A5100659481- Graphene research and applications
- Crystallization and Solubility Studies
- Supercapacitor Materials and Fabrication
- X-ray Diffraction in Crystallography
- Molecular Junctions and Nanostructures
- Advancements in Battery Materials
- Covalent Organic Framework Applications
- Synthesis and Properties of Aromatic Compounds
- Electrocatalysts for Energy Conversion
- Metal-Organic Frameworks: Synthesis and Applications
- Conducting polymers and applications
- 2D Materials and Applications
- Advanced battery technologies research
- Advanced Photocatalysis Techniques
- Surface Chemistry and Catalysis
- Luminescence and Fluorescent Materials
- Organic Electronics and Photovoltaics
- Fuel Cells and Related Materials
- MXene and MAX Phase Materials
- Advanced Battery Materials and Technologies
- Fullerene Chemistry and Applications
- Quantum and electron transport phenomena
- Advanced Sensor and Energy Harvesting Materials
- Graphene and Nanomaterials Applications
- Crystallography and molecular interactions
TU Dresden
2016-2025
Center for Advancing Health
2015-2025
Max Planck Institute of Microstructure Physics
2021-2025
Jinzhou Medical University
2023-2025
Nanjing Tech University
2007-2025
Kunming University of Science and Technology
2025
Handan College
2025
Shandong University
2025
Shanghai Normal University
2025
Huazhong University of Science and Technology
2008-2024
We present the science and technology roadmap for graphene, related two-dimensional crystals, hybrid systems, targeting an evolution in technology, that might lead to impacts benefits reaching into most areas of society. This was developed within framework European Graphene Flagship outlines main targets research as best understood at start this ambitious project. provide overview key aspects graphene materials (GRMs), ranging from fundamental challenges a variety applications large number...
Three-dimensional (3D) N-doped graphene aerogel (N-GA)-supported Fe(3)O(4) nanoparticles (Fe(3)O(4)/N-GAs) as efficient cathode catalysts for the oxygen reduction reaction (ORR) are reported. The hybrids exhibit an interconnected macroporous framework of sheets with uniform dispersion (NPs). In studying effects carbon support on NPs ORR, we found that Fe(3)O(4)/N-GAs show a more positive onset potential, higher cathodic density, lower H(2)O(2) yield, and electron transfer number ORR in...
These materials are no dopes: Nitrogen-doped ordered mesoporous graphitic arrays (NOMGAs) prepared by a metal-free procedure exhibited higher electrocatalytic activity than the commercially available Pt–C catalyst (see plot), excellent long-term stability, and resistance to crossover effects in oxygen-reduction reaction (ORR). Graphite-like nitrogen atoms appear be responsible for electrochemical performance ORR. Detailed facts of importance specialist readers published as "Supporting...
A simplified prototype device of high-performance all-solid-state supercapacitors (ASSSs) based on 3D nitrogen and boron co-doped monolithic graphene aerogels (BN-GAs) is demonstrated for the first time. The resulting ASSSs show high specific capacitance, good rate capability, enhanced energy density or power density. Detailed facts importance to specialist readers are published as "Supporting Information". Such documents peer-reviewed, but not copy-edited typeset. They made available...
Abstract To achieve sustainable production of H 2 fuel through water splitting, low‐cost electrocatalysts for the hydrogen‐evolution reaction (HER) and oxygen‐evolution (OER) are required to replace Pt IrO catalysts. Herein, first time, we present interface engineering novel MoS /Ni 3 S heterostructures, in which abundant interfaces formed. For OER, such heterostructures show an extremely low overpotential ca. 218 mV at 10 mA cm −2 , is superior that state‐of‐the‐art OER electrocatalysts....
Mass production of high-quality graphene sheets is essential for their practical application in electronics, optoelectronics, composite materials, and energy-storage devices. Here we report a prompt electrochemical exfoliation into aqueous solutions different inorganic salts ((NH4)2SO4, Na2SO4, K2SO4, etc.). Exfoliation these electrolytes leads to with high yield (>85%, ≤3 layers), large lateral size (up 44 μm), low oxidation degree (a C/O ratio 17.2), remarkable hole mobility 310 cm2 V–1...
Abstract Heteroatom (N or S)‐doped graphene with high surface area is successfully synthesized via thermal reaction between oxide and guest gases (NH 3 H 2 S) on the basis of ultrathin oxide‐porous silica sheets at temperatures. It found that both N S‐doping can occur annealing temperatures from 500 to 1000 °C form different binding configurations edges planes graphene, such as pyridinic‐N, pyrrolic‐N, graphitic‐N for N‐doped thiophene‐like S, oxidized S S‐doped graphene. Moreover, resulting...
Micro-supercapacitors are important on-chip micro-power sources for miniaturized electronic devices. Although the performance of micro-supercapacitors has been significantly advanced by fabricating nanostructured materials, developing thin-film manufacture technologies and device architectures, their power or energy densities remain far from those electrolytic capacitors lithium batteries. Here we demonstrate graphene-based in-plane interdigital on arbitrary substrates. The resulting deliver...
