Commissariat a L'energie Atomique Et Aux Energies Alternatives

Universite De Tours

Cy Cergy Paris Universite

Nawa Technologies

Centre National De La Recherche Scientifique

Université De Limoges

Université François Rabelais

Université De Cergy Pontoise

Mathieu Pinault

Pascal Boulanger

Francois Tran Van

Fouad Ghamouss

Philippe Banet

Jérémie Descarpentries

Baptiste Pibaleau

Martine Mayne

Harald Hauf

Léa Darchy

Pierre-Henri Aubert

Emeline Charon

Aurélien Boisset

Martine Mayne-L'Hermite

Nathalie Herlin

Christian Sarrazin

François Tran Van

Mathieu Delmas

Sebastien Lagoutte

Martine Mayne L'Hermite

Claude Chevrot

Pierre Henry Aubert

Thomas Vignal

Jin Wang

Nicolas Debski

Cécile Reynaud

Johann Boucle

Cédric Desgranges

Martine Mayne L'HERMITE

Sébastien Lagoutte

A method for providing a substrate made of a porous carbonaceous material with vertically aligned carbon nanotubes, the method having a first step of depositing a ceramic underlayer on the substrate followed by a second step of synthesizing, by catalytic chemical vapour deposition, the vertically aligned carbon nanotubes on the substrate obtained after the first step, the carbon source necessary for the synthesis during this second step being injected in a direction substantially perpendicular to the plane of the substrate and at a pressure less than 8104 Pa (800 mbar). The use of the substrate for preparing an electrode such as a supercapacitor electrode.

Method for preparing a porous carbonaceous substrate having carbon nanotubes on its surface and its body

A method for the preparation of an electrode comprising a substrate made of an aluminium based material, vertically aligned carbon nanotubes and an electrically conductive polymer matrix, the method comprising the following successive steps: (a) synthesising, on a substrate made of an aluminium based material, a carpet of vertically aligned carbon nanotubes according to the technique of CVD (Chemical Vapour Deposition) at a temperature less than or equal to 650&#xb0; C.; (b) electrochemically depositing the polymer matrix on the carbon nanotubes from an electrolyte solution including at least one precursor monomer of the matrix, at least one ionic liquid and at least one protic or aprotic solvent. Further disclosed is the prepared electrode and a device for storing and returning electricity such as a supercapacitor comprising the electrode.

Method for the preparation of an electrode comprising an aluminium substrate, aligned carbon nanotubes and an electroconductive organic polymer, the electrode and uses thereof

The present invention relates to a method for preparing an electrode comprising a metal substrate, vertically aligned carbon nanotubes and a metal oxide deposited over the entire length of said vertically aligned carbon nanotubes, said method comprising the following consecutive steps: (a) synthesizing, on a metal substrate, a mat of vertically aligned carbon nanotubes; (b) electrochemically depositing the metal oxide on said carbon nanotubes from an electrolytic solution comprising at least one precursor of said metal oxide and at least one nitrate, said electrochemical deposition being carried out by a chronopotentiometry technique. The present invention also relates to the electrode thus prepared and to the uses thereof.

Method for preparing an electrode comprising a substrate, aligned carbon nanotubes and a metal oxide deposited by oxidative deposition, the electrode and uses thereof

The present invention relates to a method for preparing an electrode comprising a metal substrate, vertically aligned carbon nanotubes and a metal oxide deposited over the entire length of said vertically aligned carbon nanotubes, said method comprising the following consecutive steps: (a) synthesizing, on a metal substrate, a mat of vertically aligned carbon nanotubes; and (b) depositing a metal oxide matrix over the entire height of said vertically aligned carbon nanotube mat via spontaneous reduction at a temperature not exceeding 40&#xb0; C. The present invention also relates to said electrode and to the uses thereof.

Method for preparing an electrode comprising a substrate, aligned carbon nanotubes and a metal oxide deposited by reductive deposition

The present invention concerns a method for preparing a composite material comprising electrically conductive or semiconductive nano-objects of elongate shape and an electrically conductive polymer matrix, said method comprising a step consisting in electrochemically deposing said matrix on said nano-objects using a pulsed galvanostatic technique. The present invention also concerns the composite material thus obtained and uses thereof.

Method for preparing a composite, composite thus obtained and uses thereof

The invention relates to a method for the synthesis of a nanocomposite compound comprising TiOnanoparticles bound to carbon nanostructures, characterized in that it comprises the following steps: a) mixing carbon nanostructures and at least one TiOprecursor in a first liquid in order to form a stock suspension; b) nebulizing said stock suspension and transporting it into a reaction chamber by means of a gaseous flow; and c) carrying out laser pyrolysis of said stock suspension in said reaction chamber in order to simultaneously form TiOnanoparticles and graft them onto the nano structures.

[object Object]

The present invention concerns a method for preparing a suspension of carbon nanotubes in an aqueous solution comprising the following successive steps consisting of subjecting an aqueous solution containing carbon nanotubes and a surfactant to at least one cycle of freezing in liquid nitrogen and thawing; and subjecting said thawed solution to an ultrasound treatment. The present invention also concerns a suspension of carbon nanotubes, and in particular a suspension of long carbon nanotubes, that can be prepared by such a method.

Method for preparing a suspension containing carbon nanotubes and stable suspension obtained in this way

The invention relates to the growth of carbon nanotubes on a substrate, in particular a carbon or metal substrate on which the growth of such nanotubes is usually difficult. Accordingly, the invention includes a first phase that comprises depositing a ceramic sub-layer, followed by a second phase that comprises depositing carbon nanotubes on said sub-layer in a single step and in a single and same growth reactor. The growth can advantageously be carried out by chemical vapor deposition.

Growth of carbon nanotubes on carbon or metal substrates

Growing community of inventors

Antony, France

Mathieu Pinault