A5101977919- Electrocatalysts for Energy Conversion
- Advanced battery technologies research
- Advancements in Battery Materials
- Supercapacitor Materials and Fabrication
- Advanced Battery Materials and Technologies
- Fuel Cells and Related Materials
- Catalytic Processes in Materials Science
- GaN-based semiconductor devices and materials
- ZnO doping and properties
- Carbon Nanotubes in Composites
- Graphene research and applications
- Ga2O3 and related materials
- Nanowire Synthesis and Applications
- CO2 Reduction Techniques and Catalysts
- Advanced Photocatalysis Techniques
- Conducting polymers and applications
- Semiconductor materials and devices
- Quantum Dots Synthesis And Properties
- Ionic liquids properties and applications
- Layered Double Hydroxides Synthesis and Applications
- Metal and Thin Film Mechanics
- Copper-based nanomaterials and applications
- Boron and Carbon Nanomaterials Research
- Acoustic Wave Resonator Technologies
- Nanomaterials for catalytic reactions
Nanjing University
2016-2025
Florida A&M University - Florida State University College of Engineering
2008-2025
Florida State University
2023-2025
Shanghai University of Electric Power
2025
Hainan Medical University
2025
Nanjing Tech University
2003-2024
The Synergetic Innovation Center for Advanced Materials
2024
Nanjing University of Posts and Telecommunications
2024
Harbin Institute of Technology
2007-2023
Heilongjiang Institute of Technology
2008-2023
A metal-free electrocatalyst has been developed by doping carbon nanotubes with electron-deficient boron. The good performance in the oxygen reduction reaction originates from enhanced O2 chemisorption and effective utilization of π electrons conjugated boron doping, as revealed DFT calculations.
Two kinds of boron and nitrogen co-doped carbon nanotubes (CNTs) dominated by bonded or separated B N are intentionally prepared, which present distinct oxygen reduction reaction (ORR) performances. The experimental theoretical results indicate that the case cannot, while one can, turn inert CNTs into ORR electrocatalysts. This progress demonstrates crucial role doping microstructure on performance, is significance in exploring advanced C-based metal-free
The synergism of large surface area, multiscale porous structure, and good conductivity endows hierarchical carbon nanocages with high-level supercapacitive performances. Further nitrogen doping greatly improves the hydrophilicity, which boosts performances to an ultrahigh specific capacitance up 313 F g(-1) at 1 A g(-1).
Metal-free ORR Electrocatalysts: N-doped carbon nanocages (NCNCs) with large specific surface areas of up to 1393 m2 g−1, which demonstrate excellent performance high activity, are produced for the first time. Without interference any ORR-active metal impurities in NCNCs, experimental results confirm that activity originates from species. Detailed facts importance specialist readers published as ”Supporting Information”. Such documents peer-reviewed, but not copy-edited or typeset. They made...
While the field of carbon-based metal-free electrocatalysts for oxygen reduction reaction (ORR) has experienced great progress in recent years, fundamental issue origin ORR activity is far from being clarified. To date, activities these are usually attributed to different dopants, while contribution intrinsic carbon defects been explored little. Herein, we report high defective nanocages, which better than that B-doped nanotubes and comparable N-doped nanostructures. Density functional...
Supercapacitor electrode materials: Carbon nanocages are conveniently produced by an in situ MgO template method and demonstrate high specific capacitance over a wide range of charging– discharging rates with stability, superior to the most carbonaceous supercapacitor materials date. The large surface area, good mesoporosity, regular structure responsible for excellent performance. Detailed facts importance specialist readers published as ”Supporting Information”. Such documents...
3D few-layer graphene-like carbon with hierarchical open porous architecture is obtained by a new in situ Cu template method, leading to top-level supercapacitive performance, especially state-of-the-art power density. An effective approach demonstrated, which can extend the understanding of structure-performance relationships for many electrochemical energy-storage systems and form significant complement classical impedance spectroscopy.
Bor wirkt leistungssteigernd: Ein metallfreier Elektrokatalysator aus bordotierten Kohlenstoffnanoröhren erzielt gute Ergebnisse in der Sauerstoffreduktion. DFT-Rechnungen zufolge liegt dies an einer verstärkten O2-Chemisorption und dem effektiven Einsatz von π-Elektronen des infolge Bordotierung konjugierten Kohlenstoffmaterials. Detailed facts of importance to specialist readers are published as "Supporting Information". Such documents peer-reviewed, but not copy-edited or typeset. They...
Abstract Single-site catalysts feature high catalytic activity but their facile construction and durable utilization are highly challenging. Herein, we report a simple impregnation-adsorption method to construct platinum single-site by synergic micropore trapping nitrogen anchoring on hierarchical nitrogen-doped carbon nanocages. The optimal catalyst exhibits record-high electrocatalytic hydrogen evolution performance with low overpotential, mass long stability, much superior the...
