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Transient Phase-Mediated Li Transportation in the Lithium Lanthanum Titanate Solid-State Electrolyte.
ACS Appl Mater Interfaces
October 2024
Institute of Molecular Plus, Department of Chemistry, Tianjin University & Haihe Laboratory of Sustainable Chemical Transformations, Tianjin 300072, China.
The lithium lanthanum titanium oxide (LLTO) perovskite is one type of superior lithium (Li)-ion conductor that is of great interest as a solid-state electrolyte for all-solid-state lithium batteries. Structural defects and impurity phases formed during the synthesis of LLTO largely affect its Li-ion conductivity, yet the underlying Li diffusion mechanism at the atomic scale is still under scrutiny. Herein, we use aberration-corrected transmission electron microscopy to perform a thorough structural characterization of the LLTO ceramic pellet.
View Article and Find Full Text PDFEarth-abundant Li-ion cathode materials with nanoengineered microstructures.
Nat Nanotechnol
December 2024
Department of Materials Science and Engineering, University of California Berkeley, Berkeley, CA, USA.
Article Synopsis
- - Manganese-based materials are promising candidates for next-generation lithium-ion batteries due to their abundance, low cost, and stability, particularly as cathodes.
- - The study demonstrates that slight heating of high-manganese disordered rocksalt cathodes creates nanosized spinel domains, which improve electrochemical properties by eliminating harmful lithiation reactions.
- - The resulting nanostructure allows for better performance, achieving a discharge capacity of 200 mAh g in a material with a primary particle size of about 5 µm, and highlights new methods for building efficient manganese-based cathodes.
Multiscale Approach for Tuning Communication among Chemical Oscillators Confined in Biomimetic Microcompartments.
Acc Chem Res
September 2024
Sorbonne Université, CNRS, PHysico-chimie des Electrolytes et Nanosystèmes InterfaciauX (PHENIX), F-75005 Paris, France.
ConspectusInspired by the biological world, new cross-border disciplines and technologies have emerged. Relevant examples include systems chemistry, which offers a bottom-up approach toward chemical complexity, and bio/chemical information and communication technology (bio/chemical ICT), which explores the conditions for propagating signals among individual microreactors separated by selectively permeable membranes. To fabricate specific arrays of microreactors, microfluidics has been demonstrated as an excellent method.
View Article and Find Full Text PDFPhase-resolved measurement and control of ultrafast dynamics in terahertz electronic oscillators.
Nat Commun
July 2024
Graduate School of Science, Kyoto University, Kyoto, Japan.
As a key component for next-generation wireless communications (6 G and beyond), terahertz (THz) electronic oscillators are being actively developed. Precise and dynamic phase control of ultrafast THz waveforms is essential for high-speed beam steering and high-capacity data transmission. However, measurement and control of such ultrafast dynamic process is beyond the scope of electronics due to the limited bandwidth of the electronic equipment.
View Article and Find Full Text PDFHybrid magnon-phonon localization enhances function near ferroic glassy states.
Sci Adv
June 2024
NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, MD, 20899, USA.
Ferroic materials on the verge of forming ferroic glasses exhibit heightened functionality that is often attributed to competing long- and short-range correlations. However, the physics underlying these enhancements is not well understood. The NiCoMnIn Heusler alloy is on the edge of forming both spin and strain glasses and exhibits magnetic field-induced shape memory and large magnetocaloric effects, making it a candidate for multicaloric cooling applications.
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