A family of mesoporous nonprecious metal (NPM) catalysts for oxygen reduction reaction (ORR) in acidic media, including cobalt-nitrogen-doped carbon (C-N-Co) and iron-nitrogen-doped (C-N-Fe), was prepared from vitamin B12 (VB12) the polyaniline-Fe (PANI-Fe) complex, respectively. Silica nanoparticles, ordered silica SBA-15, montmorillonite were used as templates achieving structures. The most active catalyst fabricated VB12 nanoparticles exhibited a remarkable ORR activity medium (half-wave...
Sandwich-like, graphene-based carbon nitride nanosheets (G–CN), among many other advantages, show an enhanced electrical conductivity. Oxygen atoms can thus access the catalyst surface easily and rapid diffusion of electrons in electrode during oxygen reduction process is facilitated. G–CN hence serve as metal-free electrocatalysts for reactions (ORR) with excellent performance. Detailed facts importance to specialist readers are published "Supporting Information". Such documents...
Three-dimensional graphene-based frameworks (3D-GFs) with hierarchical macro- and meso-porous structures are presented. The interconnected macropores derived from hydrothermally assembled 3D graphene aerogels (GAs), while the mesopores generated by silica networks uniformly grown on surface of graphene. resulting 3D-GFs exhibit narrow mesopore size distribution (2-3.5 nm), high area, low mass density. These intriguing features render a promising template for creating various porous...
Abstract Various platinum-free electrocatalysts have been explored for hydrogen evolution reaction in acidic solutions. However, economical water-alkali electrolysers, sluggish water dissociation kinetics (Volmer step) on results poor hydrogen-production activities. Here we report a MoNi 4 electrocatalyst supported by MoO 2 cuboids nickel foam (MoNi /MoO @Ni), which is constructed controlling the outward diffusion of atoms annealing precursor NiMoO foam. Experimental and theoretical confirm...
Storage shells: The assembly of negatively charged graphene oxide and positively nanoparticles by electrostatic interactions, subsequent chemical reduction, leads to metal oxides encapsulated in flexible ultrathin shells (see picture). These electrochemically active show a remarkable lithium storage capacity, with an excellent cycle performance. Detailed facts importance specialist readers are published as "Supporting Information". Such documents peer-reviewed, but not copy-edited or...
A reliable route for preparing highly crumpled nitrogen-doped graphene nanosheets (C-NGNSs) with ultrahigh pore volume was developed. The unique electrochemical properties of C-NGNSs make them a promising electrode supercapacitors high capacity, excellent rate capability, and long-term stability. Detailed facts importance to specialist readers are published as "Supporting Information". Such documents peer-reviewed, but not copy-edited or typeset. They made available submitted by the authors....
Nanographenes, namely polycyclic aromatic hydrocarbons (PAHs) with nanoscale dimensions (>1 nm), are atomically precise cutouts from graphene. They represent prime models to enhance the scope of chemical and physical properties graphene through structural modulation functionalization. Defined nitrogen doping in nanographenes is particularly attractive due its potential for increasing number π-electrons, possibility introducing localized antiaromatic ring elements. Herein we present...
Abstract Owing to its earth abundance, low kinetic overpotential, and superior stability, NiFe‐layered double hydroxide (NiFe‐LDH) has emerged as a promising electrocatalyst for catalyzing water splitting, especially oxygen evolution reaction (OER), in alkaline solutions. Unfortunately, result of extremely sluggish dissociation kinetics (Volmer step), hydrogen (HER) activity the NiFe‐LDH is rather poor environment. Here novel strategy demonstrated substantially accelerating by partially...
Multicolor photoluminescent graphene quantum dots (GQDs) with a uniform size of ∼60 nm diameter and 2-3 thickness were prepared by using unsubstituted hexa-peri-hexabenzocoronene as the carbon source. This result offers new strategy to fabricate monodispersed GQDs well-defined morphology.
Abstract Graphene, an individual two‐dimensional, atomically thick sheet of graphite composed a hexagonal network sp 2 carbon atoms, has been intensively investigated since its first isolation in 2004, which was based on repeated peeling highly oriented pyrolyzed (HOPG). The extraordinary electronic, thermal, and mechanical properties graphene make it promising candidate for practical applications electronics, sensing, catalysis, energy storage, conversion, etc. Both the theoretical...
A 3D ternary hybrid containing Co<sub>0.85</sub>Se nanosheet-array and NiFe-LDH grown on electrochemically exfoliated graphene was synthesized for highly-efficient overall water-splitting.’
A novel approach to functionalize graphene with large aromatic donor and acceptor molecules consisting of nanographene units is presented, producing an unprecedented class composites tunable electronic properties. The stability aqueous dispersion sheets greatly enhanced, a number monolayer double-layer could be facilely fabricated on the substrates Detailed facts importance specialist readers are published as "Supporting Information". Such documents peer-reviewed, but not copy-edited or...