Abstract: The invention relates to a separator plate for an electrochemical system, comprising a first and a second plate, which are essentially congruently arranged on top of one another. The first and/or second plates furthermore include at least one elongated projection, which protrudes on opposite sides from a plate plane of the separator plate and extends along the plate plane from an outer edge to an interior of the separator plate so that the projection of the first plate and/or the projection of the second plate, if necessary together, form a receptacle for a connector pin. The projection of the first plate or the projection of the second plate includes an indentation directed toward the respective opposite plate for fixing the connector pin in the receptacle in a force-fit and/or form-locked manner.

Abstract: A composite cathode active material, a cathode and a lithium battery each including the composite cathode active material, and a method of manufacturing the composite cathode active material. The composite cathode active material includes a core including a plurality of primary particles, and a shell disposed on the core, wherein a primary particle of the plurality of primary particles includes a lithium nickel transition metal oxide, the shell includes a first composition and a second composition, wherein the first composition contains a first metal and the second composition contains a second metal, wherein the first metal includes a metal of Groups 2, 4, 5, and 7 to 15, the second metal includes a metal of Group 3, and the first composition includes a first phase and the second composition includes a second phase that is distinguishable from the first phase.

Abstract: Provided is an energy harvesting device for producing electric power by conduction of alkali ions, including a laminated film in which two-dimensional (2D) materials are laminated and assembled, wherein the laminated film includes a first region into which alkali ions are introduced, a second region into which alkali ions are introduced at a concentration lower than that of the first region or into which alkali ions are not introduced, and a third region located between the first region and the second region to divide the first region and the second region, and in which an interlayer distance between the 2D materials is fixed by physical constraints.

Abstract: An end cell assembly for a fuel cell stack includes an end plate and at least two inactive anode parts disposed adjacent to the end plate. Each inactive anode part comprises a nickel foam anode disposed directly above an anode current collector and a separator sheet disposed 5 above the nickel foam anode.

Abstract: The present disclosure relates generally to portable energy generation devices and methods. The devices are designed to covert formic acid into released hydrogen, alleviating the need for a hydrogen tank as a hydrogen source for fuel cell power. In particular, an electricity generation device for powering a battery comprising a formic acid reservoir containing a liquid consisting of formic acid; a reaction chamber capable of using a catalyst and heat to convert the formic acid to hydrogen and carbon dioxide; a fuel cell that generates electricity; a delivery system for moving converted hydrogen into the fuel cell; and a battery powered by electricity generated by the fuel cell is provided.

Abstract: Pouch cell having a positive contact lug and a negative contact lug, in which contact lugs electrical contact can be made with the pouch cell pouch cell and the pouch cell can be charged and discharged in this way, wherein the pouch cell is of planar design and has a flat cell surface which extends parallel in relation to the positive contact lug and the negative contact lug, wherein the positive contact lug has an upper positive connecting element and a lower positive connecting element, which positive connecting elements are arranged on opposite sides of the positive contact lug, and the negative contact lug has an upper negative connecting element and a lower negative connecting element, which negative connecting elements are arranged on opposite sides of the negative contact lug.

Abstract: The present disclosure discloses an end cover assembly, an energy storage device and electrical equipment. The end cover assembly includes an end cover provided with an outlet hole penetrating therethrough, an electrode terminal arranged on one side of the end cover, a sealing member including a first sealing portion and a plastic member including a first plastic portion. A projection, on the end cover of the electrode terminal along a thickness direction of the end cover covers the outlet hole, and a first gap surrounding the outlet hole is formed between the electrode terminal and the end cover. The first sealing portion fills one side of the first gap close to the outlet hole. The first plastic portion fills one side of the first gap away from the outlet hole; and a second gap is formed between the first sealing portion and the first plastic portion.

Abstract: The present disclosure relates to a sealing arrangement, comprising: an elastomeric sealing element, which comprises a foamed material containing microspheres, and a metal layer having a surface structuring, the surface structuring comprising a plurality of depressions, wherein the sealing element is configured as a coating of the metal layer and is arranged at least in some areas on the surface structuring, wherein a concentration of the microspheres in the sealing element, measured perpendicular to the surface of the metal layer, is inhomogeneous. The disclosure additionally relates to a plate assembly, to an electrochemical system, and to a method for producing the sealing arrangement.

Abstract: The present disclosure is to suppress the scratching of or damage to an exterior body or current collectors caused by displacement of terminals connected to electrode bodies when a battery expands or contracts. The displacement of terminals when a battery expands or contracts is prevented by arranging the protruding positions of the terminals side by side with at least one of a positive electrode terminal and a negative electrode terminal formed in a crank-like shape, and supporting the positive electrode terminal and the negative electrode terminal by a holder.

Abstract: A fuel cell includes a cell stack including a plurality of unit cells stacked in a first direction, a first end plate and a second end plate disposed at respective side ends of the cell stack, and an enclosure coupled to at least one of the first end plate or the second end plate to envelop a side portion of the cell stack, wherein an end portion of the enclosure comprises at least one protruding portion protruding toward the end plate to which the enclosure is coupled, among the first end plate and the second end plate, and wherein the end plate coupled to the enclosure comprises at least one receiving recess formed therein to receive the at least one protruding portion.

