A5101999747- Supercapacitor Materials and Fabrication
- Advancements in Battery Materials
- Advanced battery technologies research
- Graphene research and applications
- Advanced Photocatalysis Techniques
- Iron-based superconductors research
- Conducting polymers and applications
- Advanced Image and Video Retrieval Techniques
- Advanced Sensor and Energy Harvesting Materials
- Nanomaterials for catalytic reactions
- Physics of Superconductivity and Magnetism
- Topological Materials and Phenomena
- Advanced Battery Materials and Technologies
- Rare-earth and actinide compounds
- Heat Transfer and Optimization
- Electrocatalysts for Energy Conversion
- Heat Transfer and Boiling Studies
- Copper-based nanomaterials and applications
- MXene and MAX Phase Materials
- Electronic and Structural Properties of Oxides
- Microbial Fuel Cells and Bioremediation
- Image Retrieval and Classification Techniques
- Ammonia Synthesis and Nitrogen Reduction
- 3D Shape Modeling and Analysis
- Lipid Membrane Structure and Behavior
Czech Technical University in Prague
2023-2025
Harbin Engineering University
2010-2024
China University of Petroleum, East China
2019-2023
University of Science and Technology of China
2011-2022
China Academy of Engineering Physics
2021-2022
North China University of Science and Technology
2022
Laboratoire d'Informatique, du Traitement de l'Information et des Systèmes
2018
High Magnetic Field Laboratory
2011-2012
Chinese Academy of Sciences
2011
Daqing Normal University
2007
In recent years, tremendous research effort has been aimed at increasing the energy density of supercapacitors without sacrificing high power capability so that they reach levels achieved in batteries and lowering fabrication costs. For this purpose, two important problems have to be solved: first, it is critical develop ways design performance electrode materials for supercapacitors; second, necessary achieve controllably assembled supercapacitor types (such as symmetric capacitors...
Abstract Asymmetric supercapacitor with high energy density has been developed successfully using graphene/MnO 2 composite as positive electrode and activated carbon nanofibers (ACN) negative in a neutral aqueous Na SO 4 electrolyte. Due to the capacitances excellent rate performances of ACN, well synergistic effects two electrodes, such asymmetric cell exhibits superior electrochemical performances. An optimized can be cycled reversibly voltage range 0–1.8 V, maximum 51.1 Wh kg −1 , which...
Three-dimensional carbon nanotube/graphene sandwich structures with CNT pillars grown in between the graphene layers have been developed by chemical vapor deposition. The special structure endows high-rate transportation of electrolyte ions and electrons throughout electrode matrix, resulting excellent electrochemical performance this hybrid material.
We demonstrated the fabrication of functionalized graphene nanosheets via low temperature (300 °C) treatment graphite oxide with a slow heating rate using Mg(OH)2 as template. Because its dented sheet high surface area, certain amount oxygen-containing groups, and pore volume, as-obtained delivers both ultrahigh specific gravimetric volumetric capacitances 456 F g(-1) 470 cm(-3), almost 3.7 times 3.3 higher than hydrazine reduced graphene, respectively. Especially, obtained capacitance is...
We report on the fabrication of 3D carbonaceous material composed 1D carbon nanofibers (CNF) grown 2D graphene sheets (GNS) via a CVD approach in fluidized bed reactor. Nanographene-constructed contain many cavities, open tips, and platelets with edges exposed, providing more extra space for Li(+) storage. More interestingly, nanochannels consisting arrange almost perpendicularly to fiber axis, which is favorable lithium ion diffusion from different orientations. In addition, interconnected...
Hierarchical porous Ni(OH)2 nanoflakes anchored on graphene sheets has been fabricated by a facile chemical precipitation approach. The as-prepared Ni(OH)2/graphene composite as electrode material for supercapacitors displays ultrahigh specific capacitance, superior cycling performance, and excellent rate capability. A maximum capacitance of 2194 F g−1 could be obtained at 2 mV s−1 in 6 M KOH aqueous solution. Meanwhile, the exhibits long cycle life along with 95.7% retained after 2000...
Layered double hydroxides (LDHs) are promising supercapacitor electrode materials due to their high specific capacitances. However, electrochemical performances such as rate performance and energy density at a current density, rather poor. Accordingly, facile strategy is demonstrated for the synthesis of integrated porous Co–Al hydroxide nanosheets (named GSP‐LDH) with dual support system using dodecyl sulfate anions graphene sheets structural conductive supports, respectively. Owing fast...
Abstract Limited by 2D geometric morphology and low bulk packing density, developing graphene‐based flexible/compressible supercapacitors with high specific capacitances (gravimetric/volumetric/areal), especially at rates, is an outstanding challenge. Here, a strategy for the synthesis of free‐standing graphene ribbon films (GRFs) high‐performance flexible compressible through blade‐coating interconnected oxide ribbons subsequent thermal treatment process reported. With ultrahigh mass...
High‐performance photocatalysts should have highly crystallized nanocrystals (NCs) with small sizes, high separation efficiency of photogenerated electron–hole pairs, fast transport and consumption photon‐excited electrons from the surface catalyst, adsorption organic pollutant, suitable band gap for maximally utilizing sunlight energy. However, design synthesis these versatile structures still remain a big challenge. Here, we report novel strategy ultrasmall graphene–ZnFe 2 O 4...
The observation of substantially enhanced superconductivity single-layer FeSe films on ${\mathrm{SrTiO}}_{3}$ has stimulated intensive research interest. At present, conclusive experimental data the corresponding electron-boson interaction is still missing. Here we use inelastic electron scattering spectroscopy and angle resolved photoemission to show that electrons in these systems are dressed by strongly polarized lattice distortions ${\mathrm{SrTiO}}_{3}$, indispensable nonadiabatic...
Abstract The intercalation capacity at low potential of carbon‐based anode plays a significant role for developing potassium ion batteries (PIBs) with high energy density. However, the inferior rate and cyclic performance caused by repeated insertion/extraction large K + tremendously restricts practical application PIBs. Herein, quasi‐graphite structure abundant edge‐nitrogen doping, micropores structure, enhanced graphite nanodomains via in situ polymerization oligoaniline in‐between...
We propose ▽-RANSAC, a generalized differentiable RANSAC that allows learning the entire randomized robust estimation pipeline. The proposed approach enables use of relaxation techniques for estimating gradients in sampling distribution, which are then propagated through solver. trainable quality function marginalizes over scores from all models estimated within ▽-RANSAC to guide network accurate and useful inlier probabilities or train feature detection matching networks. Our method...