A5076450346- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Multiferroics and related materials
- Ferroelectric and Piezoelectric Materials
- Electronic and Structural Properties of Oxides
- Advanced Battery Technologies Research
- Supercapacitor Materials and Fabrication
- Graphene research and applications
- 2D Materials and Applications
- Extraction and Separation Processes
- Semiconductor materials and devices
- Acoustic Wave Resonator Technologies
- Conducting polymers and applications
- Anomaly Detection Techniques and Applications
- Physics of Superconductivity and Magnetism
- Electron and X-Ray Spectroscopy Techniques
- Soil Moisture and Remote Sensing
- Gold and Silver Nanoparticles Synthesis and Applications
- Ferroelectric and Negative Capacitance Devices
- Advanced biosensing and bioanalysis techniques
- Analytical Chemistry and Sensors
- Gas Sensing Nanomaterials and Sensors
- Image Processing Techniques and Applications
- Soil Geostatistics and Mapping
- Non-Destructive Testing Techniques
Southwest Jiaotong University
2023-2025
Henan Agricultural University
2022-2025
Environmental Molecular Sciences Laboratory
2019-2024
Pacific Northwest National Laboratory
2019-2024
Guangxi University of Science and Technology
2022-2024
Chengdu University of Technology
2024
University of California, Irvine
2016-2023
Taiyuan Institute of Technology
2023
Battelle
2019-2023
Zhejiang University of Science and Technology
2023
High-energy nickel (Ni)-rich cathode will play a key role in advanced lithium (Li)-ion batteries, but it suffers from moisture sensitivity, side reactions, and gas generation. Single-crystalline Ni-rich has great potential to address the challenges present its polycrystalline counterpart by reducing phase boundaries materials surfaces. However, synthesis of high-performance single-crystalline is very challenging, notwithstanding fundamental linkage between overpotential, microstructure,...
Enriching the functionality of ferroelectric materials with visible-light sensitivity and multiaxial switching capability would open up new opportunities for their applications in advanced information storage diverse signal manipulation functions. We report experimental observations robust intralayer ferroelectricity two-dimensional (2D) van der Waals layered α-In2Se3 ultrathin flakes at room temperature. Distinct from other 2D conventional ferroelectrics, In2Se3 exhibits intrinsically...
Nanoscale metal inclusions in or on solid-state dielectrics are an integral part of modern electrocatalysis, optoelectronics, capacitors, metamaterials and memory devices. The properties these composite systems strongly depend the size, dispersion their chemical stability, usually considered constant. Here we demonstrate that nanoscale (for example, clusters) dynamically change shape, size position upon applied electric field. Through systematic situ transmission electron microscopy studies,...
We report the electronic structure and optical properties of recently synthesized stable two-dimensional carbon allotrope graphdiyne based on first-principles calculations experimental spectrum. Due to enhanced Coulomb interaction in reduced dimensionality, band gap increases 1.10 eV within $GW$ many-body theory from a value 0.44 density functional theory. The absorption is dominated by excitonic effects with remarkable electron-hole binding energy over 0.55 $GW$--Bethe-Salpeter equation...
Interest in the two-dimensional MoS2 material is consistently increasing because of its many potential applications, particular next-generation nanoelectronic devices. By means density functional theory computations, we systematically examined effect vertical electric field on electronic structure bilayer. The bandgaps bilayer monotonically decrease with an field. critical fields, at which semiconductor-to-metal transition occurs, are predicted to be range 1.0–1.5 V/Å depending different...
Supported precious metals with atomic dispersion are of great interest in catalysis due to their potentials achieving maximum atom efficiency and unique reactivities. Herein, the active sites for low-temperature CO oxidation elucidated over single-atom Pd1/CeO2 catalysts prepared via high-temperature trapping (AT). The increased oxygen vacancies on CeO2 surface induced by 800 °C air calcination result decreased Pd–CeO2 coordinations, i.e., coordination-unsaturated Pd2+ CeO2. Light-off...
Abstract Earth-abundant cathode materials are urgently needed to enable scaling of the Li-ion industry multiply terawatt hours annual production, necessitating reconsideration how good can be obtained. Irreversible transition metal migration and phase transformations in cathodes typically believed detrimental because they may trigger voltage hysteresis, poor kinetics capacity degradation. Here we challenge this conventional consensus by reporting an unusual transformation from disordered Li-...
