A5101926457- Advancements in Battery Materials
- Supercapacitor Materials and Fabrication
- Advanced Battery Materials and Technologies
- Zeolite Catalysis and Synthesis
- Computational Drug Discovery Methods
- Advanced Battery Technologies Research
- Advanced Photocatalysis Techniques
- Analytical Chemistry and Chromatography
- Perovskite Materials and Applications
- Catalytic Processes in Materials Science
- Spectroscopy and Chemometric Analyses
- Mesoporous Materials and Catalysis
- Conducting polymers and applications
- Click Chemistry and Applications
- Covalent Organic Framework Applications
- Metal-Organic Frameworks: Synthesis and Applications
- MXene and MAX Phase Materials
- Catalysis for Biomass Conversion
- HIV/AIDS drug development and treatment
- Electrocatalysts for Energy Conversion
- Graphene research and applications
- Machine Learning in Materials Science
- Spectroscopy and Quantum Chemical Studies
- Copper-based nanomaterials and applications
- Organic Electronics and Photovoltaics
Chinese Academy of Sciences
2014-2024
Shanghai Institute of Organic Chemistry
2014-2024
Henan University of Technology
2024
Zhengzhou University
2022-2024
Zhongyuan University of Technology
2022-2024
University of Chinese Academy of Sciences
2024
Phillips 66 (United States)
2021-2023
Max Planck Institute for Chemical Energy Conversion
2022
Zhejiang University
2022
The University of Texas at San Antonio
2022
In this work, nitrogen-doped graphene nanosheets serving as lithium storage materials are presented. The were prepared by heat treatment of graphite oxide under an ammonia atmosphere at 800 °C for 2 h. Scanning electron microscopy, transmission Raman spectroscopy, and X-ray photoelectron spectroscopy employed to characterize the product with a doping level ca. 2% nitrogen, where N binding configuration includes 57.4% pyridinic, 35.0% pyrrolic 7.6% graphitic atoms. Galvanostatic...
A renewable and superior thermal-resistant cellulose-based composite nonwoven was explored as lithium-ion battery separator via an electrospinning technique followed by a dip-coating process. It demonstrated that such nanofibrous possessed good electrolyte wettability, excellent heat tolerance, high ionic conductivity. The cells using the displayed better rate capability enhanced capacity retention, when compared to those of commercialized polypropylene under same conditions. These...
Nitrogen-doped MnO/graphene nanosheets (N-MnO/GNS) hybrid material was synthesized by a simple hydrothermal method followed ammonia annealing. The samples were systematically investigated X-ray diffraction analysis, Raman spectroscopy, photoelectron transmission electron microscopy, and atomic force microscopy. N-doped MnO (N-MnO) nanoparticles homogenously anchored on the thin layers of GNS (N-GNS) to form an efficient electronic/ionic mixed conducting network. This nanostructured exhibited...
A sustainable, heat-resistant and flame-retardant cellulose-based composite nonwoven has been successfully fabricated explored its potential application for promising separator of high-performance lithium ion battery. It was demonstrated that this possessed good flame retardancy, superior heat tolerance proper mechanical strength. As compared to the commercialized polypropylene (PP) separator, such presented improved electrolyte uptake, better interface stability enhanced ionic conductivity....
One dimensional MnO2/titanium nitride nanotube coaxial arrays have been designed for a high performance electrochemical capacitive energy storage system based on the concept of fabricating an efficient, fast charge separation network. This nanostructured composite material was prepared by electrodepositing mesoporous MnO2 into TiN (TiN NTA), which are anodization Ti foil substrate and subsequent nitridation using ammonia annealing. The electrodeposited inside electrically conductive...
In this study, titanium nitride-vanadium nitride fibers of core-shell structures were prepared by the coaxial electrospinning, and subsequently annealed in ammonia for supercapacitor applications. These (TiN-VN) incorporated mesoporous structure into high electronic conducting transition hybrids, which combined higher specific capacitance VN better rate capability TiN. hybrids exhibited (2 mV s(-1), 247.5 F g(-1)) (50 160.8 g(-1)), promise a good candidate high-performance supercapacitors....
In this study, mesoporous TiN spheres with tunable diameter have been fabricated via a facile template-free strategy. Under ammonia atmosphere, TiO2 are directly converted into the addition of cyanamide to retain original morphology. The electrochemical performance resultant demonstrates that material can be promising electrode for nonaqueous supercapacitors high energy densities.
Inspired by Taichi, we proposed rigid-flexible coupling concept and herein developed a highly promising solid polymer electrolyte comprised of poly (ethylene oxide), (cyano acrylate), lithium bis(oxalate)borate robust cellulose nonwoven. Our investigation revealed that this new class possessed comprehensive properties in high mechanical integrity strength, sufficient ionic conductivity (3 × 10−4 S cm−1) at 60°C improved dimensional thermostability (up to 160°C). In addition, the iron...
