Silicon/carbon nanotube composites

Fabrication of Barium Aluminosilicate-Silicon Nitride-Carbon Nanotube Composites... 

In addition to growth of SiNWs, one-dimensional composite structures prepared by vacuum deposition of silicon clusters on CNTs also have been investigated. Hybrid silicon/carbon nanotube one-dimensional nanostructures were synthesized using a two-step CVD process (see Fig. 15.8) [18]. The spaces between the CNTs, formed through controlled nucleation in the first deposition step, allow for subsequent penetration of silane gas and a homogenous deposition of silicon clusters on the surfaces of the CNTs during the second CVD deposition step. The hybrid silicon/CNTs exhibit a high reversible capacity of 2,000 mAh/g with a 0.15% capacity loss per cycle over 25 cycles. When compared with commercially available silicon particles, in situ prepared silicon by CVD always has a smaller irreversible capacity loss in the first cycle. This may be related to the reduced amount of SiOx on the surface of the silicon particles which usually traps lithium in... 

Chou SL, Zhao Y, Wang J-Z, Chen ZX, Liu H-K, Dou S-X (2010) Silicon/single-walled carbon nanotube composite paper as a flexible anode material Iot lithium ion batteries. J Phys ChemC 114 15862-15867... 

Ren Y, Ding J, Yuan N, Jia S, Qu M, Yu Z (2012) Preparation and characterization of silicon monoxide/graphite/carbon nanotubes composite as anode for lithium-ion batteries. J Solid State Elecrochem 16 1453-1460... 

Balazsi, C., Konya, Z., Weber, F., Biro, L.P. and Arato, P., Preparation and characterization of carbon nanotube reinforced silicon nitride composites , Materials Science and Engineering, C Biomimetic and Supramolecular Systems, 2003, C23, 1133-1137. 

This chapter describes the preparation and examination of ceramic matrix composites realized by the addition of different carbon polymorphs (carbon black nanograins, graphite micrograins, carbon fibers and carbon nanotubes) to silicon nitride matrices. In the following sections, structural, morphological and mechanical characteristics of carbon-containing silicon nitride ceramics are presented. 

Concerning carbon nanotube-reinforced silicon nitride matrices, only a few reports have so far been published [19]. In this case, hot isostatic pressing has been used for composite processing. The carbon nanotubes remained in the microstructure only under low pressures (2 MPa) they connect the silicon nitride grains and produce a 15-37% improvement of the mechanical properties as compared with other carbon-filled samples (Fig. 19.11). Increase of pressure... 

The extraordinary mechanical, thermal and electrical properties of carbon nanotubes (CNT) have prompted intense research into a wide range of applications in structural materials, electronics, and chemical processing.Attempts have been made to develop advanced engineering materials with improved or novel properties through the incorporation of carbon nanotubes in selected matrices (polymers, metals and ceramics). But the use of carbon nanotubes to reinforce ceramic composites has not been very successful. So far, only modest improvements of properties were reported in CNTs reinforced silicon carbide and silicon nitride matrix composites, while a noticeable increase of the fracture toughness and of electrical conductivity has been achieved in CNTs reinforced alumina matrix composites. ... 

Although there have been considerable achievements in terms of crystalline ceramic composites reinforced with CNTs, no study has been carried out for glass-ceramics composites and no pressureless sintering technology was used either to address the complicated shape. The objective of this study was to fabricate dense barium aluminosilicate-silicon nitride-carbon nanotube... 

Nonconducting polymers are polymeric binders (epoxy, methacrylate, silicone, araldite) which confer to the conducting composite a certain physical, chemical, or biological stability, while the electrical conductivity is provided by the conducting filler (micro or nanoparticles of platinum, gold, graphite, carbon nanotubes, etc.). 

Lin H, Weng W, Ren J, Qiu L, Zhang Z, Chen P, et al. Twisted aligned carbon nanotube/ silicon composite fiber anode for flexible wire-shaped hthium-ion battery. Adv Mater 2014 26 1217. 

Since the initial discovery of carbon nanotubes (CNTs) by lijima et al. [122], much interest has been expressed in developing other inorganic nanostructured particles, due to the unique properties assigned to these nanostructures. Indeed, many potential applications have been proposed for silicon carbide nanostructures, including high-strength composites, nanosensors, and nanodevices. 

Therefore the three t)rpes of materials modified with carbon particles were prepared (i) carbon fibre-reinforced carbon composites (CERC), materials promising for hard tissue surgery, coated with a fullerene Ceo layer, (ii) terpolymer of polytetrafluoroethylene, polyvinyldifluoride and pol)rpropylene mixed with 4 wt. % of single or multi-walled carbon nanotubes and (iii) nanostructured or hierarchically micro- and nanostructured diamond layers deposited on silicon substrates [23]. 

Iqbal, N., Bilal, M., Sagar, A., Maqsood, A. Fabrication and characterization of multiwalled carbon nanotubes/silicon rubber composites. J. Appl. Polym. Sci. 128(4), 2439-2446 (2013)... 

Li, H., Wang, H., Wu, Y., Zhang, X., Zheng, J. Effect of the interfacial interaction on thermal oxidative stability of carbon nanotubes/silicone rubber composites. Sci. Adv. Mater. 5, 453-461 (2013)... 

Vast, L. Mekhalif, Z. Eonseca, A. Nagy, J. B. Delhalle, J., Preparation and Electrical Characterization of a Silicone Elastomer Composite Charged with Multi-Wall Carbon Nanotubes Functionalized with 7-Octenyltrichlorosilane. Comp. Sci. Tech. 2007, 67, 880-889. 

---