Abstract: invention relates to a distributing structure (10) for a fuel cell (1) in the form of a microporous layer, having: a multiplicity of particles (11), wherein the particles (11) are designed to provide the distributing structure (10) with mechanical stability and electrical conductivity, and wherein a multiplicity of pores (P) are formed between the particles (11) for the purposes of distributing reactants (H2, O2) through the distributing structure (10) and of discharging a product water (H2O), the invention providing, for this purpose, a multiplicity of fibres (12), which are distributed within the microporous layer such that the distributing structure (10) has a first diffusion coefficient (D1) in a first planar direction (x) in relation to the plane of extent (x, y) of the microporous layer, and that the distributing structure (10) has a second diffusion coefficient (D2) in a second planar direction (y) in relation to the plane of extent

Abstract: A lithium-sulfur cell includes a lithium-containing anode, a sulfur-containing cathode and a separator arranged between the lithium-containing anode and the sulfur-containing cathode. To suppress a shuttle mechanism and to prevent a loss of active material, the separator includes a base layer and a polysulfide barrier layer. The polysulfide barrier layer is formed on the cathode side of the separator.

Abstract: A separator for an energy store. The separator may be used in a lithium-sulfur battery in particular. To achieve improved cycle stability, the separator has at least one first layer and at least one second layer, the at least one first layer containing a material having an affine property with respect to at least one active electrode material, and the at least one second layer containing a material having a repellent property with respect to at least one active electrode material. The at least one first layer and the at least one second layer may be situated directly adjacent to one another. Also described is an energy store including the separator.

Abstract: A method of producing a cross-linked polyacrylonitrile-sulfur composite material, in which polyacrylonitrile is reacted with sulfur and at least one cross-linking agent to form a cross-linked polyacrylonitrile-sulfur composite material and the cross-linking agent includes at least one functional group, selected independently of one another from an ethylenically unsaturated functional group, an epoxy group and a thiirane group. In addition, the invention relates to a polyacrylonitrile-sulfur composite material, a cathode material, an alkali metal-sulfur cell or an alkali metal-sulfur battery as well as to an energy store.

Abstract: A battery system includes at least one lithium cell with an electrolyte having at least one polymer which is configured to be impregnated with an electrolyte fluid. In order to increase the capacity, the life and the safety of the battery system, the battery system further includes at least one electrolyte fluid metering device, by which at least one component of the electrolyte fluid can be supplied to the lithium cell and/or by which electrolyte fluid can be discharged from the lithium cell.

Abstract: In a method for producing an anode for a lithium cell, and/or a lithium cell as well as anodes and lithium cells of this type, to extend the service life of the lithium cell and to selectively form a first protective layer including electrolytic decomposition products, on an anode including metallic lithium, a first electrolyte is applied on the anode ex situ, i.e., prior to assembling the lithium cell to be produced. To stabilize the first protective layer, a second protective layer is applied in a subsequent method step.

Abstract: A separator of a lithium cell or battery includes (I) a protective layer that includes at least one single lithium-ion conducting polyelectrolyte, a lithium-ion conducting or lithium-ion conductive block copolymer, and/or an inorganic lithium-ion conductor, and (II) a contact layer that includes at least one polymer electrolyte made of (a) a lithium-ion conductive polymer that includes a main chain and at least one side chain and (b) at least one lithium conducting salt.

Abstract: A sensor system for detecting a leak of a system component from an electrochemical storage system, in particular a lithium-ion battery. To determine a defect in the electrochemical storage system, the sensor system includes a reaction chamber containing a detection component, and a measuring device for determining a physical variable within the reaction chamber. The value of the physical variable is changeable by a chemical reaction of the system component with the detection component, so that a leak of the system component is detectable via a change in the value of the physical variable. Also described is a sensor element for such a sensor system, an electrochemical storage system having such a sensor system or sensor element, the use of such a sensor system or sensor element, and a mobile or stationary system, for example an electric vehicle, equipped with the sensor system, the sensor element, or the storage system.

Abstract: The invention relates to a method for manufacturing an electrode for an electrochemical energy store, including the following steps: a) providing a base body; b) applying an active material matrix to the base body, the active material matrix including at least one binding agent, if necessary, an active material (1), and a pore forming agent (3), the pore forming agent (3) being soluble in a solvent, in which additional components of the active material matrix are insoluble or are soluble only under certain conditions; c) if necessary, drying the active material matrix; d) rinsing out the pore forming agent (3) by treating the active material matrix with the solvent and e) if necessary, introducing an active material into the produced pores of the active material matrix. Using such a method, a high cycle stability of the electrode may be implemented in a particularly simple and cost-effective way. The invention also relates to a method for manufacturing an electrochemical energy store.

Abstract: An energy store system, including at least one cell element situated in a cell region having an anode, a cathode and an electrolyte system that is situated between the anode and the cathode and that is particularly at least partially liquid, the anode, the cathode and/or the electrolyte system being configured so that, as a function of a charging or discharging process of the cell element, functioning material is situated in the electrolyte system, and the functional material situated in the electrolyte system being ascertainable qualitatively and/or quantitatively. Because of such an energy store system, operating states of an energy store or a cell may be ascertained particularly simply and accurately. Also described is a related state detection system.