Molybdenum nitride/nitrogen-doped graphene nanosheets (MoN/NGS) are synthesized and used as an alternative O2electrode for Li–O2 batteries. In comparison with electrocatalysts proposed previously, this hybrid cathode exhibits a high discharge potential (around 3.1 V) considerable specific capacity (1490 mA h g−1, based on carbon + electrocatalyst).
A novel pure organic heterostructure was constructed between g-C<sub>3</sub>N<sub>4</sub> and (FeTPP)<sub>2</sub>O as a photocatalyst for solar H<sub>2</sub> production from water splitting.
Developing efficient and wide spectrally acting photocatalysts for light-driven hydrogen production from water is highly desirable solar energy conversion. Herein, diketopyrrolopyrrole (DPP) used to combine with triphenylamine (TPA), bipyridyl (bdy), biphenyl (bph) units construction of conjugated microporous polymer photocatalysts. Although the synthesized two polymers, DPP-bdy-TPA DPP-bph-TPA, have a similar framework structure, former bearing hydrophilic unit displays much better...
Donor–acceptor (D–A)-type photocatalysts containing the polycyclic aromatic donor (BTT-CPP) and nonpolycyclic (TTB-CPP) are designed synthesized. Their physicochemical properties thoroughly investigated. The photocatalytic hydrogen generation experiments show that both polymers exhibit distinct performance. BTT-CPP displays an attractive evolution rate (HER) of 37,866 μmol g–1 h–1 without further addition metal co-catalyst, one highest values reported for organic photocatalysts. optimal HER...
Vanadium nitride and nitrogen-doped graphene nanosheet (G) hybrid materials were prepared by a facile sol–gel method combined with thermal treatment at 800 °C under ammonia atmosphere. It was found that VN nanoparticles adhered to the surface of nanosheets and/or embedded in layers material (VN-G). This nanostructured promises an efficient electronic ionic conducting network, which exhibits dramatically increased specific capacities after rate capability test comparison original value same...
As compared to <bold>P0</bold>, <bold>P2</bold> showed a 160-fold performance improvement, much larger than 3.6-fold for <bold>P1</bold>.
A core-shell structured polysulfonamide@polyvinylidene fluoride-co-hexafluoropropene composite nonwoven separator was exploited for lithium ion battery via coaxial electrospinning technique enhanced safety characteristic of battery. Polysulfonamide (PSA) and polyvinylidene (PVDF-HFP) were used as the inner (core) outer (shell) layer, respectively. Compared with commercial polypropylene (PP) separator, PSA@PVDF-HFP manifested higher porosity, better electrolyte wettability superior thermal...
An electrode material consisting of graphene decorated with molybdenum dioxide nanoparticles (G–MoO2) is developed. The exhibits not only a high specific capacitance but also an excellent cycling performance as well good rate capability in lithium ion capacitors (LICs). the G–MoO2 containing 10 wt% G reaches 624.0 F g−1 at current density 50 mA g−1, much higher than 269.2 for MoO2 particles alone. Even 1000 173.2 obtained. retention remains 91.2% after 500 cycles. Moreover, provides energy...
Hierarchical micro/nano-structured TiN spheres (micro/nano-TiNs) counter electrodes are fabricated by coating hierarchical micro/nano-TiO2 paste onto Ti foil followed a nitridation reaction. Compared with particulate and flat electrodes, the as-prepared micro/nano-TiNs electrode based dye-sensitized solar cells (DSCs) delivers significantly improved photovoltaic performances due to presence of structure. In particular, VOC is enhanced about 60 mV, which may be predominantly attributed...
An aramid membrane with good electrolyte wettability, high ionic conductivity, excellent inflame retarding property and superior thermal resistance has been successfully fabricated via a facile papermaking process for improving the safety characteristic of lithium ion battery. The endows cobalt oxide (LiCoO2)/graphite cell cycle performance better interfacial flexibility. In addition, iron phosphate (LiFePO4)/lithium using such exhibited stable charge–discharge profiles satisfactory cycling...
Abstract A composite core@sheath nanofibrous separator for lithium ion batteries is fabricated via coaxial electrospinning, using thermosetting PI as the core material and PVDF‐HFP sheath material. It demonstrated that PI@PVDF‐HFP nonwovens display remarkably improved tensile strength up to 53 MPa high thermal stability 300 °C. The electrochemical characterization shows cells separators better rate capability cycling capacity retention. Considerable mechanical strength, higher preferable...