Abstract: The present technology relates to an ionic polymer comprising at least one repeating unit comprising the reaction product between at least one compound comprising at least two functional groups and a metal bis(halosulfonyl)imide for use in electrochemical applications, particularly in electrochemical accumulators such as batteries, electrochromic devices and supercapacitors. The present technology also relates to a polymer composition, a solid polymer electrolyte composition, a solid polymer electrolyte, an electrode material comprising said ionic polymer. Their uses in electrochemical cells and electrochemical accumulators as well as their manufacturing processes are also described.

Abstract: A method of preparing an electrochemical electrode which is partially or totally covered with a film that is obtained by spreading an aqueous solution comprising a water-soluble binder over the electrode and subsequently drying same. The production cost of the electrodes thus obtained is reduced and the surface porosity thereof is associated with desirable resistance values.

Abstract: Olivine-type compounds, their preparation and use in cathode materials for sodium-ion batteries. The olivine-type compounds may be obtained by a direct synthesis embodying a hydrothermal method. The method may include preparing an aqueous mixture including a M-containing compound, a M?-containing compound and a M?-containing compound to obtain a M-M?-M? mixture; adding a P-containing compound to the mixture M-M?-M? mixture to obtain a M-M?-M?-P mixture; adding a Na-containing compound to the M-M?-M?-P mixture to obtain a Na-M-M?-M?-P mixture; and introducing the Na-M-M?-M?-P mixture into an autoclave to perform crystal growth and obtain the compound of general formula NahMiM?jM?kPO4.

Abstract: The present technology relates to a sulfur-containing polymer or organic compound for use in a positive electrode material, especially in lithium batteries. More specifically, the use of this sulfur-containing polymer or compound as an active electrode material makes it possible to combine sulfur and an active organic cathode material. The present technology also relates to the use of the sulfur-containing polymer or organic compound as defined herein as a solid polymer electrolyte (SPE) or as an additive for electrolyte, especially in lithium batteries.

Abstract: A solid electrolyte includes a polymer and a lithium salt, a sodium salt or mixtures of these salts. The polymer has at least 50 mol % of recurring units of formula (I). A method is for the preparation of the electrolyte. Energy storage devices can include the electrolyte.

Abstract: This disclosure provides for Olivine-type compounds, their preparation and use in cathode materials for sodium-ion batteries. The olivine-type compounds of the invention are obtained by a direct synthesis embodying a hydrothermal method.

Abstract: A metal ion capacitor with outstanding power capabilities having a negative electrode based on hard carbon (HC) and a positive electrode based on a combination of activated carbon (AC) and a sacrificial salt selected from the group consisting of squarate, oxalate, ketomalonate and di-ketosuccinate or a combination thereof. The sacrificial salt is added to AC in the positive electrode as a source of metal ions for pre-doping the HC and to efficiently compensate its high irreversible capacity by providing the metal ions necessary for the formation of solid electrolyte interphase (SEI) on the hard carbon, allowing for a 1:1 and superior mass balances between anode and cathode. Advantageously, the extraordinary performance of this approach has been successfully demonstrated not only in lithium ion capacitors (LICs) but also in other metal ion capacitors such as sodium and potassium ion capacitors.

Abstract: A solid single-ion conductive polymer comprising a repeat unit of formula (Ia): wherein R1 is H, or C1 to C16 linear or branched alkyl, alkenyl, alkinyl; m is 1 to 5; each M+ is independently selected from Li+, Na+ or K+; and X is selected from CF3, CH3, or F; and the polymer has an average molecular weight of 350.000 to 1.200.000 Da.

Abstract: The present technology relates to a sulfur-containing polymer or organic compound for use in a positive electrode material, especially in lithium batteries. More specifically, the use of this sulfur-containing polymer or compound as an active electrode material makes it possible to combine sulfur and an active organic cathode material. The present technology also relates to the use of the sulfur-containing polymer or organic compound as defined herein as a solid polymer electrolyte (SPE) or as an additive for electrolyte, especially in lithium batteries.

Abstract: A copolymer for constituting a polymer electrolyte for a solid-electrolyte lithium or sodium cell. A polymer electrolyte that is usable in combination with high-voltage cathode active materials and makes it possible to provide solid-electrolyte lithium or sodium cells and/or batteries having a high energy density that is sufficient even for use in electricity-based vehicles, the copolymer encompasses at least two ion-conductive polymers, the copolymer encompassing at least one polymer polymerized by ring-opening polymerization of at least one lactone and/or of at least one lactide and/or of at least one cyclic carbonate and/or of at least one cyclic carbamate and/or of at least one lactam and/or of at least one epoxide, and/or at least one polymer polymerized by radical polymerization of acrylonitrile and/or of at least one acrylonitrile derivative; and encompasses at least one polyacrylate having at least one repeating unit.

