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

Commissariat a L'energie Atomique

Stmicroelectronics S.a.

Università Degli Studi Di Bari

Steve Martin

Sami Oukassi

Raphael Salot

Raphaël Salot

Sylvain Poulet

Frederic Gaillard

Jean-Yves Laurent

Marc Plissonnier

Messaoud Bedjaoui

Nicolas Dunoyer

Lucie Le Van-Jodin

Vincent Faucheux

Frédéric Le Cras

Jessica Thery

Riccardo D'agostino

Christophe Secouard

Antoine Latour

Hélène Porthault

Johnny Amiran

Emmanuelle Rouviere

Jouhaiz Rouchou

Christelle Laugier

Philipp Achatz

Antonella Milella

Fabio Palumbo

Pascal Faucherand

Lucie Jodin

Arnaud Claudel

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

An electrochemical device including a stack of solid thin layers formed on a substrate, the stack successively including, a first current collector covering a part of the substrate, first electrode defining a pattern having bottom surface, top surface and side walls, the bottom surface of the pattern covering at least part of the first current collector, electrolyte layer configured to cover at least the top surface and at least part of the side walls of the pattern of the first electrode, a second electrode totally covering the electrolyte layer, the thickness of the electrolyte layer arranged between the walls of the pattern of first electrode and the second electrode being substantially equal around the pattern to within 20%, a second current collector totally covering the second electrode, the second current collector and the second electrode being electrically insulated from the first current collector and from the first electrode.

Electrochemical device, such as a microbattery or an electrochromic system, and fabrication method thereof

The fabrication method of a lithium microbattery provides for use of a substrate successively covered by: a cathode, a solid electrolyte, and a first electrically conducting layer made from a material configured to combine with the lithium atoms. The first layer is devoid of contact with the cathode. The method further includes formation of a second electrically conducting layer configured to form a diffusion barrier for the lithium atoms. The second layer is electrically connected to the first layer and leaves at least a part of the first layer uncovered, the part being facing the electrolyte. Electrochemical deposition of a lithium anode is then performed from germination from the first and second electrically conducting layers.

Method for producing a lithium microbattery

Method for an electrochemical device electrode enrichment, with ionic-species, including steps of: providing a substrate with at least one stack including: a first current-collector covering at least part of the substrate, first electrode covering at least part of the first current-collector, the first electrode being in electric contact with the first current-collector, protective layer totally covering the first electrode and at least part of the first current-collector, the protective layer being electrically insulating and ionically conducting; immersing in an electrolytic solution: the substrate provided with stack, counter-electrode made from conducting material, the electrolytic solution including at least one ionic-species salt and/or counter-electrode including ionic-species, applying electric voltage or current, with voltage or current generator, between first current-collector and counter-electrode making the ionic-species migrate to the first electrode and enrich the first electrode with ionic-species, depositing a second electrode on the protective layer after enrichment of the first electrode with ionic-species.

Method for performing enrichment of an electrode of an electrochemical device with ionic species

A method for the production of a battery includes at least production, against a substrate made of a material able to form an electrode, of at least one solid electrolyte layer, production of a first electrode in contact with the electrolyte, and thinning the substrate such that at least a remaining proportion of the substrate, in contact with the solid electrolyte layer, forms a second electrode.

Method for the production of an all-solid battery

A method for producing a solid lithium-based electrolyte for a solid microbattery implements the cathode sputtering of a lithium-based target material on an object supported by a substrate holder. A grid made of lithium-free electrically conductive material is interposed between the object and the lithium-based target material, the grid being electrically connected to the substrate holder.

Method for producing a lithium-based electrolyte for a solid microbattery

An electrochemical and photovoltaic secondary cell formed by an electrolyte provided between a first electrode and a second electrode, the second electrode including a layer based on a semi-conductor material configured to convert photons into electrons.

