Abstract: A powder metallurgical molding forms an interconnector or an end plate for an electrochemical cell. The molding has a chromium content of at least 80% by weight, a basic shape of a plate and one or more flow fields with structuring formed on one or both of the main faces of the molding. A ratio of a maximum diameter Dmax of the molding, measured along the main face, to a minimum thickness dmin of a core region of the molding which extends along the flow field or fields and is not affected by the structuring lies in a range of 140?Dmax/dmin?350.

Abstract: A battery pack for a handheld power tool, having a cell holder that accommodates at least one battery cell, the battery cell having a cladding surface that runs parallel to a longitudinal axis, the cladding surface being limited by two end faces that run perpendicular to the longitudinal axis, and the cladding surface and the end faces forming an outer shell of the battery cell, and a battery pack electronics. The battery pack electronics includes at least one circuit board having contact elements for producing an electrical connection between the battery pack and the handheld power tool, in addition at least one contact arrangement corresponding to the battery cell is provided, the contact arrangement electrically contacting the corresponding battery cell at the cladding surface.

Abstract: The present disclosure relates to an electrode having improved safety and a secondary battery including the same. It is possible to prevent or significantly reduce an internal short-circuit between a positive electrode current collector and a negative electrode current collector and an internal short-circuit between a positive electrode current collector and a negative electrode active material layer, caused by nail penetration, by controlling the elongation of a positive electrode to 0.6-1.5%.

Abstract: A non-aqueous electrolyte secondary battery includes a positive electrode, a negative electrode, a first separator layer provided between the positive electrode and the negative electrode, the first separator layer facing the positive electrode, a second separator layer provided between the positive electrode and the negative electrode, the second separator layer facing the negative electrode, and a non-aqueous electrolyte held in the first separator layer and the second separator layer. The variable ? represents the porosity of the first separator layer, and the variable ? represents the porosity of the second separator layer, such that ??90% and the following expression is satisfied: 2??/??2.85.

Abstract: An internally-manifolded solid oxide fuel cell (SOFC) stack is described, including an anode interconnect structure integrated with a cathode interconnect structure. The anode interconnect structure includes a fuel flow field; and the cathode interconnect structure includes an air flow field. The two structures are configured to allow for parallel flow of air and fuel across a plane of the interconnect, while the manifold openings for the fuel are arranged in a cross-flow orientation across a plane of the interconnect structure. Related processes are also described, along with a power generation system that includes an SOFC incorporating this type of interconnect, attached directly or indirectly to at least one power block, such as a combustion engine.

Abstract: An ion exchanger for a cooling system of a fuel cell system includes: a communicating pipe part with the two ends thereof configured respectively to be connectable to predetermined piping arranged in the cooling system, and including a substantially linear shaped first flow path; and a storage case including a second flow path configured such that, when a part of the coolant introduced into the communicating pipe part branches from the coolant of the communicating pipe part and flows toward the second flow path, such partial coolant, after introduced into the second flow path, is allowed to flow therethrough and join again the remaining coolant of the communicating pipe part, while ion exchange resin is stored in the second flow path, wherein an introduction device for introducing the coolant into the second flow path is arranged in the inside of the communicating pipe part.

Abstract: A rechargeable battery includes a body including an electrolyte, the body configured to be charged and discharged; a protrusion protruding from the body and having a polarity corresponding to a positive electrode or a negative electrode; a depression recessed toward an inside of the body and having an opposite polarity to the polarity of the protrusion; and a resiliently deformable support disposed in either one or both of the inside of the depression and the outside of the protrusion.

Abstract: An electrochemical cell includes a negative electrode that contains lithium and an electrolyte system. In one variation, the electrolyte system includes a first liquid electrolyte, a solid-dendrite-blocking layer, and an interface layer. The solid dendrite-blocking layer is ionically conducting and electrically insulating. The dendrite-blocking layer includes a first component and a distinct second component. The dendrite-blocking layer has a shear modulus of greater than or equal to about 7.5 GPa at 23° C. The interface layer is configured to interface with a negative electrode including lithium metal on a first side and the dendrite blocking layer on a second opposite side. The interface layer includes a second liquid electrolyte, a gel polymer electrolyte, or a solid-state electrolyte. The dendrite-blocking layer is disposed between the first liquid electrolyte and the interface layer.

Abstract: A cathode active composite containing a nanoparticle composite of an amorphous matrix containing vanadium, oxygen and sulfur and crystalline regions of vanadium and oxygen embedded in the matrix is provided. Electrochemical cells and a reversible battery having a cathode containing the cathode active composite is also provided. In specific embodiments the battery is a magnesium battery.

Abstract: A process for making a superionic conducting salt includes: combining a primary salt and an impact member, the primary salt including an ordered phase and being an ionic conductor; impacting the primary salt with the impact member; and converting the primary salt to the superionic conducting salt in response to impacting the primary salt with the impact member at a conversion temperature to make the superionic conducting salt, the conversion temperature optionally being less than a thermally activated transition temperature that thermally converts the primary salt to the superionic conducting salt in an absence of the impacting the primary salt, and the superionic conducting salt including a superionic conductive phase in a solid state at less than the thermally activated transition temperature.

Abstract: A secondary battery capable of improving the cycle characteristics and the initial charge and discharge characteristics is provided. The secondary battery includes a cathode, an anode, and an electrolytic solution. The anode has an anode active material layer on an anode current collector. The anode active material layer contains a crystalline anode active material having silicon as an element, and is linked to the anode current collector.