High volumetric energy density combined with high power is highly desired for electrical double‐layer capacitors. Usually the performance improved by compressing carbon material to increase but at much expense of due deviation compressed porous structure from ideal one. Herein authors report an efficient approach and optimize collapsing nanocages via capillarity. Three samples decreasing sizes meso‐ macropores provide us model system demonstrate correlation structure. The results indicate...
Fischer–Tropsch synthesis (FTS) is a classical topic of great significance because the approach post-petroleum times. For decades, people have attempted to develop iron-based FTS catalysts with high selectivity for lower olefins. By means anchoring effect and intrinsic basicity nitrogen-doped carbon nanotubes (NCNTs), iron nanoparticles were conveniently immobilized on NCNTs without surface premodification. The so-constructed Fe/NCNTs catalyst presents superb catalytic performance in olefins...
ConspectusCarbon-based nanomaterials have been the focus of research interests in past 30 years due to their abundant microstructures and morphologies, excellent properties, wide potential applications, as landmarked by 0D fullerene, 1D nanotubes, 2D graphene. With availability high specific surface area (SSA), well-balanced pore distribution, conductivity, tunable wettability, carbon-based are highly expected advanced materials for energy conversion storage meet increasing demands clean...
The mesostructured NiO/Ni composites boost the electrochemical energy storage performance of NiO to its theoretical limit, which results from synergism high accessibility electrolyte, short solid-state ion diffusion length and conductivity owing unique mesostructure.
Exploring cheap and stable electrocatalysts to replace Pt for the oxygen reduction reaction (ORR) is now key issue large-scale application of fuel cells. Herein, we report an alloyed Co–Mo nitride electrocatalyst supported on nitrogen-doped carbon nanocages (NCNCs) which combines merits cobalt molybdenum nitride, showing high activity comparable that progressively enhanced stability with increase in Mo ratio. The typical Co0.5Mo0.5Ny/NCNCs catalyst demonstrates excellent ORR performance...
Electrocatalytic CO2 reduction (CO2RR) to alcohols offers a promising strategy for converting waste into valuable fuels/chemicals but usually requires large overpotentials. Herein, we report catalyst comprising unique oxygen-bridged Cu binuclear sites (CuOCu-N4) with Cu···Cu distance of 3.0–3.1 Å and concomitant conventional Cu–N4 mononuclear on hierarchical nitrogen-doped carbon nanocages (hNCNCs). The exhibits state-of-the-art low overpotential 0.19 V (versus reversible hydrogen electrode)...
Rechargeable aqueous zinc batteries are promising but hindered by unfavorable dendrite growth and side reactions on anodes. In this study, we demonstrate a fast melting-solidification approach for effectively converting commercial Zn foils into single (002)-textured featuring millimeter-sized grains. The melting process eliminates initial texture, residual stress, grain size variations in diverse foils, guaranteeing the uniformity of Zn. (002)-texture ensures large-scale epitaxial dense...
Abstract The electrocatalytic performance of single‐site catalysts (SSCs) is closely correlated with the electronic structure metal atoms. Herein we construct a series Pt SSCs on heteroatom‐doped hierarchical carbon nanocages, which exhibit increasing hydrogen evolution reaction (HER) activities along S‐doped, P‐doped, undoped and N‐doped supports. Theoretical simulation indicates multi‐H‐atom adsorption process due to low coordination, reasonable descriptor figured out evaluate HER...
Abstract Carbon cloth (CC) possesses great potential as a sulfur host because of its excellent conductivity, flexibility, and easily modified free‐standing structure. However, the previous works do not take full advantage CC except for role support current collector. The smooth surface, small specific surface area, poor binding force between coating materials matrix are unfavorable loading materials. slow redox kinetics low cathodes still seriously restrict development Lithium–Sulfur (Li–S)...
The electrocatalytic nitrate/nitrite reduction reaction (eNO
The synthesis of the faceted single-crystalline h-AlN nanotubes with length a few micrometers and diameters from 30 to 80 nm is first reported. This provides an ideal substrate for construction GaN-based nanoheterostructures in future nanoelectronics. experimental results suggest further extensive theoretical studies on promising nonlayered nanotubular structures.
Aluminum nitride nanostructures are attractive for many promising applications in semiconductor nanotechnology. Herein we report on vapor−solid growth of quasi-aligned aluminum nanocones catalyst-coated wafers via the reactions between AlCl3 vapor and NH3 gas under moderate temperatures around 700 °C, mechanism is briefly discussed. The as-prepared wurtzite grow preferentially along c-axis with adjustable dimensions sharp tips range 20−60 nm. photoluminescence spectrum reveals a broad blue...
Controllable synthesis of well-shaped nanocrystals is significant importance for understanding the surface-related properties as well exploration potential applications. Herein, CeO2 nanorods and nanocubes were selectively synthesized using cerium(III) chloride nitrate precursor, respectively. Counter anions cerium source crucial to shapes resulting products. Intriguingly, as-synthesized could be converted into by addition an appropriate amount NO3− ions hydrothermal reaction. The are...