A5103059076- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Supercapacitor Materials and Fabrication
- Advancements in Battery Materials
- Metal-Organic Frameworks: Synthesis and Applications
- Advanced Battery Materials and Technologies
- Aerogels and thermal insulation
- Advanced Sensor and Energy Harvesting Materials
- Crystallography and molecular interactions
- Carbon Nanotubes in Composites
- thermodynamics and calorimetric analyses
- Electromagnetic wave absorption materials
- Luminescence and Fluorescent Materials
- Chemical and Physical Properties in Aqueous Solutions
- Photochromic and Fluorescence Chemistry
- Microplastics and Plastic Pollution
- Laser Material Processing Techniques
- Graphene research and applications
- Thermal Expansion and Ionic Conductivity
- Conducting polymers and applications
- Advanced battery technologies research
- biodegradable polymer synthesis and properties
- Polyoxometalates: Synthesis and Applications
- Nanocluster Synthesis and Applications
- Covalent Organic Framework Applications
Henan Normal University
2023-2024
Huazhong Agricultural University
2024
Nanjing University of Posts and Telecommunications
2024
Harbin Institute of Technology
2014-2023
Tianjin Medical University General Hospital
2023
Fujian Agriculture and Forestry University
2019-2021
Peking University
2016-2020
Fudan University
2017
State Key Laboratory of Surface Physics
2017
Harbin Normal University
2015-2017
Abstract Metal‐organic frameworks (MOFs) hybridized with a conductive matrix could potentially serve as sulfur host for lithium‐sulfur (Li‐S) battery electrodes; so far most of the previously studied hybrid structures are in powder form or thin compact films. This study reports 3D porous MOF@carbon nanotube (CNT) networks by grafting MOFs tailored particle size uniformly throughout CNT sponge skeleton. Growing larger‐size MOF particles to entrap network yields mutually embedded structure...
In this study, large-area hexagonal-packed Si nanorod (SiNR) arrays in conjunction with Au nanoparticles (AuNPs) were fabricated for surface-enhanced Raman spectroscopy (SERS). We have achieved ultrasensitive molecular detection high reproducibility and spatial uniformity. A finite-difference time-domain simulation suggests that a wide range of three-dimensional electric fields are generated along the surfaces SiNR array. With tuning gap diameter SiNRs, produced long decay length (>130 nm)...
Lithium–sulfur (Li–S) batteries are next-generation energy storage systems with high density, and the rate performance is a very important consideration for practical applications. Recent approaches such as introducing catalytic materials to facilitate polysulfide conversion have been explored, yet results remain unsatisfactory. Here, we present an optimized Li–S electrode featured by large amount of highly dispersed Co3S4 nanoparticles (∼10 nm in size) throughout hierarchical carbon...
Graphene nanoribbon aerogels are fabricated by directly unzipping multi-walled carbon nanotube sponges. These fascinating materials have potential applications as high performance nanocomposites and supercapacitor electrodes. As a service to our authors readers, this journal provides supporting information supplied the authors. Such peer reviewed may be re-organized for online delivery, but not copy-edited or typeset. Technical support issues arising from (other than missing files) should...
Graphene aerogels with excellent electromagnetic wave absorption properties are fabricated by using cigarette filters as templates <italic>via</italic> a simple dip-coating method.
Metal-organic frameworks (MOFs) have many promising applications in energy and environmental areas such as gas separation, catalysis, supercapacitors, batteries; the key toward those is controlled pyrolysis which can tailor porous structure, improve electrical conductivity, expose metal ions MOFs. Here, we present a systematic study on structural evolution of zeolitic imidazolate hybridized carbon nanotubes (CNTs) during carbonization process. We show that number typical products be...
Pollutant treatment is critical in modern society and often requires tedious workup expensive facilities. By virtue of structural diversity tunability, metal–organic frameworks (MOFs) have shown promise pollutant control. We herein report a powerful templated freeze-drying protocol for the fabrication multifunctional MOF hollow tubular structures both air liquid contaminants filtration. Various tube systems (e.g., "Janus", "coaxial" "cellular") are produced. Specially, multilayer coaxial...
Densely packed metal–organic framework (MOF) and carbon nanotube (CNT) hybrid materials with tailored hierarchical porous structures are prepared by <italic>in situ</italic> growth room temperature drying/shrinking for high-performance compact energy storage systems.
Abstract Achieving a high areal capacity is essential for the transfer of outstanding laboratory electrode results to commercial applications and also ensure there exists matched cathode anode properly tuned battery. Despite intensive efforts, most materials exhibit capacities lower than that graphite anodes (4 mA h cm −2 ). An effective low‐cost approach reported attain via an intense densification by compacting porous carbon nanotube sponge grafted with Co 3 O 4 nanoparticles. The hybrid...
