Commissariat a L'energie Atomique

Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Etat Francais

Centre National De La Recherche Scientifique

Jean Dijon

Raphael Ramos

Thierry Leroux

Adeline Fournier

Hélène Le Poche

Christine Ebel

Brigitte Montmayeul

Bernard Andre

Florence Ricoul

Thomas Goislard De Monsabert

Frank Fournel

Jean-Frederic Clerc

Bernard Diem

Brigitte Rafin

Robert Meyer

Serge Gidon

Jean-Yves Laurent

Philippe Pantigny

Françoise Vinet

Patrick Chaton

Etienne Quesnel

Nicolas Sarrut

Jean Pinson

Arnaud Morin

Pierre Mur

Pierre Nicolas

Aime Perrin

Celine Barchasz

Céline Barchasz

Denis Mariolle

Paul-Henri Haumesser

Pascal Schott

Jean-Yves Robic

Bernard Rolland

Louis Gorintin

Francois Levy

Emmanuelle Rouviere

Francoise Geffraye

François Levy

Patrick Judeinstein

Anastasia Tyurnina

Jean-Marc Zanotti

Quentin Berrod

Agnès Fonverne

Filippo Ferdeghini

Sebastien Liatard

Aimé Perrin

Xavier Joyeux

Erik Duloisy

Yoann Dini

Hanako Okuno

Jérôme Gavillet

Philippe Baclet

Raphaël Ramos

Sébastien Liatard

Method for metallising a porous structure made of carbon material, the method comprising the following steps: supplying a porous structure made of carbon material, immersing the porous structure in a solution comprising an ionic liquid, formed by a cation and an anion, and a metal precursor, placing the porous structure in a vacuum, immersed in the solution, in such a way as to cause the solution to penetrate into the porosity of the porous structure, adding a hydrogenated reducing agent, in such a way as to metallise the porous structure to within the porosity of the porous structure.

Method for metallising a porous structure made of carbon material

A multilayer structure, of use as composite diffusion layer in a proton-exchange membrane fuel cell, including at least one mat of carbon nanotubes having a unit diameter of less than or equal to 20 nm, defining at least one face of the structure, the mat of carbon nanotubes being superposed on a support based on carbon fibres. It also relates to a process for preparing such a multilayer structure and to the use thereof for an electrode of a PEMFC.

Multilayer structure incorporating a mat of carbon nanotubes as diffusion layer in a PEMFC

The subject of the invention is the use, as catalyst support sublayer in a process for growing carbon nanotubes by chemical vapour deposition (CVD), of a multilayer stack formed of alternating layers of silica and of alumina, each of the layers having a thickness of less than or equal to 10 nm and consisting of one or more superposed atomic monolayer(s). It also relates to a multilayer structure comprising a substrate which has, on at least one of its faces, such a multilayer stack, and also to the use thereof for the growth of a mat of carbon nanotubes, which are in particular spinnable, by chemical vapour deposition, preferably hot-filament chemical vapour deposition.

Multilayer stack for the growth of carbon nanotubes by chemical vapor deposition

A porous electrolyte membrane including a first main surface and a second main surface that are separated by a thickness, where carbon nanotubes, defining through-pores or through-channels that are open at their two ends, have a diameter smaller than or equal to 100 nm, are oriented in the direction of the thickness of the membrane, and are all substantially parallel over the entire thickness of the membrane, connect the first main surface and the second main surface; the carbon nanotubes are separated by a space, and the space between the carbon nanotubes is completely filled with at least one solid material, and an electrolyte is confined inside the carbon nanotubes. A method for preparing the membrane and an electrochemical device, such as a lithium accumulator or battery, including the electrolyte membrane.

Porous electrolyte membrane, manufacturing process thereof and electrochemical devices comprising same

The invention concerns a substrate that is electrical conductive on at least one of the faces of same, provided with a stack of thin layers comprising at least one layer of catalyst material suitable for accelerating the growth of carbon nanotubes, characterized in that the stack comprises the sequence of thin layers deposited in the following order on top of said at least one electrically conductive face of the substrate: a) optionally, a metal made from metal M or a layer of a metal alloy made from metal M or a graphene layer; b) a titanium layer (Ti); c) an aluminum layer (Al); d) a layer of catalyst material(s) for the growth of carbon nanotubes. The invention also concerns a functional substrate (6) comprising a substrate coated with a carbon nanotube (NTC) mat, a production method and the uses of such a functional substrate.

