A5103213743- Advanced MEMS and NEMS Technologies
- MXene and MAX Phase Materials
- Intermetallics and Advanced Alloy Properties
- Advancements in Battery Materials
- Microwave Engineering and Waveguides
- Advanced ceramic materials synthesis
- Advanced Battery Materials and Technologies
- Photonic and Optical Devices
- Acoustic Wave Resonator Technologies
- 3D IC and TSV technologies
- ZnO doping and properties
- Aluminum Alloys Composites Properties
- Gas Sensing Nanomaterials and Sensors
- Advanced materials and composites
- Semiconductor Lasers and Optical Devices
- Supercapacitor Materials and Fabrication
- Electronic Packaging and Soldering Technologies
- Advanced Surface Polishing Techniques
- Radio Frequency Integrated Circuit Design
- Mechanical and Optical Resonators
- Heat Transfer and Optimization
- Diamond and Carbon-based Materials Research
- Advanced Battery Technologies Research
- Advanced Antenna and Metasurface Technologies
- Ga2O3 and related materials
Hefei University of Technology
2017-2025
Nanjing Institute of Technology
2007-2024
Wuhan University
2005-2024
Chinese University of Hong Kong, Shenzhen
2024
State Grid Corporation of China (China)
2024
Nanjing University
2007-2023
China Nonferrous Metals Changsha Investigation Design Institute
2019-2022
Beijing University of Posts and Telecommunications
2007-2021
Zhaoqing University
2020-2021
South China Normal University
2020-2021
Particle surface design is shown to be essential in optimizing the performance and stability of NMC-type LIB cathode materials.
Abstract It is classically well perceived that cathode–air interfacial reactions, often instantaneous and thermodynamic non-equilibrium, will lead to the formation of layers, which subsequently, vitally, control behaviour performance batteries. However, understanding nature reactions remain elusive. Here, using atomic-resolution, time-resolved in-situ environmental transmission electron microscopy atomistic simulation, we reveal cathode–water can surface passivation, where resultant...
The limited lithium-ion diffusion and depressed cathode/electrolyte interface stability greatly deteriorate the cycling rate performance of batteries, especially when they are operated at elevated temperatures (≥50 °C) and/or high charge cutoff voltages (>4.4 V vs Li/Li+). Herein, we proposed a demand-oriented surface coating strategy by introducing multifunctional LiBO2/LiAlO2 layers onto LiNi0.5Co0.2Mn0.3O2 (NCM) single crystals, in which middle LiAlO2 layer is designed to ensure intimate...
The stability of cathode particle surfaces that are directly exposed to the electrolyte is one most crucial and determining factors for performance at high operating voltages. Theory has predicted a strong dependence surface on chemical compositions as well facets layered oxides, yet conflicting results correlations exist experimental studies focus cycled secondary particles recovered from composite electrodes. Herein, we synthesize well-formed Li[NixMnyCo1–x–y]O2 (NMC) single-crystal...
It is challenging to prepare phase-pure FeOF by wet-chemical methods. Furthermore, nanostructured has never been reported. In this study, hierarchical nanorods were synthesized through a facile, one-step, method the use of just FeF3⋅3H2O and an alcohol. was possible significantly control nanostructure selection alcohols with appropriate molecular structure. A mechanism for formation proposed. An impressive high specific capacity approximately 250 mAh g(-1) excellent cycling rate performances...
Abstract Spanwise heterogeneity in surface roughness generates secondary mean flows a rough-wall turbulent boundary layer. This study investigates the influence of spanwise wavelength on \textcolor{blue}{arrangement} these using Direct Numerical Simulation (DNS). We systematically vary wavelength, $S/\delta$, from $\pi/16$ to $2\pi$, while maintaining constant height and coverage density. Here, $S$ represents $\delta$ denotes \textcolor{blue}{the outer length scale, which this case is...
Sodium-ion batteries are considered as a promising alternative to replace the existing lithium-ion for energy storage due benefits of low cost and safety. However, it is still challenging develop suitable electrode materials reversible sodium. Metal anodes have high capacity sodium but suffer issue poor cyclability pulverization caused by large volume variation disintegration. To address this issue, amorphous bimetallic active–inactive nanoalloy Co–Sn with Sn acting active compound Co...
Layered LiNi0.4Mn0.4Co0.18Ti0.02O2 cathode powders were ball-milled for various lengths of time. The structural properties the pristine and milled powders, which have different particle sizes examined with X-ray diffraction, soft absorption spectroscopy, transmission electron microscopy to determine effect milling on structure. Electrochemical testing in half-cells was also carried out shows that plays an important role performance these materials; as time increases, there is a decrease...
While Ni-rich Li[NixMnyCo1–x–y]O2 (NMC, x ≥ 0.8) compounds are considered the most promising cathode materials for high-energy lithium-ion batteries (LIBs), a significant challenge is higher reactivities caused by increased Ni content, especially under high-voltage operation conditions. In present study, we synthesize three single-crystal NMC (SC-NMC) samples with same particle size and morphology: LiNi0.8Mn0.1Co0.1O2 (NMC811), LiNi0.80Mn0.15Co0.05O2 (NMC80155), LiNi0.85Mn0.10Co0.05O2...
The formation of the Au-TiO2 nanocomposite on monolayer Graphene (GTA) by sequentially depositing titanium dioxide particles and gold nanoparticles graphene sheet was synthesized analyzed in our work. structural, morphological, physicochemical properties samples were thoroughly investigated UV-Vis spectrophotometer, Raman spectroscopy, Fourier transform infrared atomic force microscopy, scanning electron microscope, transmission microscope. Photocatalytic performance GTA, (GR), TiO2, TiO2...
The acceleration of the melting process phase change materials caused by buoyancy-driven natural convection has been widely acknowledged, especially for rectangular geometries. This phenomenon exists in cases where are heated at bottom boundary or both upper and boundaries. article reveals how rate could be affected changing orientation a material container with constant temperature boundary. transient processes lauric acid two-dimensional five orientations (θ = 0°, 22.5°, 45°, 67.5°, 90°)...