Abstract: A protection arrangement including the first coating and another coating on metal structure of solid oxide cells, each solid oxide cell having at least two fuel cell structure plates made of metal to arrange gas flows in the cell, and an active electrode structure, which includes an anode side, a cathode side, and an electrolyte element between the anode side and the cathode side. The protection arrangement can include: a first metal oxide coating on a metallic structure in a first thermal spraying coating process of a liquid precursor being from at least one of nitrates and acetates based substances fed into thermal flame; and at least one other metal oxide coating formed at least partly simultaneously with the first coating process on the previously deposited metal oxide coating from a liquid precursor.

Abstract: There is provided a secondary battery including an electrode assembly having a stack structure of an anode/a separation film/a cathode, a pouch type exterior member configured of a lower surface in which a receiving part is formed and an upper surface covering the receiving part, a single electrode assembly or a plurality of electrode assemblies being received in the receiving part, and an electrode terminal formed outwardly of the pouch type exterior member, the secondary battery including: a sealing part formed by bonding edges of the pouch type exterior member, wherein a portion of the sealing part formed on a surface of the pouch type exterior member on which the electrode terminal is not formed outwardly of the exterior member is folded downwardly at an angle of 90 degrees.

Abstract: Applications for use with a rechargeable power unit. In one embodiment, the rechargeable power unit is configured to be releasably connected to one or more interchangeable attachments having an electric functionality. In one embodiment, an electric device is configured having a compartment and connection portion configured to receive and use the rechargeable power unit as a power source. In some embodiments, the rechargeable power unit can be obtained or exchanged at a battery exchange machine.

Abstract: Provided is a cartridge suitable for sensing a voltage of a battery cell through a center region and an edge, wherein two battery cells are provided in an upper portion and a lower portion so as to increase energy density, and a battery module including the cartridge. The cartridge includes: a mount frame including a pair of through windows provided sequentially in a length direction, and a lower sliding board, a lead mounting board, and an upper sliding board sequentially provided in a width direction between the pair of through windows; and cooling fins respectively covering the pair of through windows, wherein the lower sliding board and the upper sliding board are respectively provided on left and right of the lead mounting board to diagonally face each other.

Abstract: A redox flow battery includes first and second electrodes, a separator separating the first and second electrodes, an active material, an electrolytic solution containing a redox species, and a circulation mechanism. The active material is insoluble in the electrolytic solution. The circulation mechanism circulates the electrolytic solution between the first electrode and the active material. The redox species performs oxidation and reduction at the first electrode and is oxidized and reduced by the active material. The circulation mechanism includes an electrolytic solution container containing the active material and a permeation preventing unit. The electrolytic solution is brought into contact with the active material in the electrolytic solution container, and the redox species is oxidized and reduced by the active material. The permeation preventing unit is disposed adjacent the outlet for the electrolytic solution of the electrolytic solution container and prevents permeation of the active material.

Abstract: A highly-concentrated electrolyte system for an electrochemical cell is provided, along with methods of making the highly-concentrated electrolyte system. The electrolyte system includes a bound moiety having an ionization potential greater than an electron affinity and comprising one or more salts selected from the group consisting of: lithium bis(fluorosulfonyl)imide (LiFSI), sodium bis(fluorosulfonyl)imide (NaFSI), potassium bis(fluorosulfonyl)imide (KFSI), and combinations thereof bound to a solvent comprising dimethoxyethane (DME). The one or more salts have a concentration in the electrolyte system of greater than about 4M, and a molar ratio of the one or more salts to the dimethoxyethane (DME) is greater than or equal to about 1 to less than or equal to about 1.5. The one or more salts binds to the dimethoxyethane (DME) causing the electrolyte system to be substantially free of unbound dimethoxyethane (DME) and unbound bis(fluorosulfonyl)imide (FSI?).

Abstract: A method for fabricating an electrode includes: determining a thickness of an active layer; selecting lithium (Li) foil having a specified thickness; determining widths of one or more Li strips based on an active layer to Li layer weight ratio or volume ratio; laminating the active layer onto a conductive substrate; forming one or more grooves in the active layer exposing a bare surface of the conductive substrate; and pressing the one or more Li strips into the one or more grooves, wherein widths of the one or more grooves are slightly larger than the widths of the Li strips.

Abstract: According to an embodiment, an electrode is provided. The electrode group includes a stack. The stack includes a positive electrode, a negative electrode or negative electrodes, and separator. Each negative electrode includes a negative electrode current collector and a negative electrode layer provided on the negative electrode current collector. The electrode group satisfies following relational formulae (I) to (III): 10?a1/b1?16 (I); 0.7?D1/E1?1.4 (II); E1?85 (III). Here, the a1 [mm] is a thickness of the stack. The b1 [mm] is a thickness of the negative electrode current collector, or is a total thickness of the negative electrode current collectors. The D1 [?m] is a thickness of the positive electrode. The E1 [?m] is a thickness of the negative electrode.

Abstract: In a lid for a battery case where an annular thin portion is formed integrally with a lid main body by coining, a pair of ribs formed integrally with the lid main body so as to bulge from the lid main body and extending in a short direction of the lid main body are disposed on both sides of the annular thin portion in a long direction of the lid main body.