Substrate that is electrically conductive on at least one of the faces of same provided with a stack of thin layers for growing carbon nanotubes (CNTs)

Fabrication method of a graphene film including the following successive steps: placing the substrate and a solid carbon source in a reaction chamber, provided with a gas inlet; and heating the solid carbon source, by flow of a current in said source, under a gas flow, the gas being devoid of hydrocarbon, so as to convert at least a part of the solid carbon source into a graphene film on the substrate.

Process for producing a graphene film

The invention relates to a method for manufacture of an electrical contact on a structure () made of an anisotropic material NA which exhibits an anisotropic electrical conductivity, where the structure () exhibits an axial electrical conductivity along a first axis XX' of the structure () and an orthogonal conductivity along a direction YY&#x2032; orthogonal to the first axis XX&#x2032; of the structure (), where the orthogonal conductivity is less than the axial conductivity, where the method comprises:

Method for manufacturing an electrical contact on a structure

The invention relates to a positive electrode for a lithium-sulfur electrochemical accumulator comprising an electrically conductive substrate selectively coated, over at least one of its faces, with carbon nanotubes so as to create a zone coated with carbon nanotubes within which a plurality of separate zones without carbon nanotubes are arranged, these separate zones being qualified as empty.

Positive electrode for lithium-sulfur electrochemical accumulator having a specific structure

The invention relates to a method for deposition of nanoparticles made of an insulating, semi-conductive, or conductive material onto predetermined areas, made of a conductive or semi-conductive material, located on a substrate. The invention also relates to a method for manufacturing electrodes. The method of the invention includes the steps of a) creating insulating material areas I around areas Z when said areas I are not already present; b) deposition, by means of electrografting, of a polymer P prepared from a diazonium salt or vinyl monomer salt, or a mixture of the above, onto the conductive or semi-conductive material that forms the areas Z; c) coating the nanoparticles with a coating material that includes a bifunctional molecule capable of creating a bond with the nanoparticles and a bond with the polymer P; d) suspending the coated nanoparticles obtained in Step c) in a solvent, preferably a coating material solution used in Step c); e) immersing the substrate S obtained in Step b) into the suspension obtained in Step d); and f) removing the polymer P. The invention is in particular useful for manufacturing electrodes.

Selective nanoparticle deposition

The invention relates to a nanofiber fabrication method comprising nanofiber growth from a catalyst zone, furthermore comprising the following steps:

Method for the collective fabrication of carbon nanofibers on the surface of micropatterns constructed on the surface of a substrate

The invention relates to an electronic device including electric connections extending along at least two different directions, said connections being essentially formed by means of bundles of carbon nanotubes (CNT) (), Where at least two CNT bundles comprise a portion () having its axis directed along a first direction and a portion () having its axis redirected along a second direction, the connections between CNT bundles being achieved by overlapping of the portions () of said at least two bundles to form a connection line ().

Interconnection structure made of redirected carbon nanotubes

A lighting device for liquid crystal display provides as output a polarized extended light flux. It comprises a light sourcecomprising a layer with high albedo A on the light emission surface S(A), on which are stacked a quarter-wave plateand a reflecting polarizer. This results in a light transmission gain of the order of 1+A, which makes it possible to produce displays with high luminance and low electrical consumption. Application to flat-screen displays.

Lighting device for liquid crystal screen

An element to interconnect at least two conductors of a microelectronic circuit is disclosed that includes an initial conductor, referred to as lower conductor; a dielectric layer situated on the initial conductor; a second conductor, referred to as upper conductor, on the dielectric layer; a cavity in the dielectric layer emerging, on the one hand, on the lower conductor and, on the other hand, on the upper conductor. The upper conductor forms a bridge above the lower conductor and the cavity forms, at a level where it emerges on the upper conductor, two vents on both sides of the latter.

Carbon nanotube-based interconnection element

A microfluidic component comprises at least one channel () delineated by a top wall () and a bottom wall () and two opposite side walls (). The distance (P) between the top wall () and the bottom wall () of the channel () is greater than or equal to 25 micrometers and first and second sets of nanotubes () are respectively borne by the two opposite side walls () for the component to present a particularly high ratio between the contact surface and the available volume and a limited overall surface size. In addition, the distance between the two opposite side walls () is about a few micrometers and preferably comprised between 3 and 5 micrometers.

Microfluidic component with a channel filled with nanotubes and method for its production

The invention relates to a device which makes it possible to establish a horizontal electrical connection between at least two bonding pads. This device comprises horizontal carbon nanotubes which link the vertical walls of said bonding pads and the bonding pads are made by stacking layers of at least two materials, one of which catalyzes growth of the nanotubes and the other of which acts as a spacer between the layers of material which catalyzes growth of the nanotubes.

Carbon nanotube-based horizontal interconnect architecture

Growing community of inventors

Champagnier, France

Jean Dijon