Abstract: A lithium-ion rechargeable battery negative electrode active material and a preparation method thereof, a lithium-ion rechargeable battery negative electrode plate, and a lithium-ion rechargeable battery are disclosed. The negative electrode active material includes a carbon core and a coating layer formed on a surface of the carbon core, a material of the coating layer includes amorphous carbon and a doping element, and the doping element includes element nitrogen. The lithium-ion rechargeable battery negative electrode active material has the carbon core, and the coating layer that includes the doping element and the amorphous carbon is provided on the surface of the carbon core.

Abstract: The invention belongs to the technical field of material synthesis, and discloses a nitrogen-doped hollow cobaltosic oxide and a preparation method and application thereof. A chemical formula of the nitrogen-doped hollow cobaltosic oxide is Co3O4—COF-T-D@C—N; and the COF-T-D is a covalent organic framework. Due to an open hollow structure, the nitrogen-doped hollow cobaltosic oxide of the invention has a large specific surface area, thus having a large contact area with an electrolyte, which is convenient for lithium ions to transport therein. The open hollow structure also prevents a volume effect from being generated during charging and discharging, and nitrogen is introduced for doping, so that granules can be gradually activated to increase the specific surface area and active sites, a discharge (cycle) stability of the material is improved, and a rate performance of the material is improved.

Abstract: A system and a method for forming a composite electrolyte structure are provided. An exemplary composite electrolyte structure includes, at least in part, polymer electrolyte preforms that are bonded into the composite electrolyte structure.

Abstract: A composite polymer electrolyte membrane including a polymer electrolyte and a porous substrate, and having a dry tensile modulus of 100 N/cm or more per width and a wet tensile modulus of 35 N/cm or more per width. Enhancing the mechanical characteristics of the electrolyte membrane results in providing an electrolyte membrane that achieves good dry-wet cycle durability.

Abstract: A battery cell includes electrode assemblies arranged in a first direction, where an end part of each electrode assembly along a second direction perpendicular to the first direction is provided with a tab; and a connection member configured to connect tabs of the electrode assemblies and an electrode terminal of the battery cell. The connection member includes a main body portion and a pin, the main body portion extends along the first direction, and includes a first surface and a second surface perpendicular to the second direction, the main body portion is provided with a plurality of through grooves passing through the first surface and the second surface, and the plurality of through grooves are respectively configured to accommodate the tabs of the plurality of electrode assemblies.

Abstract: The present invention relates to a solid electrolyte composition comprising: a) at least one (per)fuoropolyether comprising a (per)fluoropolyoxyalkylene chain [chain (Rpf)] having two chain ends, wherein at least one chain end has formula (I): —[CH(J)CH2O]na[CH2CH(J)O]na?—H??(I) wherein each J is independently H, aryl, straight or branched alkyl, and na and na?, equal to or different from each other, are zero or an integer from 1 to 50, with the proviso that na+na? is from 1 to 50; b) a poly(alkylene oxide) comprising chains of formula (II): R1B—[OCHR1A(CH2)jCHR2A]n—OR2B??(II) wherein each of R1A and R2A is independently a hydrogen atom or a C1-C5 alkyl group, j is zero or an integer of 1 to 2, R1B and R2B is independently a hydrogen atom or a C1-C3 alkyl group, and n is an integer from 5 to 1000, and c) at least one lithium salt.

Abstract: The present invention relates to a temperature control system for effective cooling and heating of rechargeable battery cells, in particular lithium (Li) ion batteries, wherein the temperature control module comprises an outer shell (1) made of a polymer material, which surrounds at least one heat-conducting layer made of unidirectional carbon fibre composite (2) and has, on each of two opposing edge regions of the main surfaces thereof, a conduit (3) for conveying a heat transfer medium, the conduits (3) extending along the edge regions from one end to the other; at least two layers of unidirectional carbon fibre composite (2) arranged one above the other are preferably provided, and an intermediate layer (7) having throughflow channels (8) which connect the conduits (3) to one another is located between the layers.

Abstract: Disclosed is a method for preparing a novel granulated spherical graphite and, specifically, to a method for preparing a novel granulated spherical graphite, the method allowing a composite spherical graphite to be prepared from natural graphite discarded in a mechanical process, during the preparation of a spherical graphite having a diameter of tens of micrometers and mechanically obtained from scale-like natural graphite.

Abstract: A system for stacking fuel cells for a fuel cell stack includes a component part storage region to store the fuel cells, a finished product storage region to store a completed fuel cell stack transferred by an automated guided vehicle, and a plurality of stacking regions disposed between the component part storage region and the finished product storage region, where one side of each stacking region corresponding to the finished product storage region is formed as an entry and exit for the automated guided vehicle for the fuel cell stack, a stacking unit is disposed at each of remaining sides of the stacking region, and the stacking region is supplied with the fuel cells from the component part storage region by the automated guided vehicle to sequentially stack the fuel cells to manufacture the fuel cell stack.

Abstract: Articles and methods involving protective membranes for electrochemical cells are generally provided. In some embodiments, a composite protective layer comprising particles and a polymeric binder may be disposed on an electroactive material. The particles may be reactive with lithium, may capable of intercalating lithium, and/or may comprise intercalated lithium. In some embodiments, the electroactive material may be in the form of a first electroactive layer, and a second electroactive layer may be disposed on the composite protective layer. Certain embodiments relate to activating a composite protective layer by intercalating lithium into particles within the layer and/or by reacting the particles with lithium metal.