Carbon fiber (CF) grafted with a layer of carbon nanotubes (CNTs) plays an important role in composite materials and other fields; to date, the applications CNTs@CF multiscale fibers are severely hindered by limited amount CNTs on individual CFs weak interfacial binding force. Here, monolithic consisting 3D highly porous CNT sponge macroscopic-thickness (up several millimeters), which is directly grown single CF, fabricated. Mechanical tests reveal high sponge-CF strength owing presence thin...
Bulk or meter-long fiber shaped aerogels containing a significant amount of nitrogen-doped graphene (N-graphene) sheets grafted on carbonized cellulose fibers were fabricated from raw cotton and urea.
Graphene oxide (GO) sheets have been assembled into various three-dimensional porous structures and composites, with potential applications in energy environmental areas. Here, we show the combination of GO chitosan (CTS) inorganic–organic heterocomposites as ∼3 mm diameter core–shell beads controlled microstructure. The spherical GO-CTS beads, made by a two-step freeze-casting method, consist core wrapped CTS shell abrupt interface; both parts high porosities (94–96%) mesopores volume...
Three-dimensional carbon nanotube (CNT) networks with high porosity and electrical conductivity have many potential applications in energy environmental areas, but the network structure is not very stable due to weak inter-CNT interactions. Here, we coat a thin polyaniline (PANI) layer on as-synthesized CNT sponge obtain mechanically electrically network, enable multifunctional applications. The resulting CNT/PANI serves as strain sensors, highly compressible supercapacitor electrode...
Abstract Supercapacitors are energy storage systems capable of fast charging and discharging, thus generating superior power density. Porous carbon with high surface area tunable pore size represents a promising candidate to construct ultrafast supercapacitors; so far, most porous carbon–based electrodes can only be charged moderate current density (100–200 A g −1 ), also significant capacitance loss at increasing rate. Here, it is shown that 3D aerogel consisting interconnected 1D...
Abstract One of the potential applications for carbon nanotube (CNT) sponge prepared through chemical vapor deposition (CVD) is as a strain sensor. However, sensitivity CNT strongly impeded by point‐to‐point contact between individual CNTs. A novel method proposed to introduce reduced graphene oxide (rGO) conducting bridge into sponge, in order dramatically improve contact. The (GO) coated onto polystyrene (PS) spheres forming suspension that infiltrated CVD‐derived under vacuum. PS are...
Hydrogenation and nanocrystallization of Ti6Al4V alloy were achieved by electrolytic hydrogenation SMAT processing. The hydride δ phase appeared when the time reached 4 h. grain size after surface below 35 nm processing was 2 Surface morphology roughness characterized AFM. diffusion bonding between alloys at low temperature under different parameters. It is demonstrated that porosity interface decreased correspondingly or extended. joint 0 24 h Then treatments combined. found there are more...
Pseudo-materials are effective in boosting the specific capacitance of supercapacitors, but during service their degradation may also be very strong, causing reduced cycling stability. Here, we show that a carbon nanotube sponge grafted by two conventional pseudo-polymer layers sequence can serve as porous supercapacitor electrode with significantly enhanced stability compared single polymer grafting. Creating conformal coatings on surface and resulting double-sheath configuration important...
Novel β-furan-fused bis(difluoroboron)-1,2-bis((1H-pyrrol-2-yl)methylene)hydrazine (BOPHY) fluorescent dyes (F-BOPHY1–3) were prepared through an efficient process, and their structures confirmed by 1H NMR spectroscopy, 13C MALDI-TOF HRMS, element analysis. Their optical properties then characterized UV–vis absorption photoluminescence (PL) spectroscopy. The PL spectra of the shifted to longer wavelengths relative those BOPHY because fusion furan rings, which extended π-conjugation...
Abstract Calibration of titration calorimeters is an ongoing problem, particularly with reaction vessel volumes < 10 mL in which electrical calibration heater positioned outside the calorimetric vessel. Consequently, a chemical known enthalpy change must be used to accurately calibrate these calorimeters. This work proposes use standard solutions potassium acid phthalate (KHP) titrated into excess sodium hydroxide (NaOH) or tris(hydroxymethyl)aminomethane (TRIS) as reactions determine...
Developing advanced electrode materials for potassium-ion batteries (PIBs) is an emerging research area in recent years; so far, several strategies such as heteroatom doping into carbon, increasing interlayer spacing, or creating amorphous region graphite have been investigated. Here, we studied the effect of sub-nanopores a porous-carbon aerogel with pore size distribution centered at around 0.8 nm and achieved outstanding PIB performance including long cycling stability (particularly small...