A5100427046- Membrane-based Ion Separation Techniques
- Fuel Cells and Related Materials
- Advanced Battery Materials and Technologies
- Electrocatalysts for Energy Conversion
- Electric Power System Optimization
- Power System Reliability and Maintenance
- Optical Network Technologies
- Energy Load and Power Forecasting
- Conducting polymers and applications
- Advanced Optical Network Technologies
- Organic Electronics and Photovoltaics
- Advanced battery technologies research
- Advanced Photonic Communication Systems
- Mercury impact and mitigation studies
- Ferroelectric and Negative Capacitance Devices
- Advanced Polymer Synthesis and Characterization
- Synthetic Organic Chemistry Methods
- Solar Radiation and Photovoltaics
- Perovskite Materials and Applications
- Photovoltaic System Optimization Techniques
- Stock Market Forecasting Methods
- Membrane Separation and Gas Transport
- Forecasting Techniques and Applications
- Inorganic Fluorides and Related Compounds
- Multimodal Machine Learning Applications
Huaiyin Normal University
2024
Gyeongsang National University
2021
Lanzhou Jiaotong University
2021
Shanghai University
2018-2019
Central South University
2019
Colorado School of Mines
2011-2017
Block copolymer membranes with a semicrystalline polyethylene component were prepared by anionic polymerization and postpolymerization functionalization reactions. Polybutadiene-b-poly(4-methylstyrene) (PB-b-P4MS) precursors four different block compositions 92–95% 1,4-content in the polybutadiene produced living nonpolar solvent. The was subsequently hydrogenated to prepare block, copolymers then brominated at arylmethyl group of P4MS block. Subsequent quaternization reaction trimethylamine...
A block copolymer of poly(vinylbenzyl chloride)-b-polystyrene (PVBC-b-PS) was synthesized through nitroxide-mediated polymerization, then blended with poly(2,6-dimethyl-1,4-phenylene oxide) (PPO) at different compositions, and solution cast to prepare a series blend films. Differential scanning calorimetry analysis the PVBC-b-PS PPO showed single glass transition temperature for each compositions examined, suggesting that all components in membranes are compatible. The benzyl chloride groups...
Poly(phenylene oxide) block and random copolymers are synthesized by oxidative polymerization of 2,6‐dimethylphenol 2,6‐diphenylphenol for potential alkaline exchange membrane application. The functionalized on the methyl substituted repeat units through a two‐step process to produce pendent quaternary ammonium cationic groups. amount cations ion capacity quantified titration measurements. Ionic conductivity copolymer membranes is measured electrochemical impedance spectroscopy. Block show...
ABSTRACT Anion exchange membranes (AEM) are solid polymer electrolytes that facilitate ion transport in fuel cells. In this study, a polystyrene‐ b ‐poly(vinylbenzyl trimethylammonium) diblock copolymer was evaluated as potential AEM and compared with the equivalent homopolymer blend. The had 92% conversion of reactive sites an IEC 1.72 ± 0.05 mmol g −1 , while blend 43% for 0.80 0.03 . At 50°C 95% relative humidity, chloride conductivity higher, 24–33 mS cm blend, 1–6 displayed phase...
Herein, we report the anion and water transport properties of an anion-exchange membrane (AEM) comprising a block copolymer polyethylene poly(vinylbenzyl trimethylammonium) (PE-b-PVBTMA) with ion-exchange capacity (IEC) 1.08 mequiv/g. The conductivity varied little among anions CO32–, HCO3–, F–, value Ea ≈ 20 kJ/mol maximum fluoride 34 mS/cm at 90 °C 95% relative humidity. Br– showed transition 60 °C. Pulsed gradient stimulated spin echo nuclear magnetic resonance (PGSE NMR) experiments that...
Inspired by the superior language abilities of large models (LLM), vision-language (LVLM) have been recently explored integrating powerful LLMs for improving performance on complex multimodal tasks. Despite promising progress LVLMs, we find that LVLMs suffer from hallucination problem, i.e. they tend to generate objects are inconsistent with target images in descriptions. To investigate it, this work presents first systematic study object LVLMs. We conduct evaluation experiments several...
A software-defined hybrid passive optical network (HPON) architecture is proposed, in which multiple PON systems using various physical layer (PHY) multiplexing technologies can coexist. The detailed upstream bandwidth allocation procedure illustrated, and the dynamic mechanism HPON primarily investigated. By introducing concept of virtual (VPON), an elaborate staged priority-based (SPB-DBA) for inter-VPON consists a delicate two-stage admission scheme to avoid frequent reallocation,...
Abstract α‐Methylstyrene (AMS) is determined to polymerize anionically by initiation with sec ‐bultyllithium under bulk conditions control of molecular weight depending on reaction time. Furthermore, the reactivity between AMS and isoprene in a mixture at high concentration (90% v/v) indicates strong inclination for almost sole polymerization (>97%). The microstructure polyisoprene be predominately 1,4‐polyisoprene polymerization. These results afford sequential process formation diblock...
There is increasing interest in the alkaline exchange membrane (AEM) fuel cells as this device, if realized, could allow use of inexpensive metal catalysts and oxidation a variety convenient liquid fuels. While there have been some dramatic early achievements, still need for fundamental study anion transport, cation stability formation robust thin films area. We undertaken comprehensive AEMs where theory linked to well-defined model systems, both solution solid state, which are characterized...
Amphiphilic block copolymers are excellent materials for potential alkaline anion exchange membrane (AAEM) application. In this study, a new synthetic pathway was investigated copolymerization of polybutadiene-b-poly(vinylbenzyl trimethyl ammonium chloride) (PB-b-P[VBTMA][Cl]). This amphiphilic diblock copolymer synthesis first involved formation benzyloxyamine functionalized polybutadiene by using 2,2,6,6-tetramethyl-1-(2-bromo-1-phenylethoxy) piperidine to terminate living anionic...
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Economic transmission planning heavily relies on the accuracy of quantitative analysis using market simulation tool, and it therefore requires benchmarking tool model against historical actuals. Facing technical challenges such analyses, there is a lack systematic approach standard in doing analyses industry. In that regard, this paper presents thorough has been recently conducted at MISO which many stakeholders considered by far most comprehensive profound study its kind. The not only...
Extensive transport and modeling studies have been performed on a series of polymers based vinylbenzyltrimethylamonium cations. Flouride is used as non-reactive surrogate for hydroxide to increase the computational efficiency calculations that can be performed. Interesting effects water residual chloride in film explained. In ordered di-block we strong theoretical evidence narrow domains facilitate rapid anions. With this model will able predict diblock polymer structures require less...
According to studies at home and abroad, hypertension is an important disease that endangers human life health. How early warn the increase in blood pressure time has become a hot research issue. To solve this problem, long-short-term memory network (LSTM)-convolutional neural (CNN) combined prediction model based on ensemble empirical mode decomposition proposed. Firstly, data decomposed into several intrinsic functions (IMF), then LSTM CNN are used extract features image respectively,...
Software-defined hybrid passive optical network (HPON) is an intelligent architecture and can implement the coexistence of multiple PON systems using various physical layer (PHY) multiplexing technologies. By introducing concept virtual (VPON), a three-stage dynamic bandwidth allocation algorithm based on fairness for original new VPONs in software-defined HPON proposed. The performance benefits proposed terms utilization, access probability index are verified through simulation.
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