Abstract: A lithium-air battery is provided, which includes a cathode having a gas diffusion layer containing a solid electronically conductive material coated with carbon black, the gas diffusion layer being at least partially filled with gaseous air, a separator having an electronically nonconducting filter material arranged between the anode and the cathode, the filter material being at least partially impregnated with a liquid electrolyte, and an anode containing a material selected from lithium metal, material alloyable with lithium, metal oxide, and mixtures thereof. Methods for making such battery and the use of such battery in a motor vehicle are also provided.

Abstract: A lithium-air battery is provided which includes a gas diffusion layer that is at least partially filled with air, having an electrically conducting material as a cathode, an at least partially electrolyte-impregnated filter having an electronically non-conducting material as a separator, and an anode having a lithium metal, a lithium-metal alloy or lithium-oxide-metal mixture. The separator is between the anode and the cathode and the electrolyte includes a hydrophobic, ionic liquid and a lithium salt. The three phases, gaseous air, liquid electrolyte and solid conducting material, are in contact on at least one point of the gas diffusion layer. A method for producing such battery and the use of such battery in a motor vehicle are also provided.

Abstract: A lithium-air battery is provided, which includes a cathode having a gas diffusion layer containing a solid electronically conductive material coated with carbon black, the gas diffusion layer being at least partially filled with gaseous air, a separator having an electronically nonconducting filter material arranged between the anode and the cathode, the filter material being at least partially impregnated with a liquid electrolyte, and an anode containing a material selected from lithium metal, material alloyable with lithium, metal oxide, and mixtures thereof. The liquid electrolyte contains a hydrophobic, ionic liquid, such as DEME-TFSI and a lithium salt, such as LiTFSI. The three phases of gaseous air, liquid electrolyte and solid, electronically conductive material are in contact on at least one point of the gas diffusion layer. Methods for making such battery and the use of such battery in a motor vehicle are also provided.

Abstract: A rechargeable electrochemical metal ion cell includes negative and positive electrodes, and an electrolyte system between them. The negative electrode includes a metal capable of releasing and accepting metal ions. The positive electrode includes at least one compound capable of releasing and accepting metal ions different from those of the negative electrode. The electrolyte system includes: a glycol-based electrolyte solution containing a salt of a metal included in the negative electrode and a salt of a metal included in the positive electrode; a matrix adapted to retain the electrolyte solution, where two reversible reactions take place simultaneously in the cell: a reversible deposition and dissolution process of ions of a metal included in the negative electrode takes place in the negative electrode and a reversible ion exchange process of a metal included in the positive electrode takes place in the positive electrode. The metals are different from one another.

Abstract: The present invention relates to a method for manufacturing a lithiated metal-carbon composite electrode, a lithiated metal-carbon composite electrode manufactured thereby, and an electrochemical device including the electrode. More particularly, the present invention relates to a method for manufacturing a lithiated metal-carbon composite electrode with a new structure having excellent charge/discharge and cycle characteristics, a lithiated metal-carbon composite electrode manufactured thereby, and an electrochemical device including the electrode. In the lithiated metal-carbon composite electrode, lithium is alloyed with a metal and is inserted into a crystal structure of carbon to form the composite having a stable structure. Thus, a volume of the metal is slightly varied, so a cycle characteristic may not be deteriorated and charge/discharge capacities may be improved.

Abstract: A rechargeable electrochemical metal ion cell includes negative and positive electrodes, and an electrolyte system between them. The negative electrode includes a metal capable of releasing and accepting metal ions. The positive electrode includes at least one compound capable of releasing and accepting metal ions different from those of the negative electrode. The electrolyte system includes: a glycol-based electrolyte solution containing a salt of a metal included in the negative electrode and a salt of a metal included in the positive electrode; a matrix adapted to retain the electrolyte solution, where two reversible reactions take place simultaneously in the cell: a reversible deposition and dissolution process of ions of a metal included in the negative electrode takes place in the negative electrode and a reversible ion exchange process of a metal included in the positive electrode takes place in the positive electrode. The metals are different from one another.

