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The use of metathesis, or ionic double displacement reactions, for the synthesis of layered copper oxyselenides is explored, and compared to the conventional solid state reaction approach across a range of temperatures. We have determined that metathesis does offer some advantages in product selectivity at low temperature but due to more complex synthetic requirements does not warrant more widespread adoption.
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http://dx.doi.org/10.1039/d5mh01350j | DOI Listing |
ISME J
September 2025
Department of Functional and Evolutionary Ecology, Archaea Biology and Ecogenomics Unit, University of Vienna, Djerassiplatz 1, 1030 Vienna, Austria.
Although ammonia-oxidizing archaea (AOA) are globally distributed in nature, growth in biofilms has been relatively little explored. Here we investigated six representatives of three different terrestrial and marine clades of AOA in a longitudinal and quantitative study for their ability to form biofilm, and studied gene expression patterns of three representatives. Although all strains grew on a solid surface, soil strains of the genera Nitrosocosmicus and Nitrososphaera exhibited the highest capacity for biofilm formation.
View Article and Find Full Text PDFNat Mater
September 2025
Frontiers Science Center for Transformative Molecules, State Key Laboratory of Synergistic Chem-Bio Synthesis, School of Chemistry and Chemical Engineering, Zhangjiang Institute for Advanced Study, Shanghai Jiao Tong University, Shanghai, China.
Anode-free lithium (Li) metal batteries are promising candidates for high-performance energy storage applications. Nonetheless, their translation into practical applications has been hindered by the slow kinetics and reversibility of Li plating and stripping on copper foils. Here we report a two-dimensional polyamide (2DPA)/lithiated Nafion (LN) interphase layer for anode-free Li metal batteries.
View Article and Find Full Text PDFACS Omega
September 2025
Department of Physics, Birla Institute of Technology and Science, Pilani, Pilani Campus, Vidya Vihar, Pilani, Rajasthan 333031, India.
We report the performance of solid-state ceramic supercapacitors (SSCs) based on a novel composite electrolyte comprising aluminum-doped lithium lanthanum titanate perovskite, LiLaTiAlO (Al-doped LLTO), and the ionic liquid 1-ethyl-3-methylimidazolium tetrafluoroborate (EMIM BF). Rietveld refinement of X-ray diffraction data confirms the preservation of the tetragonal perovskite phase after Al substitution, indicating structural stability of the host lattice. X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy further corroborate the successful incorporation of Al without forming secondary phases.
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September 2025
Materials and Manufacturing Directorate, AFRL/RXEE, Air Force Research Laboratory, Wright-Patterson AFB, Ohio 45433, United States.
This study addresses a critical limitation in direct bonded copper (DBC) materials used in power electronics by introducing a copper-zirconium (Cu/Zr) alloy interposing layer at the copper-ceramic interface. This novel design aims to mitigate mechanical stress induced by mismatched material properties, such as the coefficient of thermal expansion (CTE) and elastic modulus, during thermal cycling. The key findings of this study are (1) thermal fatigue improvement: Test samples with the Cu/Zr interface layer (Cu-Cu/Zr-AlN) three times enhanced thermal fatigue resistance, surviving 30 thermal cycles from -55 to 300 °C before delamination, while standard DBC substrates without the Cu/Zr layer failed after just 10 cycles, indicating a performance improvement with the Cu/Zr alloy, (2) durability projections: Based on the Coffin-Manson model, if the upper temperature is capped at 150 °C, the Cu-Cu/Zr-AlN substrates are projected to survive approximately 1372 cycles, underscoring their potential for long-term reliability, and (3) stress mitigation: The Cu/Zr alloy layer bridges the CTE disparity between copper and ceramic, reducing mechanical stress and improving structural integrity across a broad temperature range (-55 to 300 °C).
View Article and Find Full Text PDFRSC Adv
August 2025
Solid-State Physics Department, Physics Research Institute, National Research Centre 33 El Bohouth St., Dokki Giza 12622 Egypt
Aluminum-doped copper indium gallium selenide/sulfide (CIGAS) is a favorable absorber material for solar cell applications; however, the number of reports on CIGAS solar cells currently remains limited. In this study, we therefore employed SCAPS-1D software for the theoretical modeling of CIGAS thin film solar cells and investigated the effect of material properties and device configurations on solar cell photovoltaic (PV) parameters. Initially, key parameters such as thickness and charge carrier concentrations of each layer used in CIGAS PV devices were studied and optimized to obtain suitable conditions for high device performance.
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