A5003836070- Advanced battery technologies research
- Electrocatalysts for Energy Conversion
- Supercapacitor Materials and Fabrication
- Electrochemical Analysis and Applications
- Perovskite Materials and Applications
- Advanced Battery Technologies Research
- Advanced Battery Materials and Technologies
- Thermal Expansion and Ionic Conductivity
- Ionic liquids properties and applications
- Ultrasound and Hyperthermia Applications
- Nanomaterials for catalytic reactions
- Polyoxometalates: Synthesis and Applications
- Various Chemistry Research Topics
- Analytical Chemistry and Sensors
- Metal-Organic Frameworks: Synthesis and Applications
- Advancements in Battery Materials
- Advanced Nanomaterials in Catalysis
- Electrodeposition and Electroless Coatings
- Fuel Cells and Related Materials
- Advanced Chemical Sensor Technologies
- Molecular Junctions and Nanostructures
University of Hong Kong
2020-2024
Hong Kong University of Science and Technology
2020-2024
Central South University
2006-2015
World Wide Web Consortium
2003
Huaqiao University
2002
Materials Science & Engineering
2002
Abstract Redox flow batteries (RFBs) that employ sustainable, abundant, and structure-tunable redox-active species are of great interest for large-scale energy storage. As a vital class species, metal coordination complexes (MCCs) possessing the properties both organic ligands transition ion centers attracting increasing attention due to advantages multielectron charge transfer, high structural tailorability, reduced material crossover. Herein, we present critical overview RFBs MCCs as...
Aqueous organic redox flow batteries (AORFBs) employing synthetically tailorable electroactive compounds have received significant attention for energy storage technologies. There been many efforts in developing materials AORFBs with anion-exchange membranes. On the contrary, that are compatible cation-exchange membranes less studied. Here, we report an 4-carboxylic-2,2,6,6-tetramethylpiperidin-N-oxyl (4-CO2Na-TEMPO) molecule neutral AORFBs. The compound exhibits a good solubility of 1.5 M...
Nonaqueous organic redox flow batteries (NAORFBs) show great promise for grid energy storage but are currently facing key challenges such as high electroactive material cost and low density. Herein, we report the electrochemical properties potential application of a series cost-effective nitrobenzene molecules in NAORFBs. Pairing low-cost miscible liquid (NB) with 2,5-di-tert-butyl-1-methoxy-4-(20-methoxyethoxy)-benzene (DBMMB) resulted battery that provides theoretical cell voltage 2.2 V...
We synthesize a covalently linked bipolar molecule 1-(2-(4-methoxy-2,5-dimethylphenoxy) ethyl)-1′-methyl-[4,4′-bipyridine]-1,1′-diium hexafluorophosphate (VIODAMB) and apply this new compound to nonaqueous organic redox flow battery (NAORFB) as both the anolyte catholyte. demonstrate that symmetrical electrolyte can mitigate cross-contamination issue in battery. The exhibits an enhanced solubility of 0.66 M acetonitrile. cell delivers capacity retention rate 80% energy efficiency 85% over 35...
Zinc metal anodes are gaining popularity in aqueous electrochemical energy storage systems for their high safety, cost-effectiveness, and capacity. However, the service life of zinc is severely constrained by critical challenges, including dendrites, water-induced hydrogen evolution, passivation. In this study, a protective two-dimensional metal-organic framework interphase situ constructed on anode surface with novel gel vapor deposition method. The ultrathin layer (~1 µm) made...
We herein report the synthesis and characterization of a series ruthenium-substituted Keggin-type heteropolytungstates containing {Ru(II)(NO)}, {Ru(III)(H2O)} or {Ru(IV)Cl} species. Although anionic [PW11O39Ru(II)(NO)](4-) (1) [PW11O39Ru(III)(H2O)](4-) (2) are known, new synthetic method for preparation (n-Bu4N)4[1] (n-Bu4N)4[2] is developed in this paper. Treatment (n-Bu4N)4[XW11O39(Ru[triple bond, length as m-dash]N)] with Me3NO afforded ruthenium(ii) nitrosyl complex almost quantitative...
Abstract Electrodes, which offer sites for mass transfer and redox reactions, play a crucial role in determining the energy efficiencies power densities of flow batteries. This review focuses on various approaches to enhancing electrode performance, particularly methods surface etching catalyst deposition, as well some other advanced strategies regulating properties. These aim increase active enhance kinetics are elevating density electrolyte utilization, eventually performance battery....
In this study, we utilize a platinum ultramicroelectrode as model platform for electrocatalysts in acidic electrolytes to study the effects of local mass transfer on oxygen reduction reaction (ORR), which plays significant role fuel cells with reduced loading. Finite element simulations show that UME exhibits size-dependent ultrathin diffusion layers during electrochemical process. Submicron-scale UMEs can achieve ultrahigh localized transfer, is unattainable through other experimental...
The operating temperature of vanadium redox flow batteries (VRFBs) affects their performance and reliability. However, previous studies focused on evaluating the effects lab-scale single cells, in which electrolyte rates current densities are different from those stack-scale VRFBs, leading to lack guidance for design stacks. In this work, we investigate thermal VRFBs. It is found that as increases 25 50 °C, discharge capacity by 42%, whereas energy efficiency 10%, implying has greater than...
Recently, the electrospinning method has been employed to fabricate fibrous carbon electrodes in redox flow batteries, due large specific surface area of nano-scale electrospun fibers[1-3]. However, poor transport properties densely packed cause a resistance, and hence concentration overpotential, which limited battery’s performances [4,5]. The vanadium battery (VRFB) is one most-studied systems. state-of-art VRFB that fibers as electrode can only be operated realtively small current density...
Redox flow batteries (RFBs) that employ dissolved electroactive materials to store energy have attracted growing attention because of their great potential renewable but intermittent solar and wind energy. The unique technological merits decoupled power leads high flexibility scalability in design for the RFBs satisfy a wide range energy/power applications [1,2] . In established traditional RFBs, species are aqueous solutions redox-active inorganic transition-metal salts including...