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Easily Water-Synthesisable Iron-Chloranilate Frameworks as High Energy and High-Power Cathodes for Sustainable Alkali-Ion Batteries.
Angew Chem Int Ed Engl
January 2025
Universidad Complutense de Madrid Facultad de Ciencias Quimicas, Inorganic Chemistry Department, 28034, Madrid, SPAIN.
Achieving high battery performance from low-cost, easily synthesisable electrode materials is crucial for advancing energy storage technologies. Metal organic frameworks (MOFs) combining inexpensive transition metals and organic ligands are promising candidates for high-capacity cathodes. Iron-chloranilate-water frameworks are herein reported to be produced in aqueous media under mild conditions.
View Article and Find Full Text PDFEnhancing Catalytic Removal of Autoexhaust Soot Particles via the Modulation of Interfacial Oxygen Vacancies in Cu/CeO Catalysts.
Environ Sci Technol
January 2025
State Key Laboratory of Heavy Oil Processing, Key Laboratory of Optical Detection Technology for Oil and Gas, College of Science, China University of Petroleum, Beijing 102249, PR China.
The purification efficiency of autoexhaust carbon strongly depends on the heterogeneous interface structure between active metal and oxide, which can modulate the local electronic structure of defect sites to promote the activation of reactant molecules. Herein, the high-dispersion CuO clusters supported on the well-defined CeO nanorods were prepared using the complex deposition slow method. The formation of heteroatomic Cu-O-Ce interfacial structural units as active sites can capture electrons to achieve activation of the NO and O molecules.
View Article and Find Full Text PDFCrystal-level timing calibration using cascaded photons ofCo point source for long axial animal PET system.
Phys Med Biol
January 2025
Institute of High Energy Physics Chinese Academy of Sciences, 19B Yuquan Road, Shijingshan District, Beijing, Beijing, Beijing, 100049, CHINA.
Objective: Timing calibration is essential for positron emission tomography (PET) system as it enhances timing resolution to improve image quality. Traditionally, positron sources are employed for timing calibration. However, the photons emitted by these sources travel in opposite directions, necessitating that positrons annihilate at multiple locations to collect coincidence data across a greater number of lines of response (LORs).
View Article and Find Full Text PDFBreaking Anionic Solvation Barrier for Safe and Durable Potassium-ion Batteries Under Ultrahigh-Voltage Operation.
Angew Chem Int Ed Engl
January 2025
Northeast Normal University, Faculty of Chemistry, Remin Street 5268, 130024, Changchun, CHINA.
Ultrahigh-voltage potassium-ion batteries (PIBs) with cost competitiveness represent a viable route towards high energy battery systems. Nevertheless, rapid capacity decay with poor Coulombic efficiencies remains intractable, mainly attributed to interfacial instability from aggressive potassium metal anodes and cathodes. Additionally, high reactivity of K metal and flammable electrolytes pose severe safety hazards.
View Article and Find Full Text PDFDielectric properties depend on the crystal structure of perovskite-type RbTaO synthesized at high pressure.
Dalton Trans
January 2025
Graduate School of Engineering and Science, Shibaura Institute of Technology, 307 Fukasaku, Minuma, Saitama, 337-8570, Japan.
We successfully synthesized perovskite-type RbTaO at 1173 K under 4 GPa. RbTaO crystalized as a cubic system (3̄ space group (SG), = 4.04108(3) Å) at 300 K in contrast to the orthorhombic perovskite-type RbNbO prepared under the same conditions.
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