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Merck

773840

Sigma-Aldrich

Kohlenstoffnanoröhrchen, mehrwandig

≥98% carbon basis, O.D. × I.D. × L 10 nm ± 1 nm × 4.5 nm ± 0.5 nm × 3-~6 μm, TEM, avg. no. of layers, 6 ‑ 8

Synonym(e):

MWCNT, MWNT, Mehrwandiges Kohlenstoffnanoröhrchen

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About This Item

CAS-Nummer:
UNSPSC-Code:
12352103

Assay

≥98% carbon basis

Form

powder

Leistungsmerkmale

avg. no. of layers 6 ‑ 8

AD × ID × L

10 nm ± 1 nm × 4.5 nm ± 0.5 nm × 3-~6 μm, TEM

Oberflächenbereich

280-350 m2/g , BET

mp (Schmelzpunkt)

3652-3697 °C (lit.)

Dichte

~2.1 g/mL at 25 °C (lit.)

Schüttdichte

0.068 g/cm3

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Allgemeine Beschreibung

Number of Walls: 6-8 tube walls (typically). Multi walled carbon nanotubes (MWNTs, CNTs) were prepared by chemical vapor deposition (CVD) using cobalt and molybdenum as catalysts (CoMoCAT).In chemical vapor deposition (CVD), a volatile precursor undergoes thermal decomposition at elevated temperatures to form a solid deposit on a substrate. Compared to other techniques CVD produces greater yield of carbon nanotubes. Morphology and structure of the nanotubes can be easily tuned using CVD technique. The CNTs formed can be formed in bundles over a catalyst support or in patterns over substrates.1

Anwendung

Carbon nanotube, multi-walled (MWNT) belongs to the class of carbonaceous materials with excellent physiochemical, thermo-mechanical and electrochemical properties. This material can be used in a variety of sustainable energy applications such as solar cells, photocatalysis, biosensor, gas sensor, supercapacitor and as a filler that acts as a reinforcement to improve the mechanical property of composites.
New generation of specialty multi-walled carbon nanotubes enable polymer composites with higher conductivity;easier to disperse and mechanical properties for advanced applications like conductive polymers or Li-ion battery cathodes.

Physikalische Eigenschaften

Aspect ratio: > 350-550 (determined by AFM)

Angaben zur Herstellung

CoMoCAT Catalytic Chemical Vapor Deposition (CVD) Method

Rechtliche Hinweise

Product of SouthWest NanoTechnologies;Inc. CoMoCAT® is a Registered Trademark of SouthWest NanoTechnologies;Inc.
 
SWeNT is a registered trademark of Southwest NanoTechnologies;Inc.
CoMoCAT is a trademark of Chasm Advanced Materials

Lagerklassenschlüssel

11 - Combustible Solids

WGK

WGK 3

Flammpunkt (°F)

Not applicable

Flammpunkt (°C)

Not applicable


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B. Jin et al.
Electrochemical Communications, 10, 10537-11540 (2008)
K. Sheem et al.
Journal of Power Sources, 158, 1425-1430 (2006)
Olli Pitkänen et al.
Nanotechnology, 31(49), 495403-495403 (2020-09-26)
There is ever increasing demand for flexible energy storage devices due to the development of wearable electronics and other small electronic devices. The electrode flexibility is best provided by a special set of nanomaterials, but the required methodology typically consists
S.K. Martha et al.
Journal of Power Sources, 189, 288-296 (2009)
Claudia Angélica Ramírez-Herrera et al.
Nanomaterials (Basel, Switzerland), 9(2) (2019-02-13)
The demand for multifunctional requirements in aerospace, military, automobile, sports, and energy applications has encouraged the investigation of new composite materials. This study focuses on the development of multiwall carbon nanotube (MWCNT) filled polypropylene composites and carbon nanofiber composite mats.

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