Abstract: A zinc-air battery includes an air cathode, a zinc anode, an electrolyte, and a housing, wherein the zinc-air battery includes a carbon dioxide scrubbing agent. A packaging for a zinc-air battery, wherein the packing includes a chamber having a carbon dioxide scrubbing agent, and the chamber is configured to contain the zinc-air battery during storage.

Abstract: A solid oxide fuel cell includes an anode that includes a porous layer including an electron conductive ceramics and an oxygen ion conductive ceramics, the porous layer of the anode being impregnated with an anode catalyst, an electrolyte layer that is provided on the anode and includes a solid oxide having oxygen ion conductivity, and a cathode that is provided on the electrolyte layer and has a porous layer including an electron conductive ceramics and an oxygen ion conductive ceramics, the porous layer of the cathode being impregnated with a cathode catalyst.

Abstract: A bipolar plate for a fuel cell, a fuel cell, and a method of designing a bipolar plate for a fuel cell having a flow field structure that includes a plurality of Representative Elementary Volumes (REVs) generated based on flow patterns generated by homogenized anisotropic porous media optimization. The flow field structure enhances fuel cell performance by facilitating lower pressure drop via minimized fluid flow resistance, and removal of accumulated water in the oxygen channel and the gas diffusion layer (GDL) under the ribs of the bipolar plate.

Abstract: An ECU calculates a surface potential of a negative electrode active material relative to a lithium reference potential, according to a battery model for calculating lithium concentration distribution inside the negative electrode active material. The ECU calculates a voltage drop amount associated with charging of a battery, using a charging current to the battery and a reaction resistance, and calculates a negative electrode potential by subtracting the voltage drop amount from the surface potential. The ECU corrects the negative electrode potential, using an SOC of the battery, an average current in a charging period of the battery, and an integrated current in the charging period.

Abstract: A separator plate assembly for an electrochemical system, comprising a first metal sheet and a second metal sheet, which are in contact with one another at least in areas along the flat sides thereof facing one another, the first metal sheet including a first through-hole, or a group of first through-holes, and a first embossed structure surrounding the first through-hole, or the group of first through-holes, of the first metal sheet, and the second metal sheet including a first embossed structure, which is arranged at least in sections in an area of the second metal sheet that is defined by a perpendicular projection of the first through-hole, or of the group of first through-holes, of the first metal sheet onto the second metal sheet.

Abstract: A cylindrical battery, as one example according to an embodiment of the present disclosure, is provided with: an electrode body formed by spirally winding a positive electrode and a negative electrode with a separator interposed therebetween; and a bottomed cylindrical exterior can for accommodating the electrode body. The negative electrode has a negative-electrode core body and a negative-electrode mixture layer provided on a surface of the negative-electrode core body. An exposed area in which the surface of the negative-electrode core body is exposed is formed on an outer circumferential surface of the electrode body, and the exposed area is in contact with the inner surface of the exterior can. The negative-electrode mixture layer contains, as a negative-electrode active material, graphite particles having an internal porosity of 5% or less and a fracture strength of 25-55 MPa.

Abstract: A cathode catalyst layer has two layers: a first catalyst layer on a gas diffusion layer side, and a second catalyst layer on an electrolyte membrane side. The first catalyst layer includes a first particulate conductive member, first catalyst particles, and a first fibrous conductive member, at least part of the first catalyst particles being supported on the first particulate conductive member. The second catalyst layer includes a second particulate conductive member and second catalyst particles, at least part of the second catalyst particles being supported on the second particulate conductive member. A catalyst support density D2 of the second catalyst particles on the second particulate conductive member is greater than a catalyst support density D1 of the first catalyst particles on the first particulate conductive member.

Abstract: A manufacturing method and a testing method for a positive active material mixture to manufacture the positive active material mixture as a mixture of a positive active material, a conductive material, and a disperse medium by mixing positive active material particles, conductive material particles, and the disperse medium, pressing to form a pressed surface by pressing a resultant product of the mixing by a pressure member, disperse-degree obtaining to obtain the disperse degree of the positive active material particles and the conductive material particles on the pressed surface, and determining to determine success and failure in the disperse degree obtained in the disperse-degree obtaining, the resultant product is taken as the positive active material mixture when a determination result of the determining is success, and the resultant product is taken back to the mixing when the determination result of the determining is failure.

Abstract: In an embodiment, a process for producing a particulate silicon-carbon nanocomposite (SCN) material includes: providing primary graphite particles carrying nanoscale silicon particles on outer surfaces thereof; performing a high shear mixing procedure to produce primary graphite particles carrying a multiplicity of silicon nanostructures exhibiting plate-like morphologies; distributing a source of amorphous carbon over the primary graphite particles carrying such silicon nanostructures; and producing by way of a carbonization procedure an amorphous carbon layer at least partially surrounding the outer surface of each primary graphite particle, within which such silicon nanostructures are embedded.

Abstract: The invention relates to composite materials comprising lithiated or partially-lithiated graphite or graphene, and silicon having particles sizes from about 1 ?m to about 100 ?m, and that have an electrochemical rest potential less than about 2 V measured against Li/Li+, wherein graphitic material is mixed with silicon powder in a molar ratio of 9:1 to 1:9 and with lithium powder to an amount of the lithium in the composite material in the range of about 10 molar % to 100 molar % of the stochiometrically maximally possible lithium absorption, and to methods for production thereof.