parameters stress and strain at break from uniaxial tensile tests.

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