Device for converting luminous energy into electrical energy and storing electrical energy, and a method of making an electrochemical cell

The method of producing a device having batteries includes the following successive steps performed on a support substrate:

Method of producing a device having batteries with testing of the operation of the batteries before connecting them electrically

A lithium microbattery comprises a packaging thin layer formed by a matrix of polymer material in which metallic particles are dispersed. The packaging thin layer constitutes at least a part of the anodic current collector of the lithium microbattery. The polymer material is advantageously obtained from at least a photopolymerizable precursor material chosen from bisphenol A diglycidylether, bisphenol F butanediol diglycidil ether, 7-oxabicylco[4.1.0]heptane-3-carboxylate of 7-oxabicylco[4.1.0]hept-3-ylmethyl and a mixture of bisphenol A and epichloridine. It can also be a copolymer obtained from a homogenous mixture of at least two photopolymerizable precursor materials, respectively acrylate-base, such as diacrylate 1,6-hexanediol and methacrylate, and epoxide-base, for example chosen from bisphenol A diglycidylether, 7-oxabicylco[4.1.0]heptane-3-carboxylate of 7-oxabicylco[4.1.0]hept-3-ylmethyl and a mixture of bisphenol A and epichloridine.

Lithium microbattery provided with an electronically conductive packaging layer

This lithium electrochemical device includes a stack of layers suitable for constituting a micro-battery deposited on a substrate and encapsulated using a protective cap sealed onto the substrate. It includes two collectors of the current generated by the micro-battery and at least one insulating layer inert as regards lithium. The collectors and the insulating layer or layers are deposited on the substrate. The protective cap is sealed onto the substrate using the layers constituting the current collectors and the insulating layer or layers. The cap has layers of the same nature, positioned in the same order in line with their respective layers deposited on the substrate, so that when the cap is sealed onto the substrate, the respective layers deposited on the cap and on the substrate come into contact with each other to provide the actual seal of the cap on the substrate.

Encapsulated lithium electrochemical device

A lithium microbattery formed by a stack of thin layers on a substrate which comprises two current collectors, a positive electrode, a solid electrolyte layer, a negative electrode and an encapsulating layer. The encapsulating layer is formed by a protective layer made from polymer material on which a barrier layer is arranged. The protective layer comprises a copolymer formed from a homogeneous mixture of at least two photopolymerizable precursor materials, respectively acrylate-based and epoxide-based.

Lithium microbattery comprising an encapsulating layer and fabrication method

The catalyst thin layer consists of electronically conductive catalyst nano-particles embedded in a polymeric matrix. The ratio number of catalyst atoms/total number of atoms in the catalyst layer is comprised between 40% and 90%, more preferably between 50% and 60%.

Catalyst thin layer and method for fabricating the same

The microcomponent, for example a microbattery, comprising a stack with at least two superposed layers on a substrate, is made using a single steel mask able to expand under the effect of temperature. The mask comprises at least one off-centered opening. The mask being at a first temperature, a first layer is deposited through the opening of the mask. The mask being at a second temperature, higher than the first temperature, a second layer is deposited through the opening of the mask. Finally, the mask being at a third temperature, higher than the second temperature, a third layer is deposited through the opening of the mask.

Method for producing at least one microcomponent with a single mask

The microbattery is formed by a stack of solid thin layers on a substrate which, starting from the substrate, successively comprises a first electrode, a solid electrolyte and a second electrode/current collector assembly. A first surface and a second surface of the electrolyte are respectively in contact with a main surface of the first electrode and a main surface of the second electrode/current collector assembly. The dimensions of the main surface of the first electrode are smaller than the dimensions of the main surface of said assembly, and the dimensions of the first surface of the solid electrolyte are smaller than the dimensions of the second surface of the solid electrolyte. The solid electrolyte is furthermore not in contact with the substrate.

Lithium microbattery and fabrication method thereof

The lithium-ion microbattery comprises a positive electrode having a first Liion storage capacity and a first thickness made from a first lithium insertion material, an electrolyte and a negative electrode having a second storage capacity and a second thickness made from a second insertion material. The thicknesses are such that the ratio of the first storage capacity over the second storage capacity is greater than or equal to 10 and lower than or equal to 1000. During the first charging of the micro-battery, the Liions are inserted in the negative electrode and completely saturate the second insertion material. When initial charging is continued, they form a metallic lithium layer between the electrolyte and the lithium-saturated negative electrode by electroplating. During the subsequent charging and discharging cycles, only the metallic lithium layer participates in transfer of lithium ions.

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Saint-Sauveur, France

Steve Martin