A5103077090- Metallurgical Processes and Thermodynamics
- Iron and Steelmaking Processes
- Microstructure and Mechanical Properties of Steels
- Metal Extraction and Bioleaching
- Hydrogen embrittlement and corrosion behaviors in metals
- Metal Alloys Wear and Properties
- Metallurgy and Material Forming
- Perovskite Materials and Applications
- Advancements in Battery Materials
- Corrosion Behavior and Inhibition
- Advanced Battery Materials and Technologies
- Conducting polymers and applications
- Chalcogenide Semiconductor Thin Films
- Welding Techniques and Residual Stresses
- Minerals Flotation and Separation Techniques
- Quantum Dots Synthesis And Properties
- Concrete Corrosion and Durability
- Extraction and Separation Processes
- Advanced battery technologies research
- Advanced Welding Techniques Analysis
- Catalytic Processes in Materials Science
- Injection Molding Process and Properties
- Fatigue and fracture mechanics
- Advanced Battery Technologies Research
- Materials Engineering and Processing
Yangzhou University
2023
Nanjing University of Posts and Telecommunications
2018-2021
The Synergetic Innovation Center for Advanced Materials
2019
Huazhong University of Science and Technology
2017-2019
Jiangsu University
2016
Northeastern University
2015
Universidad del Noreste
2001-2014
Mineral Resources
2013-2014
Guizhou University
2013-2014
Chongqing Institute of Geology and Mineral Resources
2014
Nonradiative recombination, the main energy loss channel for open circuit voltage ( Voc), is one of crucial problems achieving high power conversion efficiency (PCE) in inverted perovskite solar cells (PSCs). Usually, grain boundary passivation considered as an effective way to reduce nonradiative recombination because defects (uncoordinated ions) on boundaries are passivated. We added hydroxyl and carbonyl functional groups containing carbon quantum dots (CQDs) into a precursor solution...
Benefits from both physical barrier and chemical adsorption, the SiO<sub>2</sub>@HC/S composite exhibits excellent electrochemical properties an extraordinary anti-self-discharge feature.
The commonly used electron transport material (6,6)-phenyl-C61 butyric acid methyl ester (PCBM) for perovskite solar cells (PSC) with inverted planar structures suffers from properties such as poor film-forming. In this manuscript, we demonstrate a simple method to improve the film-forming of PCBM by doping poly(9,9-dioctylfluorene-co-benzothiadiazole) (F8BT) layer (ETL), which effectively enhances performance CH₃NH₃PbI₃ based cells. With 5 wt % F8BT in PCBM, short circuit current (JSC) and...
A monolayer poly(vinyl alcohol) (PVA)-based separator with pendant sulfonate/carboxylate groups and compact morphology is synthesized to suppress the essential lithium polysulfide permeation in sulfur batteries (LSBs). The Li+ transference number significantly increased 0.8, much higher than that of a commercial (0.43). retention verified by idle test polysulfide-rich electrolyte under internal electric field cell. LSB an additive-free attains Coulombic efficiency around 98% delivered...
Keyhole-mode laser welding under reduced ambient pressure is known to provide improved weld penetration, narrower width, and incidences of defects, but the underlying mechanism for these benefits not known. We sought elucidate by an experimental theoretical program investigation. Potential causative factors, such as depression boiling point al-loys at pressures changes in beam attenuation metal vapors/plasma, were investigated using a well-tested heat transfer fluid flow model keyhole-mode...
The practical use of the rechargeable lithium-sulfur (Li-S) battery is still restricted by poor cycle life and rate performance caused shuttle soluble redox intermediates low conductivity S/Li2S. A comprehensive approach to tune multi-electron reactions construct reversible chemical bonds with polysulfide intermediates. In this study, RuO2 nano dots (NDs) are proposed anchor polysulfides, trigger surface-mediated reduction polysulfides facilitate formation Li2S2/Li2S through its catalytic...
The applications of metal-organic frameworks (MOFs) as sulfur hosts focus on pristine MOFs and their carbonization products for establishing high-performance lithium-sulfur batteries (LSBs). However, the mechanism that modulates specific nanostructures compositions at different treatment temperatures still needs further exploration. In this work, we modulate pyrolysis UiO-66-NH2@rGO (U@rGO) a predetermined temperature by thermogravimetric (TG) analysis systematically investigate...
Abstract The morphology of perovskite light-absorption layer plays an important role in the performance solar cells (PSCs). In this work, BiFeO 3 (BFO) nanostructures were used as additive for CH NH PbI (MAPbI ) via anti-solvent method. addition BFO greatly enhanced crystallinity, grain size and film uniformity MAPbI . As a result, charge carrier mobility electron diffusion length increased, leading to increase short circuit current (J SC PSCs. This work provides very simple but effective...