Abstract: A battery, particularly a lithium-metal battery or a lithium-ion battery, having at least one galvanic cell surrounded by a cell housing. To increase the safety of the battery and to close up again a cell opened by a safety device or by a leakage, the inner chamber of the cell housing of the at least one cell includes a first chemical component, a chamber bordering on at least one section of the outer side of the housing including a second chemical component; a solid reaction product being developable by the chemical reaction of the first and second chemical components. The first component is containable in the electrolyte of the cell and the second component in a cooling and/or tempering arrangement. Also described is a cooling and/or tempering arrangement based on it, and an electrolyte, an electrolytic liquid, a safety system, a method and a mobile or stationary system.

Abstract: A method of producing a cross-linked polyacrylonitrile-sulfur composite material, in which polyacrylonitrile is reacted with sulfur and at least one cross-linking agent to form a cross-linked polyacrylonitrile-sulfur composite material and the cross-linking agent includes at least one functional group, selected independently of one another from an ethylenically unsaturated functional group, an epoxy group and a thiirane group. In addition, the invention relates to a polyacrylonitrile-sulfur composite material, a cathode material, an alkali metal-sulfur cell or an alkali metal-sulfur battery as well as to an energy store.

Abstract: An electrode for an energy store, in particular for a lithium-ion battery. To achieve a particularly good and long-term stable capacitance, the electrode includes an active material, optionally a binder, optionally a conductive additive, and a sorption agent; intermediate stages of the active material arising during a charging and/or discharging procedure of the energy store may be immobilized by the sorption agent. Furthermore, also described is a method for manufacturing an electrode for an energy store, and the use of a sorption agent for manufacturing an electrode for an electrochemical energy store.

Abstract: An electrochemical cell that includes a negative electrode, a positive electrode, a protective layer situated on the negative electrode, which separates the negative electrode from the positive electrode, and an electrolyte, the negative electrode at least partially including metallic lithium, and the protective layer situated on the negative electrode being formed of a composite material, including at least one first material and one second material. Also described is a corresponding method for manufacturing an electrochemical cell.

Abstract: In a method for preparing a cathode material for an alkali-sulfur cell, e.g., a lithium-sulfur cell, at least one polyacrilonitrile-sulfur composite material and elemental sulfur are mixed, in order to increase the voltage, the capacitance and the energy density.

Abstract: A method for manufacturing a lithium-ion conducting composite material, in particular a lithium-ion conducting functional layer for a lithium cell. The composite material or the functional layer is formed from a mass which includes particles of at least one inorganic material designed for forming a lithium-ion conducting network without sintering, and at least one polymeric binder. Functional layers of this type, a lithium cell, a lithium battery provided therewith, and to their use are also described.

Abstract: A lithium-ion battery having an anode, a cathode, a separator, and an electrolyte connected to the anode and to the cathode, encompassing at least one lithium salt as an electrolyte salt and one solvent solubilizing the lithium salt, wherein the lithium-ion battery contains at least one cation exchanger that can release Li+ and bind H+, and that is in contact with the electrolyte. A method is also described for preventing the dissolution of metals out of a cathode of a lithium-ion battery and/or damage to an SEI layer of an anode of the lithium-ion battery, encompassing bringing an electrolyte of the lithium-ion battery into contact with at least one cation exchanger that can release Li+ and bind H+.

Abstract: The invention relates to a method for preparing a polyacrylonitrile-sulfur composite material, in which, polyacrylonitrile is converted to cyclized polyacrylonitrile, and the cyclized polyacrylonitrile is reacted with sulfur to form a polyacrylonitrile-sulfur composite material. By a separation of the preparation method into two partial reactions, the reaction conditions are advantageously able to be optimized for the respective reactions and a cathode material is able to be provided for alkali-sulfur cells with improved electrochemical properties. In addition, the invention relates to a polyacrylonitrile-sulfur composite material, a cathode material, an alkali-sulfur cell or an alkali-sulfur battery as well as to an energy store.

Abstract: The invention relates to a method for manufacturing an electrode for an electrochemical energy store, including the following steps: a) providing a base body; b) applying an active material matrix to the base body, the active material matrix including at least one binding agent, if necessary, an active material (1), and a pore forming agent (3), the pore forming agent (3) being soluble in a solvent, in which additional components of the active material matrix are insoluble or are soluble only under certain conditions; c) if necessary, drying the active material matrix; d) rinsing out the pore forming agent (3) by treating the active material matrix with the solvent and e) if necessary, introducing an active material into the produced pores of the active material matrix. Using such a method, a high cycle stability of the electrode may be implemented in a particularly simple and cost-effective way. The invention also relates to a method for manufacturing an electrochemical energy store.

Abstract: A battery pouch cell film composite having at least one metal layer, at least two adhesion promotion layers, and at least two polymer layers, at least one of the polymer layers being configured in self-healing fashion and that layer having in the interior physically delimited regions that contain at least one compound capable of polymerization.