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The seeking of the intrinsically ferromagnetic materials has been extended to the two-dimensional transition metal carbide MXene in recent years. However, as the first synthesized member in this family, the experimental study of the magnetism on Ti 3 C 2 T x is rare. Herein, monolayer MXene Ti 3 C 2 T x was prepared by LiF/HCl etching method and annealed in H 2 . The magnetic properties of the as-prepared...
Thanks to their light-weight, wearing comfort, and amenability to be woven into textiles, solid-state fiber supercapacitors (FSCs) have been considered as promising energy storage devices for wearable electronics. Carbon fibers (CFs) have the merits of both superior mechanical strength and conductivity, excellent flexibility, doped by heteroatoms, good knittability/weavability, and most importantly...
Microwave absorbing materials with lightweight, strong absorption, broad bandwidth and thin matching thickness have gained considerable attentions in recent years. Herein, C-doped SiC ceramic nanocomposites with heterostructure were successfully fabricated via solvothermal method using renewable glucose as the carbon source. Such nanocomposites show different permittivity dependent on glucose contents...
It is highly desirable to develop low-cost and high-efficient non-precious electrocatalysts for oxygen reduction reaction (ORR) in attempt to replace the expensive Pt based catalysts for fuel cells and metal-air batteries. Herein, a novel, facile and cost-effective strategy is reported to in situ synthesize isolated single iron (Fe) atoms anchored on nitrogen doped carbon (Fe-ISA/NC) with renewable...
Microstructure is playing a more and more important role in upgrading the performance of microwave absorption materials (MAMs) nowadays. Herein, we demonstrate the successful synthesis of multi-chamber carbon microspheres (MCCMs) with abundant interior cavities. The reflection loss (RL) characteristics of MCCMs and the effect of microstructure on electromagnetic properties have been discussed thoroughly...
Heteroatom-doped carbon materials have emerged as attractive catalysts for peroxymonosulfate (PMS) activation and environment remediation recently due to its low cost and non-toxicity. In this study, novel N, P, and S tri-doped hollow carbon shells (NPSC) are elaborately fabricated using ZIF-67 and poly (cyclotriphosphazene–co-4,4′- sulfonyldiphenol) (PZS) as precursors. NPSC obtained at 700 °C shows...
While approaches have been successfully devised to optimize the power factor of inorganic thermoelectric (TE) materials, the understanding and control of TE performance of organic composite materials are however still rudimentary due to their complicated structures and weak interfacial interactions. We report a facial method to tailor the interfacial interaction of amine-functionalized carbon nanotubes...
While metal is commonly used to construct electromagnetic metamaterials, herein carbon aerogel constitutes the first example of application as building blocks for metamaterials of low density. The carbon aerogel is synthesized by the sol-gel polymerization of resorcinol with formaldehyde followed by supercritical fulid drying and carbonization. The resulting nanostructure of carbon aerogel is adjusted...
The technical advance of plasma enhanced chemical vapor deposition (PECVD) exhibits the potential to grow large-area high-quality graphene films at relatively low growth temperature, which is beneficial to the fabrication of graphene-based electronic devices/sensors and transparent electrode. However, it remains a challenge to overcome the degradation of graphene quality during growth by PECVD, due...
Hydrotalcite-like CoFeAl-layered double hydroxide sheets (CoFeAl-LDH) are employed to construct the CoFeAl-LDH/G hybrids via the sufficient metal ions absorption and subsequent in-situ growth on graphene oxide (GO) surfaces. The uniform integration not only retains the inherent excellent properties of GO, but also overcomes some weakness like shallow skin depth and severe layers restack. In addition,...
Graphene oxide (GO) is the most widely used precursor for graphene materials because of its excellent processibility and unique solution chemistry. In a GO solution, the solvent provides a specific chemical environment to affect the conversion of GO into graphene materials. Herein, we report that organic solvents are good media for producing graphene materials with improved properties. Particularly,...
Lithium sulfur (LiS) batteries are promising alternatives to conventional Li-ion batteries in terms of specific capacity and energy. However, the technical challenges raised from the soluble polysulfide (PS) in organic electrolyte deter their implementation in practical applications. Nanoengineered structure and chemical adsorptive materials hold great promise in mitigating the PS migration problem...
Electrochemical exfoliation of graphite has emerged as a potentially scalable approach to prepare graphene. However, most of exfoliated graphite particles are inhomogeneous and multilayer stacked structures including tens of layers thick graphite exist inevitably, thus the yield of few-layer graphene remains limited. In this study, we here propose a high-yield, scalable electrochemical exfoliation...
In this study, the mesoporous carbon hollow spheres (MCHS) have been prepared through a facile hard-template etching strategy. It is confirmed that the tetrapropoxysilane (TPOS) has distinct influence on the dispersity, hollow cavity and shell thickness of MCHS. Furthermore, MCHS with different construction can regulate dielectric and microwave absorption effectively. We also proved that the generated...
Carbon nanotube (CNT) is an attractive material to many scientists worldwide due to its outstanding thermal and mechanical properties. In this paper, magnetic carbon nanotube (mCNT) with excellent magnetic response was successfully synthesized by coating iron oxide particles. In order to improve the thermal conductivity and mechanical strength of polyvinylidene fluoride (PVDF) composite, mCNT was...
Graphene microtube has a robust potential application in gas separation, catalysis, water treatment and electronics. At present it remains two big challenges: high persistence of the tubular structure and high quality of the microtube. Here, a novel electrochemical technique was proposed, in which graphene oxides can be simultaneously deposited and reduced on a template wire at room temperature. After...
Nitrogen doped carbon materials, as the most promising non-metal electrocatalyst for oxygen reduction reaction (ORR), have attracted great attention because of their catalytic activities approaching to that of commercial Pt/C, good ethanol tolerance, low price and chemical stability. Here, we demonstrate the conjugated polymer-mediated synthesis of a series of nitrogen doped carbon nanoribbons (NDCNRs)...
Flexible and thin energy storage devices have attracted enormous attentions. An easy and large-scale method has been employed to fabricate flexible and interwoven N, P dual-doped carbon fibers/graphitic carbon nitride (huCP/g-C3N4) using filter paper as a precursor. The huCP/g-C3N4 composite as self-supporting anode for lithium ion batteries exhibits high reversible capacities of 1030 mAh g−1 after...
Flexible free-standing materials make the electrode fabrication process simple in comparison with the conventional binder-enriched electrodes, especially for those with desirable mechanical strength. In the present work, the crosslinked multi-walled carbon nanotubes (C-CNTs) films with tensile strength of >1.75 MPa, were prepared by facile filtering the dispersion of the micrometer-scaled 3-D framework...
Lithium-sulfur (Li-S) batteries are considered one of the most promising energy storage systems because of their high energy density and natural abundance of sulfur. However, the inferior cycle stability and low Coulombic efficiency mainly due to the dissolution of ploysulfides impede the practical application of Li-S batteries. Herein, a novel three-dimensional clew-like N-doped multiwalled carbon...
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