Formation of free-standing carbon nanotube array on super-aligned carbon nanotube film and its field emission properties

Liu, Peng; Wei, Yang; Liu, Liang; Jiang, Kaili; Fan, Shanhui

doi:10.1007/s12274-012-0224-3

Cited by 10 publications

(6 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Fan and his coworkers spun-aligned MWCNT bundles to prepare freestanding electrothermal films, which can be heated to high temperature and show fast high-temperature response, but this film could be easily destroyed and is not suited for large-scale practical application [19][20][21][22][23] . MWCNT films fabricated by spin-coating of MWCNT aqueous solution also showed good electrothermal performance, but have a large sheet resistance [24] .…”

Section: Introductionmentioning

confidence: 99%

Flexible carbon nanotube/polyurethane electrothermal films

Luo

Lü

Zhang

et al. 2016

Carbon

109

View full text Add to dashboard Cite

Carbon nanotube (CNT)-based composites are ideal materials for electrothermal applications because of their lightweight, excellent conductivity, heat sensitivity, and easy processability. In this study, high-performance electrothermal films were synthesized by a novel layer-by-layer method. Electrothermal films were prepared by pouring CNT solution into the designed mold and subsequent curing of thermoplastic polyurethane (TPU) applied on the CNT layer. The flexible films showed sensitive electrothermal performance, and a steady-state temperature of ~140 °C could be reached at 10 V. In addition, temperature versus voltage and time-dependent temperature results show that the heating performance was strongly dependent on the CNT content and input power. Moreover, they can bear large deformations, which could be widely used in defogging and defrosting applications.

show abstract

Section: Introductionmentioning

confidence: 99%

Flexible carbon nanotube/polyurethane electrothermal films

Luo

Lü

Zhang

et al. 2016

Carbon

109

View full text Add to dashboard Cite

show abstract

“…The noble metal nanoparticles are generally anchored on a variety of supports, especially porous carbon materials. Compared with one‐dimensional carbon nanotubes or 2D graphene monolayers, 3D graphene with macro−/micro‐architectures, very high specific surface areas, strong mechanical strength, high electron conductivity and fast mass transport pathways is more suitable for serving as a catalyst support …”

Section: Introductionmentioning

confidence: 99%

One‐step synthesis of Pt@three‐dimensional graphene composite hydrogel: an efficient recyclable catalyst for reduction of 4‐nitrophenol

Zou

Wang

Zhao

et al. 2016

Applied Organom Chemis

View full text Add to dashboard Cite

A Pt@three-dimensional graphene (Pt@3DG) composite hydrogel with a unique porous nanostructure was prepared and used as an efficient, recyclable and robust catalyst for the reduction of 4-nitrophenol to 4-aminophenol under mild conditions. The influence of graphene architecture on catalytic activities was comparatively investigated by loading the same amount of Pt on reduced graphene oxide. Pt@3DG exhibits a very high catalytic activity owing to the three-dimensional macroporous framework with high specific surface area, numerous activation sites and efficient transport pathways. Moreover, catalyst separation can be easily achieved by simple filtration, and the catalyst can be reused for at least five runs, maintaining its high catalytic activity.

show abstract

“…[5][6][7][8][9][10] However, these valuable materials still have drawbacks, i.e., low conductivity and poor cyclability. 11,12 Carbon materials, e.g., activated carbon, 13 carbon aerogels, 14 carbon nanotubes, 15 carbon nanobres, 16 templated porous carbon 17 and graphene, 18,19 have also attracted a great deal of interest in recent years because of their extraordinary properties, such as high specic surface area, excellent electric conductivity and exibility. However, some deciencies for carbon materials should not be overlooked, such as a high interparticle resistance, a limited specic capacitance, and a low energy density.…”

Section: Introductionmentioning

confidence: 99%

One-step synthesis of a cobalt sulfide/reduced graphene oxide composite used as an electrode material for supercapacitors

2015

RSC Adv.

View full text Add to dashboard Cite

A simple, one-step approach has been developed to prepare a composite of cobalt sulfide/reduced graphene oxide (CoS/rGO) by using sodium thiosulfate as a sulfur source. The reduction of GO and the growth of CoS occurred simultaneously, forming a hybrid structure with CoS anchoring on rGO surface. The prepared CoS/rGO composite was applied as an electrode material and found to exhibit a high specific capacitance and rate capability, such as 550 F/g and 400 F/g at a current density of 1 A/g and 40 A/g respectively as well as excellent cyclic stability for 5000 cycles of 2 charge-discharge. The CoS/rGO composite could be a promising electrode material for a high performance supercapacitor. 3 improve the performances of each component but also create the new functions owning to the synergic effect originated from recombination. Recently, much effort has been put into the development of metal sulfides-based graphene composites [1,[20][21][22][23][24][25][26], in which the synthesis of the composite is usually multi-step and high-cost. In this study, a cobalt sulfides/reduced graphene oxide (CoS/rGO) composite has been synthesized via a simple, one-step hydrothermal method by using Na 2 S 2 O 3 as a sulfur source and hydrazine hydrate as a reductant. The electrochemical tests suggested that the obtained composite exhibited a high rate capability and good cycling stability as used for an electrode of a supercapacitor. Experimental Preparation of GOGO was prepared from graphite powder by a modified Hummers method [27].Specifically, 6 g of graphite was added into 40 mL of concentrated H 2 SO 4 , followed by adding 5 g of K 2 S 2 O 8 and 5 g of P 2 O 5 . The mixture was heated to 80 ℃ and maintained for 24 h. It was then diluted with 250 mL of distilled (DI) water. The product was filtered, washed with DI water for several times, and dried. The obtained pre-oxidized graphite was put into 150 mL of concentrated H 2 SO 4 with mechanical stirring, and to which, at the same time, 30 g of KMnO 4 powder was slowly added under ice-bath. After being stirred at 35 ℃ for 24 h, the products were transferred into 200 mL of distilled water, then to which 10 mL of 30 % H 2 O 2 was added drop by drop. The obtained GO suspension was centrifuged. The precipitate was washed with 1 L of a 1:10 HCl solution, and then dialyzed for a week to remove acids and ions. Synthesis of CoS/rGO composite80 mg of the as-prepared GO was dispersed into 70 mL of DI water under ultrasound for 4 h to form a uniform dispersion. Then, 1 mmol of CoCl 2 ·6H 2 O was added into the above dispersion under stirring, followed by adding 0.5 mmol of Na 2 S 2 O 3 ·5H 2 O. After stirred for 0.5 h, the mixture was added with 2 mL of hydrazine hydrate, transferred into a 100 mL of Teflon-lined autoclave and then heated at 180℃for 12 h. The produced CoS/rGO was centrifuged, washed with DI water and ethanol each for several times and dried in a vacuum oven at 60 ℃. CoS was also prepared by using the same method without GO as a comparison. Material CharacterizationsX-ray diffra...

show abstract

Formation of free-standing carbon nanotube array on super-aligned carbon nanotube film and its field emission properties

Cited by 10 publications

References 30 publications

Flexible carbon nanotube/polyurethane electrothermal films

Flexible carbon nanotube/polyurethane electrothermal films

One‐step synthesis of Pt@three‐dimensional graphene composite hydrogel: an efficient recyclable catalyst for reduction of 4‐nitrophenol

One-step synthesis of a cobalt sulfide/reduced graphene oxide composite used as an electrode material for supercapacitors

Contact Info

Product

Resources

About