Abstract: The invention relates to methods for producing a porous electrode, said electrode comprising a layer deposited on a substrate, being binder-free and having a porosity of more than 30 and less than 50 volume %, and pores having an average diameter of less than 50 nm, said method comprising: (a) providing a colloidal suspension containing aggregates or agglomerates of nanoparticles of at least one material P having an average primary diameter of 80 nm or less, said aggregates or agglomerates having an average diameter comprised between 80 nm and 300 nm, (b) providing a substrate, (c) depositing a mesoporous, electrode layer on the substrate by electrophoresis, ink-jet, doctor blade, roll coating, curtain coating or dip-coating, from the colloidal suspension provided in step (a); (d) drying said layer, preferably in an air flow, and (e) consolidating the porous, preferably mesoporous electrode layer obtained in step (d) by pressing and/or heating.

Abstract: A method for manufacturing an anode having a porosity of between 25% and 50% by volume, wherein: (a) a substrate and a colloidal suspension or a paste composed of monodispersed primary nanoparticles, in the form of agglomerates or dispersed, is provided of at least one active material of anode A selected from niobium oxides and mixed oxides of niobium with titanium, germanium, cerium, lanthanum, copper or tungsten, with an average primary diameter D50 of between 2 nm and 100 nm; (b) on at least one face of said substrate a layer of the colloidal suspension or paste provided in step (a) is deposited by a method selected from the group including: electrophoresis, a printing process and preferably inkjet printing or flexographic printing, a coating method and preferably doctor blade coating, roll coating, curtain coating, dip coating or through a slot die; (c) the layer obtained in step (b) is dried and consolidated by pressing and/or heating to obtain a porous layer.

Abstract: A method for manufacturing an electrochemical device that may be selected from the group consisting of: lithium ion batteries with a capacity greater than 1 mAh, capacitors, supercapacitors, resistors, inductors, transistors, photovoltaic cells, fuel cells, implementing a method for manufacturing an assembly comprising a porous electrode and a porous separator comprising a porous layer deposited on a substrate having a porosity comprised between 20% and 60% by volume, and pores with an average diameter of less than 50 nm.

Abstract: An anodic member, an electrochemical device having an anodic member, and a method for manufacturing an anodic member for a lithium-ion battery. The method uses nanoparticles of an electrically insulating material that conducts lithium ions, is stable in contact with metallic lithium, does not insert lithium at potentials of between 0 V and 4.3 V with respect to the potential of the lithium, and has a relatively low melting point.

Abstract: An anodic member, an electrochemical device having an anodic member, and a method for manufacturing an anodic member for a lithium-ion battery. The method uses nanoparticles of an electrically insulating material that conducts lithium ions, is stable in contact with metallic lithium, does not insert lithium at potentials of between 0 V and 4.3 V with respect to the potential of the lithium, and has a relatively low melting point.

Abstract: A method for manufacturing an electrode having a porosity of between 20% and 60% by volume and pores with an average diameter of less than 50 nm. In the method, provision is made of a substrate and a colloidal suspension of aggregates or agglomerates of monodisperse primary nanoparticles of an active electrode material, having an average primary diameter D50 of between 2 and 100 nm, the aggregates or agglomerates having an average diameter D50 of between 50 nm and 300 nm. A layer is deposited from said colloidal suspension on the substrate. The deposited layer is then dried and consolidated to obtain a mesoporous layer. A coating of an electronically conductive material is then deposited on and inside the pores of the porous layer. Such a porous electrode can be used in lithium-ion microbatteries.

Abstract: A method for manufacturing a lithium-ion microbattery having a capacity not exceeding 1 mAh, implementing a method for manufacturing an assembly comprising a porous electrode and a porous separator comprising a porous layer deposited on a substrate having a porosity comprised between 20% and 60% by volume, and pores with an average diameter of less than 50 nm. The separator comprises a porous inorganic layer deposited on the electrode, the porous inorganic layer having a porosity comprised between 20% and 60% by volume, and pores with an average diameter of less than 50 nm.

Abstract: A battery, and a method for manufacturing at least one battery. The method includes forming a stack formed by an alternating succession of cathode strata and anode strata, each cathode stratum forming cathode entities and each anode stratum forming anode entities. The method further includes conducting a heat treatment and/or a mechanical compression of the formed stack to form a consolidated stack, and then making a pair of main cuts between two adjacent empty zones, in a top view, so as to expose an anode connection zone and an cathode connection zone, and to separate a given battery, formed from a given row (Rn), from at least one other adjacent battery, formed from at least one adjacent row (Rn+1).

Abstract: Systems, methods, and apparatus for encapsulating objects like that of microelectronic components and batteries. The system includes three successive layers that include a first covering layer composed of an electrically insulating material deposited by atomic layer deposition, which at least partly covers the object, a second covering layer that includes parylene and/or polyimide, and which is disposed on the first covering layer, and a third covering layer deposited on the second covering layer in such a way as to protect the second encapsulation layer, namely, with respect to oxygen, and thereby increase the service life of the object.

