Introduction Lithium-sulfur batteries are considered as a promising candidate for next-generation secondary batteries because of their high theoretical capacit y, safe operating voltage (2.15 V vs. Li/Li ), and low cost. Nevertheless, lithium-sulfur batteries suffer from capacity fading, which limits their widespread application, due to the insulating nature of sulfur and its reduced pro ducts and the dissolution of intermediate lithium polysul fides. To address these problems, carbon-based materials have been integrated with sulfur to enhance the conductivity and inhibit the polysulfide dissolutio n. Recently, graphene, a single-atom-thick carbon mate rial with superior electrical conductivity and mechanica l flexibility, has been successfully applied in lithi um-sulfur batteries. While graphene-sulfur composite cathodes  demonstrate promising electrochemical performance, their synthesis is usually complicated and challeng ing for large-scale application. On the other hand, the sol utionbased synthesis without heat treatment produces lar ge crystalline sulfur particles, resulting in low util ization of active materials and poor rate performance. Herein, we report hydroxylated graphene nanosheets as a substr ate to produce graphene-amorphous sulfur nanocomposites, exhibiting superior cyclability at high rates, by a facile in situ deposition method at room temperature.

Hydroxylated Graphene-Sulfur Nanocomposites for High-Rate Lithium-Sulfur Batteries

The effect of functionalisation method on the stability and the thermal conductivity of nanofluid hybrids of carbon nanotubes/gamma alumina

Introduction to Nanoparticle Film Formation by Electrophoresis.- Electrophoretic Aggregation and Manipulation of Nanomaterials.- Dielectrophoretic 1D & 2D Manipulation and/or Trapping.- Dielectrophoresis of Nanomaterials in Microfluidics and Nanofluidics.- Theory and Modeling of Electrophoretic Deposition of Nanomaterials.- Electrophoretic Deposition of Luminescent Nanomaterials.- Electrophoretic Deposition of Carbon Nanotubes.- Electrophoretic Deposition of Nanomaterials for Solid Oxide Fuel Cell Applications.- Electrophoretic Deposition of Nano-ceramics for Electronics Applications.- Electrophoretic Deposition of Nano-ceramics for Biological Applications.- Electrophoretic Deposition of Metallic Nanowires, Nanotubes, and Nanorods.- Electrophoretic Deposition of Conducting Nanopolymers.- Industrial Applications and Procedures of Nanoparticle Electrophoretic Deposition.- Conclusions and Trajectories for the Future.

Electrophoretic deposition of nanomaterials

Ceramics suffer the curse of extreme brittleness and demand new design philosophies and novel concepts of manufacturing to overcome such intrinsic drawbacks, in order to take advantage of most of their excellent properties. This has been one of the foremost challenges for ceramic material experts. Tailoring the ceramics structures at nanometre level has been a leading research frontier; whilst upgrading via reinforcing ceramic matrices with nanomaterials including the latest carbon nanotubes (CNTs) and graphene has now become an eminent practice for advanced applications. Most recently, several new strategies have indeed improved the properties of the ceramics/CNT nanocomposites, such as by tuning with dopants, new dispersions routes and modified sintering methods. The utilisation of graphene in ceramic nanocomposites, either as a solo reinforcement or as a hybrid with CNTs, is the newest development. This article will summarise the recent advances, key difficulties and potential applications of the ceramics nanocomposites reinforced with CNTs and graphene.

https://www.mdpi.com/2079-4991/5/1/90/pdf

Recent Advances on Carbon Nanotubes and Graphene Reinforced Ceramics Nanocomposites.

Two-dimensional (2D) materials have recently drawn tremendous attention because of their novel properties and potential applications in high-speed transistors, solar cells, and catalysts. Few-layer SnSe is a new member of the 2D family with excellent performance in optoelectronic and thermoelectric devices. It is necessary to synthesize few-layer SnSe nanosheets in large scale for various applications. In this work, we develop a scalable liquid-phase exfoliation method to synthesize high-quality crystalline SnSe nanosheets. The morphology and microstructure of SnSe nanosheets are systematically investigated with high-resolution transmission electron microscopy, atomic force microscopy, and Raman spectroscopy. The thinnest nanosheets are bilayered. The optical absorption properties of SnSe nanosheets from near-infrared to ultraviolet light are studied. It is worth noting that the band gap of the nanosheets monotonically increases with the reduction of the nanosheet thickness. The electronic structure of Sn...

Liquid Exfoliation Few-Layer SnSe Nanosheets with Tunable Band Gap

Preparation, structure and properties of hydrothermally treated carbon nanotube/boehmite (CNT/γ-AlOOH) and densification with spark plasma sintering of Al 2 O 3 and CNT/Al 2 O 3 nanocomposites were investigated. Hydrothermal synthesis was employed to produce CNT/boehmite from an aluminum acetate (Al(OH)(C 2 H 3 O 2 ) 2 ) and multiwall-CNTs mixture (200 °C/2 h.). TEM observations revealed that the size of the cubic shape boehmite particles lies around 40 nm and the presence of the interaction between surface functionalized CNTs and boehmite particles acts to form ‘nanocomposite particles’. Al 2 O 3 and CNT/Al 2 O 3 compact bodies were formed by means of spark plasma sintering (SPS) at 1600 °C for 5 min using an applied pressure of 50MPa resulting in the formation of stable α-Al 2 O 3 phase and CNT–alumina compacts with nearly full density. It was also found that CNTs tend to locate along the alumina grain boundaries and therefore inhibit the grain coarsening and cause inter-granular fracture mode. The DC conductivity measurements reveal that the DC conductivity of CNT/Al 2 O 3 is 10 −4  S/m which indicate that there is a 4 orders of magnitude increase in conductivity compared to monolithic Al 2 O 3 . The results of the microhardness tests indicate a slight increase in hardness for CNT/Al 2 O 3 (28.35 GPa for Al 2 O 3 and 28.57 GPa for CNT/Al 2 O 3 ).

Ali Can Zaman

Papers

Carbon nanotube/boehmite-derived alumina ceramics obtained by hydrothermal synthesis and spark plasma sintering (SPS)

3-D micro-ceramic components from hydrothermally processed carbon nanotube–boehmite powders by electrophoretic deposition

OH and COOH functionalized single walled carbon nanotubes-reinforced alumina ceramic nanocomposites

Synthesis and electrophoretic deposition of hydrothermally synthesized multilayer TiO2 nanotubes on conductive filters

Polyol derived sulfonated solvothermal carbon for efficient dye removal from aqueous solutions