A5048248480- Metallic Glasses and Amorphous Alloys
- Magnetic Properties and Applications
- Metal and Thin Film Mechanics
- Magnetic Properties of Alloys
- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Diamond and Carbon-based Materials Research
- Magnetic properties of thin films
- Metallurgy and Material Forming
- GaN-based semiconductor devices and materials
- Advanced Battery Technologies Research
- Plasma Diagnostics and Applications
- Semiconductor materials and devices
- Catalytic Processes in Materials Science
- Supercapacitor Materials and Fabrication
- Advanced Surface Polishing Techniques
- Metallurgy and Material Science
- ZnO doping and properties
- Ion-surface interactions and analysis
- Manufacturing Process and Optimization
- High Entropy Alloys Studies
- Aluminum Alloy Microstructure Properties
- Nanomaterials for catalytic reactions
- Additive Manufacturing Materials and Processes
- Optical Systems and Laser Technology
Peking University
2014-2024
Guangdong University of Technology
2018-2021
City University of Hong Kong
2021
Peking University Shenzhen Hospital
2014-2019
Beijing University of Chemical Technology
2018
Yancheng Institute of Technology
2012
Abstract Recently, the rock‐salt (RS) phases are utilized to enhance surface stability of LiCoO 2 (LCO), however, optimization mechanism still remains vague. Herein, structure LCO is successfully enhanced via constructing a tough RS layer (≈5 nm), namely, RS‐LCO. This plays significant role on capturing migrated lattice O ions upon charging, leading progressive phase transition from an inert ionic conductive spinel in surface, and suppresses bulk H1‐3 separation beyond 4.6 V. As result, not...
Abstract Catalytic oxidation of carbon monoxide (CO) is great importance in many different fields industry. Until now it still remains challenging to use non-noble metal based catalysts oxidize CO at low temperature. Herein, we report a new class nanoporous, uniform and transition metal-doped cerium (IV) oxide (ceria, CeO 2 ) microsphere for catalysis. The porous generated by sacrificed polymer template. Transition-metals, like Cu, Co, Ni, Mn Fe, were doped into microspheres. combination...
Abstract Recently, strategies of optimizing cathode/electrolyte interphase (CEI) have been applied to enhance the durability LiCoO 2 (LCO) at high voltages (≥4.55 V vs Li/Li + ) and temperatures (≥45 °C), but underlying mechanism is still in debate. Herein, a durable CEI on LCO that operates 45 °C achieved via tuning chemical morphological properties surface. Specifically, an artificial layer composing island‐shaped AlPO 4 /Li 3 PO deposits constructed surface, i.e., AP‐LCO. Upon cycle,...
During a practical battery manufacture process, the LiCoO2 (LCO) electrodes are usually rolled with high pressure to achieve better performance, including reducing electrode polarization, increasing compact density, enhancing mechanical toughness, etc. In this work, high-voltage LCO (HV-LCO) is achieved via modulating commercialized an Al/F enriched and spinel reinforced surface structure. We reveal that rolling can more or less introduce risk of grain-boundary-cracking (GBC) inside HV-LCO...
Abstract In practical applications, LiCoO 2 (LCO) cathode is usually charged with a constant current plus voltage (CC+CV) procedure to obtain higher capacity delivery. However, the harsh condition upon CC+CV causes accelerated decay of LCO. Herein, fading mechanism LCO cycling at 4.6 V versus Li/Li + first revealed. Comparing pure CC charging, attributed both bulk and surface structure damages: i) CV charging triggers more H1‐3 phase separation, leading generation lattice dislocations,...
Abstract To obtain both high ionization and deposition rate, a modified global model for continuous high-power DC magnetron sputtering (C-HPMS) is established by considering the generation of hot electrons temperature caused discharge. The results show that plasma density on order 10 19 m −3 power densities only 183 W cm −2 (Al) 117 (Cu). rate exceeds 90% impulse (HiPIMS) (peak 564 ) 180 , total diffusion fluxes two targets are 26 30 (Cu) times conventional HiPIMS, leading to very rates....
Abstract In spite of advances in integrated circuit technology, dust and corrosion continue to play detrimental roles electronic device components such as electrodes wires, causing possible short circuits arcing, consequently undermining the long‐time durability devices. Super‐hydrophobic Cu/CuO films with easy cleaning characteristics excellent resistance are prepared by one‐step high‐power magnetron sputtering tested under high salinity conditions. Self‐regulation preferred orientations...
A monodisperse Pt/ceria hybrid with controlled nanoporous structure was fabricated the aid of poly(glycidyl methacrylate-<italic>co</italic>-ethylene glycol dimethacrylate) microspheres as a hard template.
Target poisoning is prevalent in reactive magnetron sputtering and causes deleterious effects, especially deposition using metal targets. Both the rate stoichiometry ratio of coatings will be compromised because quicker coverage materials on target relative to removal by sputtering. Continuous high-power (C-HPMS) possesses merits such as more rapid than impulse better resistance. In this work, discharge plasma characteristics C-HPMS for an Al O2/Ar atmospheres are investigated modeling...
A home-made electron source assisted medium-frequency (MF) magnetron sputtering system was used to deposit thick CrN films on silicon and tungsten carbide substrates at various nitrogen flow rates with a fixed total pressure (0.3 Pa) MF power (11.2 kW). Result from scanning microscopy showed that the deposited have clear columnar structure, X-ray diffraction revealed preferred orientation of (200) for samples prepared rate N2/(N2+Ar) below 60%, whereas those higher are dominated by Cr2N....