Abstract: An electrode for a battery cell, including an active material which contains silicon and which contains a first polymer which is ionically conductive. The active material contains in this case a copolymer, which includes the first polymer and a second polymer, the second polymer being electrically conductive. A battery cell which includes at least one electrode is also described.

Abstract: A hybrid supercapacitor includes positive and negative electrodes each having the following composition: 1-5% by mass of a binder; 2.5-7.5% by mass of a conductive additive; and 87.5-96.5% by mass of an active material, where the active material of the positive electrode is a mixture of (a) 30-40% by mass LiMn2O4 (LMO) and (b) 60-70% by mass activated carbon, and the active material of the negative electrode is a mixture of (a) 20-30% by mass Li4Ti5O12 (LTO) and (b) 70-80% by mass activated carbon, and where the ratio of the active mass of the negative electrode to that of the positive electrode is in a range of 0.4-1.2.

Abstract: An aqueous electrolyte for a capacitor contains at least one transition metal complex. An aqueous electrolyte containing at least one transition metal complex can be used in a supercapacitor, in a pseudocapacitor, or in a hybrid supercapacitor. A hybrid supercapacitor contains an aqueous electrolyte, which contains at least one transition metal complex.

Abstract: A hybrid supercapacitor has two electrodes, one of which functions as a cathode, and the other as an anode. The hybrid supercapacitor further includes an electrolyte arranged between the cathode and the anode. The electrolyte contains a solvent selected from the group consisting of methanol, 1-propanol, 1-heptanol, ethyl acetoacetate, ethylene glycol, diethylene glycol, glycerol, benzyl alcohol, di-n-butyl phthalate and mixtures thereof.

Abstract: A method is described for producing silicon particles, in particular for an anode material of a lithium cell. In order to improve the cycle stability of lithium cells and to minimize losses in capacitance, in particular, microorganisms are dispersed in at least one solvent in a method step a), the solvent including at least one silicon compound. In a method step b), the at least one solvent is then removed, and a residue remains. In method step c), the residue is then heated under a reducing atmosphere. In addition, the invention relates to corresponding silicon particles, and to a corresponding anode material including silicon particles, and to a lithium cell provided with such.

Abstract: A symmetric hybrid supercapacitor has two internally hybridized electrodes having both faradic and capacitatively active materials. More specifically, the symmetric hybrid supercapacitor has a cathode and an anode. The cathode contains LiMnxFe1-xPO4. The LiMnxFe1-xPO4 is used as electrode material for the hybrid supercapacitor. The condition applies that 0.1<x<0.9.

Abstract: A silicon-carbon composite. In order to improve the cycle stability of a lithium cell equipped therewith, the silicon-carbon composite is produced by a condensation reaction of silicon particles surface-modified with a first condensation-capable group and carbon particles surface-modified with a second condensation-capable group, the silicon particles being covalently bonded to the carbon particles via the condensation reaction product of the first condensation-capable group and the second condensation-capable group. In addition, a method for the production thereof and to an electrode, an electrode material, and a lithium cell is described.

Abstract: An electrode for a battery cell, including an active material which contains silicon and which contains a first polymer which is ionically conductive. The active material contains in this case a copolymer, which includes the first polymer and a second polymer, the second polymer being electrically conductive. The A battery cell which includes at least one electrode is also described.

Abstract: A supercapacitor has a cathode and an anode. At least one of the cathode and the anode of the supercapacitor contains at least one material which stores polyvalent cations. Additionally, the supercapacitor also has an electrolyte. The electrolyte contains an electrolyte salt, and the electrolyte salt has at least one polyvalent cation.

Abstract: An aqueous electrolyte for a capacitor contains at least one transition metal complex. An aqueous electrolyte containing at least one transition metal complex can be used in a supercapacitor, in a pseudocapacitor, or in a hybrid supercapacitor. A hybrid supercapacitor contains an aqueous electrolyte, which contains at least one transition metal complex.

Abstract: A hybrid supercapacitor has two electrodes, one of which functions as a cathode, and the other as an anode. The hybrid supercapacitor further includes an electrolyte arranged between the cathode and the anode. The electrolyte contains a solvent selected from the group consisting of methanol, 1-propanol, 1-heptanol, ethyl acetoacetate, ethylene glycol, diethylene glycol, glycerol, benzyl alcohol, di-n-butyl phthalate and mixtures thereof.

Abstract: An electrode for a battery cell, including an active material that contains silicon, the active material having a coating that contains a polymer that is dendritic. A battery cell that includes at least one electrode is also provided.

Abstract: A method is described for producing silicon particles, in particular for an anode material of a lithium cell. In order to improve the cycle stability of lithium cells and to minimize losses in capacitance, in particular, microorganisms are dispersed in at least one solvent in a method step a), the solvent including at least one silicon compound. In a method step b), the at least one solvent is then removed, and a residue remains. In method step c), the residue is then heated under a reducing atmosphere. In addition, the invention relates to corresponding silicon particles, and to a corresponding anode material including silicon particles, and to a lithium cell provided with such.

Abstract: A hybridized electrode includes from 5% by weight to 10% by weight of a binder which has a capacitance of at least 100 F/g. A hybrid supercapacitor includes at least one hybridized electrode of this type.

Abstract: A symmetric hybrid supercapacitor has two internally hybridized electrodes having both faradic and capacitatively active materials. More specifically, the symmetric hybrid supercapacitor has a cathode and an anode. The cathode contains LiMnxFe1-xPO4. The LiMnxFe1-xPO4 is used as electrode material for the hybrid supercapacitor. The condition applies that 0.1<x<0.9.

Abstract: A direct current energy source includes a hybrid supercapacitor, a positive electrical contact element, and a negative electrical contact element. The positive electrical contact element and the negative electrical contact element are configured to electrically connect the direct current energy source simultaneously to an electrical consumer and to another similar direct current energy source.

Abstract: A hybrid supercapacitor includes an anode and a cathode. The cathode is applied to a first collector, and the anode is applied to a second collector. The hybrid supercapacitor also includes an electrolyte that is inserted between the anode and the cathode. The electrolyte contains an ionic liquid as a solvent.

Abstract: An asymmetric hybrid supercapacitor includes a cathode and an anode. The cathode is applied to a first connector, and the anode is applied to a second connector. An electrolyte is present between the cathode and the anode. The anode contains a metal or semimetal. The metal or semimetal has a porosity of at least 20% by volume.

Abstract: A method for producing an electrode of a lithium-ion battery having the steps of providing a precursor including an electrode active material and LiF, of providing a metal foil and of joining the precursor and the metal foil. Furthermore, a method for producing a lithium-ion battery is provided as well as electrodes and lithium-ion batteries that are producible according to the method.

Abstract: A silicon-carbon composite. In order to improve the cycle stability of a lithium cell equipped therewith, the silicon-carbon composite is produced by a condensation reaction of silicon particles surface-modified with a first condensation-capable group and carbon particles surface-modified with a second condensation-capable group, the silicon particles being covalently bonded to the carbon particles via the condensation reaction product of the first condensation-capable group and the second condensation-capable group. In addition, a method for the production thereof and to an electrode, an electrode material, and a lithium cell is described.