Abstract: Polymers used as rolling lubricating agents, to compositions including said polymers, and to alkali metal films including the polymers or compositions on the surface(s) thereof. The use of said polymers and compositions is also described for strip-rolling alkali metals or alloys thereof in order to obtain thin films. Methods for producing said thin films, which are suitable for use in electrochemical cells, are also described. An improved lubricant according to formula I, which, for example, achieves enhanced conductivity, and/or enables the production of electrochemical cells having an improved life span in cycles.

Abstract: The present technology described relates to lithium-based alloy electrode materials used for the production of anode in lithium accumulators and processes for obtaining same. The alloy comprises metallic lithium, a metallic component X1 selected from magnesium and aluminum and a metallic component X2 selected from alkali metals, alkaline earth metals, rare earths, zirconium, copper, silver, bismuth, cobalt, zinc, aluminum, silicon, tin, antimony, cadmium, mercury, lead, manganese, boron, indium, thallium, nickel, germanium, molybdenum and iron. Processes for preparing electrode materials thus obtained and their uses are also described.

Abstract: The invention relates to an ionic conductive polymeric composition defined by the following general formula: (PH)x+(SOH)y+z(MCl); in which: —PH represents a polymer containing protic functions; —SOH represents a plasticizing polyol with a molecular mass of not less than 75 g/mol and not greater than 250 g/mol, in the form of discrete molecules; —MCl represents sodium or potassium chloride (M=Na or K); —0.3?x/y?3, x representing the amount by weight of the polymer PH, and y the amount by weight of the polyol SOH; —0.5%?z?15%, z representing the percentage by weight of MCl relative to the polyol SOH. Said polymeric composition may be used particularly as conductive material in electrodes for measuring electrophysiological signals.

Abstract: The present technology relates to a polymer comprising at least one ester repeating unit and one ether repeating unit for use in an electrochemical cell, particularly in electrochemical accumulators such as lithium batteries, sodium batteries, potassium batteries and lithium-ion batteries. More specifically, the use of this polymer as a solid polymer electrolyte (SPE), as a matrix for forming gel electrolytes, or as a binder in an electrode material are also contemplated.

Abstract: Here are described methods for the delithiation of carbon-free olivines, for instance, by the addition of an external carbon source in the presence of an oxidizing agent, e.g. a persulfate.

Abstract: A solid single-ion conductive polymer comprising a repeat unit of formula (Ia): wherein R1 is H, or C1 to C16 linear or branched alkyl, alkenyl, alkinyl; m is 1 to 5; each M+ is independently selected from Li+, Na+ or K+; and X is selected from CF3, CH3, or F; and the polymer has an average molecular weight of 350.000 to 1.200.000 Da.

Abstract: A method of preparing an electrochemical electrode which is partially or totally covered with a film that is obtained by spreading an aqueous solution comprising a water-soluble binder over the electrode and subsequently drying same. The production cost of the electrodes thus obtained is reduced and the surface porosity thereof is associated with desirable resistance values.

Abstract: The present invention relates to a sodium-ion battery comprising a positive electrode compartment comprising a positive electrode, said positive electrode comprising a Na-insertion compound; a negative electrode compartment comprising a negative electrode, said negative electrode comprising metallic sodium; and an electrolyte composition comprising a solid sodium-ion conductive ceramic electrolyte and a catholyte comprising a metallic salt with formula MY, wherein M is a cation selected from an alkali metal and an alkali-earth metal; and Y is an anion selected from [R1SO2NSO2R2], CF3SO3?, C(CN)3?, B(C2O4)2? and BF2(C2O4)?, wherein R1 and R2 are independently selected from fluorine or a fluoroalkyl group. The device is able to operate below the melting point of the anode component.

Abstract: A method of preparing an electrochemical electrode which is partially or totally covered with a film that is obtained by spreading an aqueous solution comprising a water-soluble binder over the electrode and subsequently drying same. The production cost of the electrodes thus obtained is reduced and the surface porosity thereof is associated with desirable resistance values.

Abstract: The present invention refers to a method for preparing a solid polymer electrolyte based on modified cellulose, the method comprising the steps of: a) lithiation or sodiation of at least a hydroxyl group of each repeating unit of a “cellulose” to obtain Li(cellulose) or Na(cellulose); b) functionalization of the Li(cellulose) or Na(cellulose) obtained in step a), in the presence of an aprotic solvent by reacting it with an organic linker, wherein the organic linker serves to covalently attach at least one organic salt to the “cellulose”, and the use of the solid polymer electrolyte in lithium or sodium secondary batteries.