Abstract: In order to provide an electrochemical cell (100) that can be produced as simply as possible and has as long a service life as possible, according to the invention an electrochemical cell (100), in particular a cylindrical cell, is provided, which comprises: an electrochemical element (104), a housing (106), a first cell terminal (118) and a second cell terminal (120); wherein the electrochemical cell (100) also comprises a cast element, in particular a first cast element (128), for connecting the housing (106) and the first cell terminal (118) and/or a cast element, in particular a second cast element (154), for connecting the housing (106) and the second cell terminal (120).

Abstract: The aim of the invention is to provide an electrochemical cell which is as simply constructed as possible and which requires as little production effort as possible. This is achieved by an electrochemical cell, in which a first connection conductor is secured to a cover element in a first connection region by means of a first potting element, said first potting element being surrounded and/or accommodated by a first compensation element of the electrochemical cell in the first connection region, and/or in which a second connection conductor is secured to the cover element in a second connection region by means of a second potting element, said second potting element being surrounded and/or accommodated by a second compensation element of the electrochemical cell in the second connection region.

Abstract: In order to provide a feedthrough system which can be produced as easily as possible and has an optimized service life, it is proposed that the feedthrough system comprises a wall component which has one or more feedthrough openings, one or more lines which are guided through the one or more feedthrough openings, and a fastening device, the fastening device connecting the one or more lines to the wall component in one or more connection regions of the feedthrough system.

Abstract: In order to create an electrochemical cell, comprising a housing, an electrochemical element arranged in an interior of the housing, and at least one cell terminal that comprises a terminal feed-through, which extends through a through-opening of the housing, which electrochemical cell is of simple construction and requires a low production expenditure but still reliably limits the short circuit current that arises in the case of a non-regular operating state, it is proposed that the electrochemical cell comprises an electrically conductive sealing element, which seals the through-opening of the housing and electrically conductively connects the cell terminal to the housing.

Abstract: The aim of the invention is to provide an electrochemical cell that can be produced as simply as possible and has a long service life. This is achieved in that the electrochemical cell comprises a first contact element that connects a first cell terminal to a first connection conductor and that is fixed to a cover element of the electrochemical cell by means of a first potting element in a first connection region, said first potting element being made of a first polymer material that comprises or is made of a first resin material, and/or the electrochemical cell comprises a second contact element that connects a second cell terminal to a second connection conductor and that is fixed to the cover element by means of a second potting element in a second connection region, said second potting element being made of a second polymer material that comprises or is made of a second resin material.

Abstract: A method and system for adapting the voltage supplied by a high performance electrochemical storage device provide for: supplying a voltage for a load using a high-performance electrochemical storage device; monitoring the temperature of the high-performance electrochemical storage device; an adapting the voltage supplied by the high-performance electrochemical storage device as a function of a change in the monitored temperature thereof in a way that counters a change in the value of the power density of the high-performance electrochemical storage device attributable to the temperature change.

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 and system for adapting the voltage supplied by a high performance electrochemical storage device provide for: supplying a voltage for a load using a high-performance electrochemical storage device; monitoring the temperature of the high-performance electrochemical storage device; an adapting the voltage supplied by the high-performance electrochemical storage device as a function of a change in the monitored temperature thereof in a way that counters a change in the value of the power density of the high-performance electrochemical storage device attributable to the temperature change.

Abstract: A hybrid supercapacitor, including at least one negative electrode that includes a statically capacitive active material, an electrochemical redox active material, or a mixture thereof, at least one positive electrode that includes a statically capacitive active material, an electrochemical redox active material, or a mixture thereof, at least one separator that is situated between the at least one negative electrode and the at least one positive electrode, and an electrolyte composition, with the condition that at least one electrode includes a statically capacitive active material, and at least one electrode includes an electrochemical redox active material, the electrolyte composition being a liquid electrolyte composition and including at least one liquid, aprotic, organic solvent, at least one conducting salt, and at least one additive.

Abstract: A hybrid supercapacitor, including at least one negative electrode having a statically capacitive active material, an electrochemical redox-active material, or a mixture of them; at least one positive electrode having a statically capacitive active material, an electrochemical redox-active material, or a mixture of them; at least one separator situated between the at least one negative electrode and the at least one positive electrode; and an electrolyte mixture; with the provision that at least one electrode includes a statically capacitive active material, and at least one electrode includes an electrochemical, redox-active material; the electrolyte mixture being a liquid electrolyte mixture and including at least one liquid, aprotic, organic solvent, at least one conducting salt, and at least one at least partially halogenated, aromatic compound.

Abstract: A hybrid supercapacitor, including at least one negative electrode that includes a statically capacitive active material, an electrochemical redox active material, or a mixture thereof, at least one positive electrode that includes a statically capacitive active material, an electrochemical redox active material, or a mixture thereof, at least one separator that is situated between the at least one negative electrode and the at least one positive electrode, and an electrolyte composition, with the condition that at least one electrode includes a statically capacitive active material, and at least one electrode includes an electrochemical redox active material, the electrolyte composition being a liquid electrolyte composition and including at least one liquid, aprotic, organic solvent, at least one conducting salt, and at least one additive.

Abstract: A hybrid supercapacitor, including at least one negative electrode having a statically capacitive active material, an electrochemical redox-active material, or a mixture of them; at least one positive electrode having a statically capacitive active material, an electrochemical redox-active material, or a mixture of them; at least one separator situated between the at least one negative electrode and the at least one positive electrode; and an electrolyte mixture; with the provision that at least one electrode includes a statically capacitive active material, and at least one electrode includes an electrochemical, redox-active material; the electrolyte mixture being a liquid electrolyte mixture and including at least one liquid, aprotic, organic solvent, at least one conducting salt, and at least one at least partially halogenated, aromatic compound.

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: 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 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.