Abstract: Provided is an electrolyte for a flow battery, the electrolyte being supplied to a flow battery, in which a total concentration of ions of elements of groups 1 to 8 and ions of elements of groups 13 to 16 in the fifth period of the periodic table, and ions of elements of groups 1, 2, and 4 to 8 and ions of elements of groups 13 to 15 in the sixth period of the periodic table, the ions being impurity element ions involved in generation of a gas containing elemental hydrogen, may be 610 mg/L or less and a concentration of vanadium ions may be 1 mol/L or more and 3 mol/L or less.

Abstract: A buckling structure for a battery of a handheld power tool includes a horizontal opening end formed at a handheld seat of the power tool, a buckling structure arranged on top of a battery base and configured to mutually guide, insert and buckle into the opening end to be integrally attached thereto, the buckling structure comprising: a guiding slot formed at a front side surface of the battery base, two receiving slots formed at two sides of the guiding slot respectively, a pressing member arranged inside the guiding slot and two buckling members arranged inside the receiving slot respectively, and an elastic element connected to the pressing member and each of the buckling members respectively, thereby achieving an assembly and buckling structure having single direction movement and stable, durable structure that is convenient to use and operation.

Abstract: The present invention relates to a negative electrode active material including a silicon-based composite and a carbon-based material, wherein the silicon-based composite includes SiOx (0?x?2) including pores, a polymer disposed in the pores, and a metal compound disposed on a surface of the SiOx (0?x?2) or on the surface and inside of the SiOx (0?x?2), wherein the metal compound is a compound including at least one element selected from the group consisting of lithium (Li), magnesium (Mg), calcium (Ca), and aluminum (Al), a method of preparing the same, and a negative electrode and a lithium secondary battery which include the negative electrode active material.

Abstract: A method for sealing fuel cell components includes providing a fuel cell component and a screen printing system. A seal can be applied to a predetermined location on the fuel cell component via the screen printing system. The seal can be cured and bonded. A fuel cell can include a plurality of fuel cell components. A seal can be disposed between each of the fuel cell components. The seal is printed via a screen printing process.

Abstract: A fuel cell includes: an electrolyte layer; a base electrode formed on one side of the electrolyte layer; and a catalyst electrode formed on the other side of the electrolyte layer to be apart from the base electrode with the electrolyte layer interposed therebetween. The catalyst electrode includes: a first electrode portion that covers a part of the electrolyte layer; and a second electrode portion that covers a part of a surface of the first electrode portion to form an electrode portion interface in contact with the first electrode portion.

Abstract: The present disclosure relates to a battery pack comprising: a module assembly comprising two or more battery modules, wherein each of the battery modules comprises a battery core and an end plate, a plurality of battery cores are arranged side by side along a length direction of the battery pack, the end plate is located on at least one side of the plurality of battery cores in the length direction, and the two or more battery modules are arranged side by side along a width direction of the battery pack; and a limiting plate disposed on at least one side of the module assembly in the length direction and correspondingly to the end plate, wherein the limiting plate comprises an inner side surface towards the end plate.

Abstract: A secondary battery terminal is provided which is constituted by dissimilar metals and which has a structure capable of preventing liquid from penetrating into a boundary between the dissimilar metals of the terminal. The terminal disclosed herein includes a plate-like metallic first member and a second member which is metallically joined to one plate surface of the first member and which is constituted by a metal that differs from a metal constituting the first member. A first stepped portion constituted by an end of the second member, which is more protruded than the one plate surface of the first member, is formed at a boundary between the plate surface and the metallically-joined second member and, further, a second stepped portion which protrudes from the one plate surface of the first member is formed on the plate surface.

Abstract: Hybrid electrodes for batteries are disclosed having a protective electrochemically active layer on a metal layer. Other hybrid electrodes include a silicon salt on a metal electrode. The protective layer can be formed directly from the reaction between the metal electrode and a metal salt in a pre-treatment solution and/or from a reaction of the metal salt added in an electrolyte so that the protective layer can be formed in situ during battery formation cycles.

Abstract: A fuel cell unit including: a stack case; stacked fuel cells; current collector plates; and tabs, wherein the power converter has a power converter case, and a power conversion component, wherein the bus bar is disposed in a slit provided on the stack case, wherein the bus bars each have a current collector plate connecting portion for connecting to the tabs at a first surface, a power conversion component connection portion connected to the power conversion component at a second surface, and a plurality of connecting portions for connecting the current collector plate connecting portion and the power conversion component connecting portion, and wherein the connecting portions each have a plate surface intersecting the plane belonging to the first surface and the plane belonging to the second surface.

Abstract: A button-type battery including a package assembly and a cell assembly is provided. In actual application, as part of a sealing wall is recessed inwards in a direction to a battery reservoir so as to form a locking boss, as such, when a battery cover is being assembled, the locking boss is pressed against part of a sealing plastic ring so that the part of the sealing plastic ring is in tight contact with a sealing edge, and a battery cup can be locked to the battery cover by means of the locking boss, thereby preventing easy detachment of the battery cover from the battery cup to cause exposure of a rolled cell. The battery cover is applied with a strong locking force from the battery cup, greatly improving the safety of the button-type battery.