Abstract Oxides with a face-centred cubic (fcc) anion sublattice are generally not considered as solid-state electrolytes the structural framework is thought to be unfavourable for lithium (Li) superionic conduction. Here we demonstrate Li conductivity in fcc-type oxides which face-sharing configurations have been created through cation over-stoichiometry rocksalt-type lattices via excess Li. We find that create novel spinel unconventional stoichiometry and raise energy of Li, thereby...
Dielectric properties are crucial in understanding the behavior of water within soil, particularly soil content (SWC), as they measure a material’s ability to store an electric charge and influenced by other minerals soil. However, comprehensive review paper is needed that synthesizes latest developments this field, identifies key challenges limitations, outlines future research directions. In addition, various factors, such salinity, temperature, texture, probing space, installation gap,...
Using first-principles calculations, we explore the possibility of functionalized graphene as a high-performance two-dimensional spintronics device. Graphene with O on one side and H other in chair conformation is found to be ferromagnetic metal spin-filter efficiency up 54% at finite bias. The ground state semifunctionalized F an antiferromagnetic semiconductor, construct spin-valve device from it by introducing magnetic field stabilize its metallic state. resulting room-temperature...
Controlled switching of resistivity in ferroelectric thin films is demonstrated by writing and erasing stable, nanoscale, strongly charged domain walls using an situ transmission electron microscopy technique. The resistance can be read nondestructively presents the largest off/on ratio (≈10(5) ) ever reported room-temperature devices, opening new avenues for engineering thin-film devices.
Nanometer-thick reconstruction layers on layered cathode surfaces have been widely observed both pristine and cycled materials. However, the mechanisms of role that these structures play in electrochemical performance are not fully understood. From a crystallographic perspective, such surface result from cation site-mixing between Li transition-metal ions, but it remains far clear as to what critical factors control mixing for various chemistries. Here, we report observations transformations...
Abstract Cation‐disordered rocksalt (DRX) materials have emerged as a class of novel high‐capacity cathodes for Li‐ion batteries. However, the commercialization DRX will require reducing their capacity decay, which has been associated with oxygen loss during cycling. Recent studies show that fluorination can effectively reduce and improve cycling stability; however, underlying atomic‐scale mechanisms remain elusive. Herein, using combination electrochemical measurements, scanning...
Efficient and lightweight single-image super-resolution (SISR) has achieved remarkable performance in recent years. One effective approach is the use of large kernel designs, which have been shown to improve SISR models while reducing their computational requirements. However, current state-of-the-art (SOTA) still face problems such as high costs. To address these issues, we propose Large Kernel Distillation Network (LKDN) this paper. Our simplifies model structure introduces more efficient...
Abstract Sustainable agricultural practices help to manage and use natural resources efficiently. Due global climate geospatial land design, soil texture, soil–water content (SWC), other parameters vary greatly; thus, real time, robust, accurate analytical measurements are difficult be developed. Conventional statistical analysis tools take longer analyze interpret data, which may have delayed a crucial decision. Therefore, this review paper is presented develop the researcher’s insight...
Abstract Memristors enter a critical developmental stage where emerging large‐scale integration methods face major challenges with severe switching instabilities in the oxide layer. Here, superior uniformity is achieved within HfO 2 films by embedding highly ordered metal nanoisland (NI) arrays. Embedded exhibit significant reduction both SET and RESET while displaying enhanced operating voltages resistance states. This behavior attributed to concentration of electric fields along Pt Ti NIs...
Continuous developments in nanotechnology require new approaches to materials synthesis that can produce novel functional structures. Here, we show nanoscale defects, such as nonstoichiometric nanoregions (NSNRs), act nano-building blocks for creating complex electrical polarization structures the prototypical multiferroic ${\mathrm{BiFeO}}_{3}$. An array of charged NSNRs are produced ${\mathrm{BiFeO}}_{3}$ thin films by tuning substrate temperature during film growth. Atomic-scale scanning...
Abstract The capacity of lithium transition‐metal (TM) oxide cathodes is directly linked to the magnitude and accessibility redox reservoir associated with TM cations and/or oxygen anions, which traditionally decreases cycling as a result chemical, structural, or mechanical fatigue. Here, it shown that increase over 125% can be achieved upon high‐energy Mn‐ F‐rich cation‐disordered rocksalt oxyfluoride cathodes. This study reveals in Li 1.2 Mn 0.7 Nb 0.1 O 1.8 F 0.2 , repeated...