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

Christophe Secouard

Sami Oukassi

Ghislain Despesse

Steve Martin

Sylvain Nizou

Lucie Le Van-Jodin

Arnaud Bazin

Severine Poncet

Nicolas Lopez

Jouhaiz Rouchou

Arnaud Claudel

Séverine Poncet

An assembly able to deliver an output current, includes N electrical energy storage or production cells of rank i, where N≥2, being able to supply a maximum current Iat all times t; a management circuit for managing the electrical energy storage or production cells, wherein, with the cells being classed according to their rank i in decreasing priority of use, the management circuit comprises means for addressing at least the cell of rank 1 or the cells according to their rank i and according to the following criteria: the cell of rank 1 is addressed on its own as long as it is able to supply the output current I<I; the cell of rank 1 is addressed with additionally a number k of cells that are addressed successively according to their rank i, so as to supply the current Is at all times in discharge mode, the number k being such that 2<k≤N and meeting the following conditions:Σand Σ

Assembly of electrical energy storage or production cells comprising a management circuit for managing the cells

An electrode, in particular for micro-batteries, produced in a plurality of layers with intermediate steps of masking a first layer leaving some parts of the latter exposed in order next to produce a removal of material eliminating defects. After removal of the masking layer, the second layer can be formed. Other layers can then follow in the same way.

Storage device and manufacturing method

A solid electrolyte including a layer of LiPO, free from nitrogen, with 3.6&#x2264;x&#x2264;6.3 and 1.5&#x2264;y&#x2264;4, and the ionic conductivity of which is greater than or equal to 10S/cm. A microbattery including a layer of solid electrolyte.

Solid electrolyte for a microbattery

A thin layer lithium-ion type battery comprising, on a substrate (), a cathode current collector layer () and an active portion constituted by a stack of a cathode layer () made of material suitable for inserting lithium ions, an electrolyte layer (), and an anode layer (), wherein the cathode layer presents, across its thickness, porosity that varies between its interface with the cathode current collector layer and its interface with the electrolyte layer, the variation in the porosity being non-zero so as to improve cohesion at both interfaces.

Battery of lithium-ion type with a cathode of varying porosity, and a corresponding method

A process for fabricating a silicon-based thin-film photovoltaic cell, applicable for example in the energy generation field. The fabrication process includes a) depositing a p-doped or n-doped amorphous silicon film, the X-ray diffraction spectrum of which has a line centered at 28&#xb0; that has a mid-height width, denoted by a, such that 4.7&#xb0;&#x2266;a&#x3c;6.0&#xb0;, on a substrate.

Growing community of inventors

Grenoble, France

Christophe Secouard