Abstract: A method for manufacturing a dense layer that includes: supplying a substrate and a suspension of non-agglomerated nanoparticles of a material P; depositing a layer on the substrate using the suspension; drying the layer thus obtained; and densifying the dried layer by mechanical compression and/or heat treatment. The method is characterised in that the suspension of non-agglomerated nanoparticles of material P includes nanoparticles of material P having a size distribution having a value of D50. The distribution includes nanoparticles of material P of a first size D1 between 20 nm and 50 nm, and nanoparticles of material P of a second size D2 characterised by the value D50 being at least five times less than that of D1, or the distribution has a mean size of nanoparticles of material P less than 50 nm, and a standard deviation to mean size ratio greater than 0.6.

Abstract: A method for manufacturing a lithium ion battery with a capacitance greater than 1 mA h, including the deposition of at least one dense layer, which can be an anode and/or a cathode and/or an electrolyte, by a method of depositing a dense layer. The method includes: supplying a substrate and a suspension of non-agglomerated nanoparticles of a material P; depositing a layer on the substrate using the suspension; drying the layer thus obtained; densifying the dried layer by mechanical compression and/or heat treatment.

Abstract: Battery including at least one unit cell formed by an anode, an electrolyte, and a cathode, defining a stack. The stack of the battery has a plurality of faces that includes two end faces opposite one another, two lateral faces opposite one another, and two longitudinal faces opposite one another. The first longitudinal face includes at least one anode connection zone and a second longitudinal face of the battery includes at least one cathode connection zone that is laterally opposite to the at least one anode connection zone. In a first longitudinal direction of the battery, each anode current-collecting substrate protrudes from each anode layer, from each layer of electrolyte material or layer of a separator impregnated with an electrolyte, from each cathode layer and from each cathode current-collecting substrate layer.

Abstract: A method for manufacturing an electrochemical device, implementing a process for manufacturing a porous electrode having a porous layer deposited on a substrate, the porous layer having a porosity of between 20% and 60% by volume and pores with an average diameter of less than 50 nm. The method includes providing a substrate and a colloidal suspension including aggregates or agglomerates of monodisperse primary nanoparticles of an active electrode material, having an average primary diameter of between 2 and 60 nm, the aggregates or agglomerates having an average diameter of between 50 nm and 300 nm, then depositing a layer from the colloidal suspension on the substrate, then drying and consolidating the layer to obtain a mesoporous layer, and then depositing a coating of an electronically conductive material on and inside the pores of the layer.

Abstract: High-power battery architecture comprising unique anode and cathode conductive means procuring improved battery life.

Abstract: A battery-type of electrochemical device including a unit stack formed by at least one unit cell, an electrical connection support, made at least in part of a conductive material, provided near a first frontal face of the unit stack, electrical insulation means enabling two distant regions of the electrical connection support to be insulated from one another, anode contact means enabling a first lateral face of the unit stack to be electrically connected to the electrical connection support, cathode contact means enabling a second lateral face of the unit stack to be electrically connected to the electrical connection support, an encapsulation system covering the other frontal face of the unit stack, the anode contact means, the cathode contact means, and at least in part the face of the electrical connection support that is facing the unit stack, and a mechanical stiffening system covering the encapsulation system opposite the electrical connection support.

Abstract: A method for producing an all-solid multilayer battery, and an all-solid multilayer battery. The all-solid multilayer battery may be produced by depositing, by electrophoresis without any binder, at least one anode layer, at least one electrolyte layer, and at least one cathode layer. The at least one electrolyte layer, and the at least one cathode layer are obtained from a colloidal suspension containing nanoparticles that are not agglomerated with each other to create clusters and remain isolated from each other. A layer of Ms bonding material is then deposited on a surface of the at least one electrolyte layer. Next, two layers from the at least one dense anode layer, the at least one dense electrolyte layer, and the at least one dense cathode layer, are stacked face-to-face to obtain the all-solid multilayer battery having an assembly of a plurality of elementary cells connected with one another in parallel.

Abstract: Thin-film batteries having a novel encapsulation system.

Abstract: Thin-film batteries that include a novel encapsulation system.

Abstract: A battery including a stack alternating between at least one anode and at least one cathode, a primary encapsulation system covering some of the faces of the stack, at least one anode contact member operable to make electrical contact between the stack and an external conductive element, and at least one cathode contact member operable to make an electrical contact between the stack and an external conductive element. An additional encapsulation system includes two frontal regions respectively covering a respective frontal region of the primary encapsulation system and two lateral regions which cover a respective lateral region devoid of any contact member of the primary encapsulation system. Each of the two frontal regions of the additional encapsulation system further cover the frontal ends respectively of the anode contact members and the cathode contact members.

Abstract: Systems, methods, and apparatus for encapsulating objects like that of microelectronic components and batteries. The system includes three successive layers that include a first covering layer composed of an electrically insulating material deposited by atomic layer deposition, which at least partly covers the object, a second covering layer that includes parylene and/or polyimide, and which is disposed on the first covering layer, and a third covering layer deposited on the second covering layer in such a way as to protect the second encapsulation layer, namely, with respect to oxygen, and thereby increase the service life of the object.