Abstract: An electrolyte composition for an anode-free metal battery cell, wherein the metal is an alkali metal, an alkaline earth metal, or a metal of Group IIIa of the periodic table, including a first solvent, a salt of the alkali metal, the alkaline earth metal or the metal of Group IIIa of the periodic table, the salt being soluble in the first solvent, and an additive. The concentration of the salt in the electrolyte is between 2 M and 3 M, and the additive is a perfluorinated organic compound including at least one halogen atom. The halogen is chlorine, bromine or iodine. An anode-free metal battery cell can include the electrolyte composition.

Abstract: An active material for an electrode for a battery cell, wherein the active material comprises H2-xV3O8, wherein x is between 0.01 and 0.99. Also, a method for producing an active material for an electrode comprising a step of oxidation of H2V3O8, thereby obtaining H2-xV3O8, wherein x is between 0.01 and 0.99, as the active material, wherein the oxidation is performed at a temperature between 80° C. and 150° C., preferably between 100° C. and 130° C.

Abstract: The present invention relates to a liquid electrolyte formulation for a lithium metal secondary battery comprising: a conductive lithium salt which is selected from the group consisting of LiTFSI, LiFSI, LiCl, LiF, LiCN, LiC2N3, LiN3, LiNO2, LiNO3, LiBF4, LiPF6, LiAsF6, LiSbF6, and LiAlCl4 a first ionic liquid having the formula (CATION)FSI, wherein CATION is selected from the group consisting of alkyl pyrollidinium and alkyl piperidinium, a second ionic liquid as anti-corrosion agent, said second ionic liquid having the formula (CATION)(ANION) where (CATION) is defined as above and (ANION) is an anion comprising at least one nitrile functionality. The present invention relates also to a process for preparing such liquid electrolyte formulation and a lithium metal secondary battery comprising said liquid electrolyte formulation.

Abstract: The present invention relates to a liquid electrolyte formulation for a lithium metal secondary battery comprising: a conductive lithium salt which is selected from the group consisting of LiTFSI, LiFSI, LiCl, LiF, LiCN, LiC2N3, LiN3, LiNO2, LiNO3, LiBF4, LiPF6, LiAsF6, LiSbF6, and LiAlCl4 a first ionic liquid having the formula (CATION)FSI, wherein CATION is selected from the group consisting of alkyl pyrollidinium and alkyl piperidinium, a second ionic liquid as anti-corrosion agent, said second ionic liquid having the formula (CATION)(ANION) where (CATION) is defined as above and (ANION) is an anion comprising at least one nitrile functionality. The present invention relates also to a process for preparing such liquid electrolyte formulation and a lithium metal secondary battery comprising said liquid electrolyte formulation.

Abstract: Nanocomposits of conductive, nanoparticulate polymer and electronically active material, in particular PEDOT and LiFePO4, were found to be significantly better compared to bare and carbon coated LiFePO4 in carbon black and graphite filled non conducting binder. The conductive polymer containing composite outperformed the other two samples. The performance of PEDOT composite was especially better in the high current regime with capacity retention of 82% after 200 cycles. Hence an electrode based on composite made of conductive, nanoparticulate polymer and electronically active material, in particular LiFePO4 and PEDOT nanostubs, with its higher energy density and increased resistance to harsh charging regimes proved to dramatically extend the high power applicability of materials such as LiFePO4.

Abstract: A method is described to prepare a cathode material for high energy density rechargeable lithium ion batteries based on H2V3O8 with improved cycling stability by means of a surface modification produced at low temperature in aqueous media. The battery comprises a stack composed by an anode, an electrolytic layer, a separator and a cathode, whose material is based on a mixture of carbon black LixH2-xV3O8 modified by an aluminum hydroxide coating achieved in a one pot multistep reaction using aluminum in an amount comprised between 0.5 wt % and 10 wt %.

Abstract: Described is an electrode comprising and preferably consisting of electronically active material (EAM) in nanoparticulate form and a matrix, said matrix consisting of a pyrolization product with therein incorporated graphene flakes and optionally an ionic lithium source. Also described are methods for producing a particle based, especially a fiber based, electrode material comprising a matrix formed from pyrolized material incorporating graphene flakes and rechargeable batteries comprising such electrodes.

Abstract: A composite material comprising graphene oxide and an electrochemically active ingredient, in particular H4-xV3O8 with x ranging from 0.1 to 2.2, as well as a method for its manufacture were developed. The composite material is suitable for being used as electrode in an electrochemical cell.

Abstract: A method is described to prepare a cathode material for high energy density rechargeable lithium ion batteries based on H2V3O8 with improved cycling stability by means of a surface modification produced at low temperature in aqueous media. The battery comprises a stack composed by an anode, an electrolytic layer, a separator and a cathode, whose material is based on a mixture of carbon black LixH2-xV3O8 modified by an aluminum hydroxide coating achieved in a one pot multistep reaction using aluminum in an amount comprised between 0.5 wt % and 10 wt %.

Abstract: Described is an electrode comprising and preferably consisting of electronically active material (EAM) in nanoparticulate form and a matrix, said matrix consisting of a pyrolization product with therein incorporated graphene flakes and optionally an ionic lithium source. Also described are methods for producing a particle based, especially a fiber based, electrode material comprising a matrix formed from pyrolized material incorporating graphene flakes and rechargeable batteries comprising such electrodes.

Abstract: A composite material comprising graphene oxide and an electrochemically active ingredient, in particular H4?xV3O8 with x ranging from 0.1 to 2.2, as well as a method for its manufacture were developed. The composite material is suitable for being used as electrode in an electrochemical cell.

Abstract: The present invention relates to an electrode of an electrochemical cell, comprising at least a fibrous active electrode material, wherein the fibers of the active material are arranged to form a nonwoven or felt-like self-supporting structure. Moreover the invention relates to a respective electrochemical cell and to a method of making such an electrode.

Abstract: Described is an electrode comprising and preferably consisting of electronically active material (EAM) in nanoparticulate form and a matrix, said matrix consisting of a pyrolization product with therein incorporated graphene flakes and optionally an ionic lithium source. Also described are methods for producing a particle based, especially a fiber based, electrode material comprising a matrix formed from pyrolized material incorporating graphene flakes and rechargeable batteries comprising such electrodes.

Abstract: Described is an electrode comprising and preferably consisting of electronically active material (EAM) in nanoparticulate form and a matrix, said matrix consisting of a pyrolization product with therein incorporated graphene flakes and optionally an ionic lithium source. Also described are methods for producing a particle based, especially a fiber based, electrode material comprising a matrix formed from pyrolized material incorporating graphene flakes and rechargeable batteries comprising such electrodes.

Abstract: Nanocomposits of conductive, nanoparticulate polymer and electronically active material, in particular PEDOT and LiFePO4, were found to be significantly better compared to bare and carbon coated LiFePO4 in carbon black and graphite filled non conducting binder. The conductive polymer containing composite outperformed the other two samples. The performance of PEDOT composite was especially better in the high current regime with capacity retention of 82% after 200 cycles. Hence an electrode based on composite made of conductive, nanoparticulate polymer and electronically active material, in particular LiFePO4 and PEDOT nanostubs, with its higher energy density and increased resistance to harsh charging regimes proved to dramatically extend the high power applicability of materials such as LiFePO4.