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

Umicore

Frédéric Barbier

Armand Bettinelli

Willy Porcher

Léo Merchat

Sophie Chazelle

Nicolas Mariage

Electrode for a lithium storage battery, or a lithium battery, including: an active electrode material, made from silicon, a conductive agent, a binder comprising a mixture of two polymers: the first polymer having a first molecular weight, the first polymer being a first polyacrylate or one of its derivatives, the second polymer having a second molecular weight, the second polymer being a second polyacrylate or a carboxymethyl cellulose, or one of their respective derivatives. The first molecular weight is less than or equal to 400,000 g/mol and greater than or equal to 150,000 g/mol. The second molecular weight is greater than or equal to 650,000 g/mol and less than or equal to 4,000,000 g/mol.

Electrode for lithium-ion battery comprising a binder formed from a blend of two polymers, the first polymer being a first polyacrylate or one of its derivatives, the second polymer being a second polyacrylate or a carboxymethyl cellulose or one of their derivatives, ink for producing such an electrode

Stencil for a screen-printing system, comprising slits () in a central printing zone (), forming a pattern to be printed, characterized in that it comprises one or more apertures () in a peripheral deforming zone (), which apertures are intended to cause this peripheral deforming zone () to deform under the effect of a stress applied to the stencil while reducing deformation of the central printing one ().

Silk-screen stencil for printing onto a photovoltaic cell

Growing community of inventors

Saint Martin d'Heres, France

Frédéric Barbier