Abstract: An electrochemical device comprises a stack consisting of a plurality of electrochemical units which succeed one another along a stack direction and which each include a membrane electrode arrangement, a bipolar plate and at least one sealing element, at least one medium channel which extends along the stack direction, a flow field through which a medium can flow from the medium channel to another medium channel, and a connection channel through which the flow field and the medium channel are in fluid connection with one another, wherein the sealing arrangement includes a connection channel region in which the sealing arrangement crosses the connection channel, and at least one neighboring region which is located in front of or behind the connection channel region in the longitudinal direction of the sealing arrangement, wherein the sealing arrangement has a lower average height in the connection channel region than in the neighboring region.

Abstract: The present invention relates to a flag forming device after laser notching of a secondary battery for an electric vehicle, and particularly, to a flag forming device after laser notching of a secondary battery for an electric vehicle configured by stacking electrode rolls within a circular box, which makes a flag shape by notching an uncoated portion having no coating of a negative electrode and a positive electrode with a laser, and makes the uncoated flag made by laser notching pass through a flag forming unit before winding to enable an uncoated tap to be folded inward.

Abstract: A battery device and a method for producing a battery device for a motor vehicle. In said method, a cooling base element and a battery module are provided, and the battery module is mounted on the cooling base element, forming at least one gap between a battery module region and a cooling base region. A filling device is then coupled to at least one filling opening of at least one filling tube, with the at least one filling tube extending into the at least one gap, and a heat conducting medium is introduced from the filling device through the filling tube into the at least one gap.

Abstract: A hollow-chamber profile for fastening a battery module in a vehicle includes a first side wall and a second side wall which lies opposite the first side wall, where the first side wall and the second side wall are connected to one another via a bottom wall. Additionally, the hollow-chamber profile has a top wall which lies opposite the bottom wall, where the top wall is designed to interact with at least one fastening device for fastening the battery module. The hollow-chamber profile has at least one intermediate wall which extends between the side walls from the top wall in the direction of the bottom wall, where a wall thickness of the at least one intermediate wall is dimensioned in such a way that the fastening device can be introduced at least partially into the wall thickness of the at least one intermediate wall.

Abstract: All-vanadium sulfate redox flow battery systems have a catholyte and an anolyte comprising an aqueous supporting solution including chloride ions and phosphate ions. The aqueous supporting solution stabilizes and increases the solubility of vanadium species in the electrolyte, allowing an increased vanadium concentration over a desired operating temperature range. According to one example, the chloride ions are provided by MgCl2, and the phosphate ions are provided by (NH4)2HPO4.

Abstract: The present disclosure provides a non-aqueous electrolyte for a lithium-ion battery and a lithium-ion battery using the non-aqueous electrolyte. The non-aqueous electrolyte includes (a) a lithium, (b) a non-aqueous organic solvent, and (c) at least one compound represented by formula 1; where the non-aqueous electrolyte further includes at least one of the following components (d) and (e): (d) a nitrile compound including at least one of 1,3,6-hexane trinitrile, glycerol trinitrile, and 3-methoxypropionitrile, and (e) vinyl sulfate. Through the synergy effect between them, the positive electrode is protected and meanwhile the negative electrode is also be protected to a certain extent, and an impedance of a film is lowered. The battery has an excellent high temperature storage performance, high temperature cycle performance and low temperature charge and discharge performance.

Abstract: A lithium battery comprises cathode active material comprising particles of a transition metal oxide, each particle coated in an ion-conducting material that has an electrochemical stability window against lithium of at least 2.2 V, a lowest electrochemical stability being less than 2.0 V and a highest electrochemical stability being greater than 4.

Abstract: A negative electrode for a lithium metal battery, a manufacturing method thereof, and a lithium battery including the same. An adhesive layer including a binder and a conductive material between the negative current collector and the negative active material improves conductivity while also improving adherence between a negative current collector and a negative active material of the lithium battery.

Abstract: An energy storage device includes a negative electrode having a negative active material layer containing amorphous carbon as an active material, a curve attained by determining a rate of change (dQ/dV) in a potential (V) of the amorphous carbon in a discharge capacity (Q) of the amorphous carbon per unit quantity based on a result attained by measuring the potential (V) with respect to the discharge capacity (Q) and representing the rate of change (dQ/dV) with respect to the potential (V) has one or more peaks in a range in which the potential of the amorphous carbon is 0.8 V or more and 1.5 V or less, and a potential of the negative electrode at time of full charge is 0.25 V or more with respect to a lithium potential.

Abstract: Rechargeable lithium battery includes a negative electrode including a negative active material layer and a negative electrode functional layer disposed on the negative active material layer; a positive electrode including a positive active material; an electrolyte solution, wherein the negative electrode functional layer includes flake-shaped polyethylene particles, the electrolyte solution includes a lithium salt and a non-aqueous organic solvent, and the non-aqueous organic solvent includes about 60 volume % to about 80 volume % of a propionate-based solvent and about 20 volume % to about 40 volume % of a carbonate-based solvent.