Abstract: A lithium-air battery is provided which includes a gas diffusion layer that is at least partially filled with air, having an electrically conducting material as a cathode, an at least partially electrolyte-impregnated filter having an electronically non-conducting material as a separator, and an anode having a lithium metal, a lithium-metal alloy or lithium-oxide-metal mixture. The separator is between the anode and the cathode and the electrolyte includes a hydrophobic, ionic liquid and a lithium salt. The three phases, gaseous air, liquid electrolyte and solid conducting material, are in contact on at least one point of the gas diffusion layer. A method for producing such battery and the use of such battery in a motor vehicle are also provided.

Abstract: A pentacyclic anion salt is provided for use thereof in electrolyte compositions. The compound has an inorganic, organic or organometallic cation M of valency m (1?m?3) and m anions corresponding to the formula (I) in which Rf is a —CFZ?Z? group in which Z? is F or a perflouroalkyl group having from 1 to 3 carbon atoms, and Z? is an H, F or Cl group, an optionally fluorinated or perfluorinated alkoxy group having from 1 to 5 carbon atoms, an optionally fluorinated or perfluorinated oxaalkoxy group having 1 to 5 carbon atoms or an optionally fluorinated or perfluorinated alkyl group having from 1 to 5 carbon atoms; Z? being other than F when Z? is F. An electrolyte composition comprises said salt in solution in a liquid solvent or a polymer solvent.

Abstract: The present invention relates to a method for manufacturing a lithiated metal-carbon composite electrode, a lithiated metal-carbon composite electrode manufactured thereby, and an electrochemical device including the electrode. More particularly, the present invention relates to a method for manufacturing a lithiated metal-carbon composite electrode with a new structure having excellent charge/discharge and cycle characteristics, a lithiated metal-carbon composite electrode manufactured thereby, and an electrochemical device including the electrode. In the lithiated metal-carbon composite electrode, lithium is alloyed with a metal and is inserted into a crystal structure of carbon to form the composite having a stable structure. Thus, a volume of the metal is slightly varied, so a cycle characteristic may not be deteriorated and charge/discharge capacities may be improved.

Abstract: A pentacyclic anion salt is provided for use thereof in electrolyte compositions. The compound has an inorganic, organic or organometallic cation M of valency m (1?m?3) and m anions corresponding to the formula (I) in which Rf is a —CFZ?Z? group in which Z? is F or a perflouroalkyl group having from 1 to 3 carbon atoms, and Z? is an H, F or Cl group, an optionally fluorinated or perfluorinated alkoxy group having from 1 to 5 carbon atoms, an optionally fluorinated or perfluorinated oxaalkoxy group having 1 to 5 carbon atoms or an optionally fluorinated or perfluorinated alkyl group having from 1 to 5 carbon atoms; Z? being other than F when Z? is F. An electrolyte composition comprises said salt in solution in a liquid solvent or a polymer solvent.

Abstract: The invention relates to a pentacyclic anion salt and to the use thereof in electrolyte compositions. The compound comprises an inorganic, organic or organometallic cation M of valency m (1?m?3) and m anions corresponding to the formula (I) in which Rf is a —CFZ?Z? group in which Z? is F or a perfluoroalkyl group having from 1 to 3 carbon atoms, and Z? is an H, F or Cl group, an optionally fluorinated or perfluorinated alkoxy group having from 1 to 5 carbon atoms, an optionally fluorinated or perfluorinated oxaalkoxy group having from 1 to 5 carbon atoms or an optionally fluorinated or perfluorinated alkyl group having from 1 to 5 carbon atoms; Z? being other than F when Z? is F. An electrolyte composition comprises said salt in solution in a liquid solvent or a polymer solvent.

Abstract: Disclosed is a lithium-sulfur polymer battery having a anode and a cathode separated by an electrolyte formed by a membrane containing a solution of a lithium salt in aprotic organic solvents with the addition of lithium sulfide and/or lithium polysulfides until saturation, this solution being trapped in a polymer matrix.