In this paper, the mechanical property experiments of concrete based on seawater and sea sand have been carried in different raw materials preparation conservation environments. The results show that early strength late are better than freshwater sand. There is no significant decreased for under accelerated alternating wet dry conditions. For mixed with admixture, downward trend significantly delayed, slag gets most obvious growth trend, while fly ash largest increment.
New mold fluxes with CaO–Al 2 O 3 –Li O–CeO system are proposed for heat‐resistant steel continuous casting. The fundamental properties investigated systematically. It is found that the appropriate content of CeO determined to be ≈10 wt%, melting temperature did not change much increasing content, which indicates could show steady smelting after continuously absorbing inclusions containing cerium in casting process. After adding , precipitation CaO crystallization process restrained, and...
AbstractSlag splashing, which is a new technology to increase converter lining life, has achieved significant economic and environmental results. Via model of Steelmaking Plant no. 3 An-Shan Iron Steel Group Corp., physical experimental research on slag splashing was carried out. The effects top blowing parameters, bottom stirring properties lance structure are discussed. optimum amount 11% under the conditions investigated. secondary nozzles have detrimental effect splashing. nozzle angle...
Utilizing Pakistan chromite as raw material, the rapid leaching of chromium and iron could be realized by sulfuric acid process on condition atmospheric pressure addition oxidant A. And rate would 98.5% 71.9%, respectively. The processes with different temperature were systematically studied chemical analysis phase analysis. results showed that, increase reaction temperature, gradually, but increased at first then decreases reached its maximum 140°C. When > 160°C, phases residue magnesium...
Heavy rail steel was prepared by the process of vacuum induction furnace smelting, forge work and rolling. Effects mechanisms niobium on fracture toughness heavy were investigated. In addition, appropriate range content for determined. With increasing, both austenite grain size pearlite laminae distance decreased gradually at first then increased rapidly. When low, precipitates containing predominantly appeared in cementite, which improved fining distance; when > 0.024%, fine dispersed...
Reservoir rocks of the Pearl River Mouth Basin’s Lufeng Sag have low porosity (average 12.6%) and permeability 16.5 mD), requiring hydraulic fracturing to obtain economic production oil gas. To contribute understanding these reservoirs, promote successful in region, we analyzed mechanical properties tight sandstone. Moreover, introduced shear/tensile strength factor, combination with fracture toughness horizontal stress difference coefficient, as an innovative approach characterize ease...
In order to improve the effects of rare earths (RE) as microalloy on recrystallization behavior in high strength micro-alloyed steel, X80 pipeline steels with different RE content were produced a vacuum induction furnace, series hot torsion tests performed under range deformation conditions, and stress-strain curves analyzed. The results showed that trace would austenite behavior. activation energy static steel without additions respectively 393 366 kJ/mol. When addition was 0.0025 wt.%,...
In order to reduce fluorine pollution, partial fluoride could be replaced by B 2 O 3 in mould flux. The effects of on properties low content flux for thin slab continuous casting were studied. included melting temperature, viscous characteristics, fluidity, surface tension and Al inclusion adsorption. results showed that with the increase content, viscosity, activation energy decreased obviously, fluidity increased, adsorption changed little. play effective role when its was less than 6%....
Yong-Qing Yanga, Meng-Chen Jia, Zheng Lua*, Mao Jianga, Wei-Wei Huanga & Xue-Zhi Heaa School of Pharmacy, Jiangsu University, Zhenjiang, Jiangsu, China
The effects of Li2CO3 on melting temperature, viscosity, fluidity, surface tension and Al2O3 inclusion adsorption mould flux for high speed continuous casting were studied. results showed that with the increase content, viscosity viscous activation energy decreased obviously, fluidity increased, changed little, increased. In order to play an effective role, content should be less than 4 per cent. will a guiding role in designing casting.
Effects of TiO 2 on the viscous characteristic mold fluxes for stainless steel were investigated by rotary viscometer, TEM and XRD. The results showed that with increasing amount additive , viscosity solidification temperature could decrease gradually, then increase rapidly. minimum 0.30Pa.s (1300°С ) 1198°С respectively, as was 10mass%. be decreased which played role network modifier, increased precipitation perovskite (CaTiO 3 crystals more than critical value. growth cuspidine...
Accorded with the criteria X80 pipeline steels RE additions have been prepared a vacuum induction furnace. The effect of rare earths (RE) on austenite grain growth behavior in steel has discussed this work. After hot rolled, studied by thermal simulator, scanning electron microscopy and metallographic microscope. results indicate that inhibit abnormal grain, trace could significantly influence behavior, obtain fine size steel. For instance, activation energy reduced from 475 kJ/mol to 425...