Abstract: A polyolefin microporous film having a laminated structure provided with at least one layer A containing a polyolefin and at least one layer B containing a polyolefin. 0 mass % to less than 3 mass % of polypropylene is contained in layer A and 1 mass % to less than 30 mass % of polypropylene is contained in layer B. When the proportion of polypropylene contained in layer A is represented by PPA (mass %) and the proportion of polypropylene contained in layer B is represented by PPB (mass %), PPB>PPA. In the polyolefin microporous film, the heat shrinkage ratio in TD at 120° C. measured upon applying, in MD, a constant load determined on the basis of the relationship: load (gf)=0.01×piercing strength (gf) of polyolefin microporous film×length (mm) in TD of polyolefin microporous film, is 10 to 40% inclusive.

Abstract: A nonaqueous electrolyte secondary battery includes a positive electrode, a negative electrode and a separator disposed between the positive electrode and the negative electrode, wherein the separator includes an inorganic filler layer which includes a first filler layer containing phosphate salt particles and a second filler layer disposed on the first filler layer and containing inorganic particles more heat resistant than the phosphate salt particles, and the BET specific surface area of the phosphate salt particles is in the range of not less than 5 m2/g and not more than 100 m2/g.

Abstract: The invention provides an automated batch sample preparation method for button battery, comprising the following steps: preparing an electrolyte and elements of different specifications, presetting an injection amount of a liquid injection component, scanning and recording the identification information of the elements by a scanning component, grabbing the elements onto a sealing component, injecting the electrolyte into the elements on the sealing component, sealing the elements as a button battery by the sealing component, removing the button battery, then repeat the above steps. The automated batch sample preparation method for button battery provided by the invention has the advantages of high automation degree, simple operation, high-precision assembly and high efficiency. The injection amount can be adjusted and controlled, and button batteries with different specifications can be produced in batch. The information recorded by the scanning component can facilitate the optimization of the process.

Abstract: A battery unit includes a secondary battery, a first trap, and a second trap. The secondary battery includes a battery case provided with a gas vent valve, and an electrolyte solution enclosed in the battery case. The first trap includes a mesh material disposed outside the battery case so as to oppose and cover the gas vent valve. The second trap includes a liquid retaining material made of a non-flammable material and disposed further outward of the first trap so as to oppose and cover the gas vent valve.

Abstract: Methods of preparing Si-based anode slurries and anode made thereof are provided. Methods comprise coating silicon particles within a size range of 300-700 nm by silver and/or tin particles within a size range of 20-500 nm, mixing the coated silicon particles with conductive additives and binders in a solvent to form anode slurry, and preparing an anode from the anode slurry. Alternatively or complementarily, silicon particles may be milled in an organic solvent, and, in the same organic solvent, coating agent(s), conductive additive(s) and binder(s) may be added to the milled silicon particles—to form the Si-based anode slurry. Alternatively or complementarily, milled silicon particles may be mixed, in a first organic solvent, with coating agent(s), conductive additive(s) and binder(s)—to form the Si-based anode slurry. Disclosed methods simplify the anode production process and provide equivalent or superior anodes.

Abstract: An apparatus for shipping or storage of Li-ion batteries comprises a sealable outer bag fabricated from heat-resistant, permeable fabric, a first flexible thermal runaway shield (“TRS”) fabricated from low-permeability film configured to line a first inside surface of the outer bag, a second flexible TRS fabricated from low-permeability film configured to line a second inside surface of the outer bag, and at least one Li-ion battery configured to be disposed between the first flexible TRS and the second TRS of the sealable outer bag to provide a sealed outer bag.

Abstract: The invention provides a contact surface adjusting material for solid electrolytes and composite electrolyte system thereof. The contact surface adjusting material is mainly composed of a polymer base material, which is capable of allowing metal ions to move inside the material, and an additive, which is capable of dissociating metal salts and is served as a plasticizer. The contact surface adjusting material is applied to a surface of the solid electrolytes to construct a face-to-face transmission mode. Therefore, the problems of the high resistances caused by the directly contact of the solid electrolytes are eliminated.

Abstract: A sodium-ion battery comprising a biochar-based anode layer, an NaNiO2 cathode layer, and an metakaolin solid electrolyte pellets layer.

Abstract: A dehydrogenation method for hydrogen storage materials, which is executed by a fuel cell system. The fuel cell system includes a hydrogen storage material tank, a heating unit, a fuel cell, a pump, a water thermal management unit and a heat recovery unit. The described dehydrogenation method utilizes the heating unit and the heat recovery unit to provide thermal energy to the hydrogen storage material tank, so that hydrogen storage material is heated to the dehydrogenation temperature. The pump extracts hydrogen from the hydrogen storage material tank, so that the hydrogen storage material is under negative pressure (i.e. H2 absolute pressure below 1 atm), according to which the hydrogen storage material is dehydrogenated, and the dehydrogenation efficiency and the amount of hydrogen release are improved. The method n can reduce the dehydrogenation temperature of the hydrogen storage material, and reduce the thermal energy consumption for heating the hydrogen storage material.

Abstract: The present invention is directed to a method of coating an electrical current collector comprising treating a portion of a surface of the electrical current collector with an adhesion promoting composition to deposit a treatment layer over the portion of the surface of the electrical current collector, wherein the resulting surface of the electrical current collector comprises (a) a treated portion comprising the treatment layer and (b) a non-treated portion that lacks the treatment layer; electrodepositing an electrodeposited coating layer from an electrodepositable coating composition onto the surface of the electrical current collector to form a coated electrical current collector; and rinsing the coated electrical current collector, wherein the electrodeposited coating layer substantially adheres to the treated portion of the surface and does not adhere to the non-treated portion of the surface. Also disclosed are electrodes and electrical storage devices.