Abstract: The invention relates to a pentacyclic anion salt and to the use thereof in electrolyte compositions. The compound comprises an inorganic, organic or organometallic cation M of valency m (1?m?3) and m anions corresponding to the formula (I) in which Rf is a —CFZ?Z? group in which Z? is F or a perfluoroalkyl group having from 1 to 3 carbon atoms, and Z? is an H, F or Cl group, an optionally fluorinated or perfluorinated alkoxy group having from 1 to 5 carbon atoms, an optionally fluorinated or perfluorinated oxaalkoxy group having from 1 to 5 carbon atoms or an optionally fluorinated or perfluorinated alkyl group having from 1 to 5 carbon atoms; Z? being other than F when Z? is F. An electrolyte composition comprises said salt in solution in a liquid solvent or a polymer solvent.

Abstract: A process for preparing membranes formed by (per) fluorinated ionomeric electrolytes salified with the lithium ion, comprising the following steps: a) obtaining of (per) fluorinated polymer membranes, containing —SO2F groups; b) partial or complete salification of (per)fluorinated polymer membranes containing —SO2F groups with basic lithium compounds and final washing with water; c) swelling and contemporaneous drying process of membranes by dipping in a heterogeneous biphasic system of a dipolar aprotic solvent wherein insoluble solid drying agents are dispersed.

Abstract: A process for preparing membranes formed by (per) fluorinated ionomeric electrolytes salified with the lithium ion, comprising the following steps:

Abstract: A lithium-ion rechargeable battery with carbon-based anode comprising a cathode based on a lithium intercalating compound, such as a lithium-free or a lithiated compound, a non-aqueous lithium ion-conducting electrolyte and a carbon-based anode, wherein said carbon-based anode comprises, as the starting active material before the first cycle of the battery, the potassium intercalated graphite of the formula KC.sub.8 (first stage potassium graphite intercalation compound), optionally together with a binder. After the first discharge cycle of the battery, most potassium ions are released from the intercalation compound, but the structure of the anode compound maintains an "expanded" interlayer distance, which greatly enhances the kinetics of the electrochemical process, thus resulting in a high-rate carbon anode. The positive counterelectrode material may be chosen both among lithiated and among lithium-free intercalation compounds.

Abstract: A solid state electrochemical cell comprising:(a) an electrolyte comprising a polymeric matrix, an inorganic salt and a solvent;(b) an anode comprising a thin film of lithium metal or an alloy thereof; and(c) a cathode comprising a polymeric matrix, a conductive carbon and a metal salt, M.sub.2 ZO.sub.4, wherein M is Ag or Cu and Z is W, Mo or Cr.

Abstract: Composite, ternary, polymeric system formed by intimately mixing a polymeric compound, a metal salt, and a ceramic additive acting both as agent promoting the transport features (conductivity and ion mobility) and as stabilizer of the chemical characteristics (compatibility with the electrode materials) of the polymeric electrolyte.

Abstract: An electrochromic window comprises a tungsten oxide electrode on a transparent conductive glass sheet and a nickel oxide counterelectrode. The counterelectrode is activated by electrochemical intercalation of lithium on a transparent conductive glass sheet. The window also comprises a solid polymeric electrolyte interposed between the electrode and the counterelectrode. The electrolyte is formed by a solid solution of an ionic lithium compound in a solid crosslinked polyepoxide. The polyepoxide is obtained by copolymerization of a monoepoxide with a diepoxide.

Abstract: A solid, polymeric electrolyte is constituted by a solid solution of an ionic compound in a polyepoxide, wherein said polyepoxide is the product of copolymerization of a monoepoxide of formula: ##STR1## wherein: R stands for methyl or ethyl radical; andn is an integer comprised within the range of from 2 to 10;with a diepoxide of formula: ##STR2## wherein: m is an integer comprised within the range of from 2 to 10;with a molar ratio of monoepoxide to diepoxide comprised within the range of from 99.9/0.1 to 90/10;with said polyepoxide furthermore having a weight average molecular weight equal to, or higher than, 1,000, and a glass transition temperature (Tg) of from -80.degree. to -60.degree. C.The solid, polymeric electrolyte can be converted into an electrochemical membrane useful in the manufacture of high-energy-density electrochemical generators, optical displays, electrochromic systems and sensors.