Abstract: Provided are a nickel-based active material for a lithium secondary battery, a method of preparing the nickel-based active material, and a lithium secondary battery including a positive electrode including the nickel-based active material. The nickel-based active material includes at least one secondary particle that includes at least two primary particle structures, the primary particle structures each including a porous inner portion and an outer portion having a radially arranged structure, and the secondary particle including at least two radial centers.

Abstract: The present invention provides a single electrode assembly, in which a plurality of negative electrodes and positive electrodes are stacked alternately and repeatedly, and separators are disposed between the plurality of negative electrodes and positive electrodes, the electrode assembly including: a negative electrode tab part formed on one end of the electrode assembly and extending from the plurality of negative electrodes; a positive electrode bus bar spaced apart from the negative electrode tab part on the one end of the electrode assembly and electrically connecting the plurality of the positive electrodes; a positive electrode tab part formed on the other end of the electrode assembly opposite to the one end and extending from the plurality of positive electrodes; and a negative electrode bus bar spaced apart from the positive electrode tab part on the other end of the electrode assembly and electrically connecting the plurality of the negative electrodes.

Abstract: An additive for a non-aqueous electrolyte solution that can suppress the initial gas generation amount when used in a non-aqueous electrolyte solution battery. The additive for a non-aqueous electrolyte solution is represented by any one of formulae [1] to [4]: wherein R1, R2, R3, R4, X1, X2 and Y are as defined in the specification.

Abstract: The present disclosure relates to a rechargeable battery including an electrode assembly that includes a first electrode, a second electrode, and a separator disposed between the first electrode and the second electrode, a first electrode tab that is electrically connected with the first electrode, and includes at least one first bent portion, a second electrode tab that is electrically connected with the second electrode, and includes at least one second bent portion, and exterior member that receives the electrode assembly, and a reinforcement member that is disposed in the first exterior member, while being disposed adjacent to at least one of the first electrode tab and the second electrode tab.

Abstract: To provide a method for inspecting a gas leak from a fuel cell stack, whereby a leak position can be efficiently identified in a short time. A method for inspecting a gas leak from a fuel cell stack includes a jig installation step of installing a division jig that covers an outer surface, on which stacked end faces of the fuel cell stack are exposed, that divides the outer surface into a plurality of regions, and that includes a plurality of inspection spaces on each divided region. The method further includes a first leak inspection step of identifying a leak region, in which the gas leak occurs, with a gas sensor arranged in each of the inspection spaces.

Abstract: An electrochemical cell is provided, which includes a cathode comprising a three dimensional (3D) porous cathode structure, an anode, an electrolyte separator, comprised of a ceramic material, located between the cathode and the anode, and a cathode current collector, wherein the cathode is located between the cathode current collector and the electrolyte separator. The 3D porous cathode structure includes ionically conducting electrolyte strands extending through the cathode from the cathode current collector to the electrolyte separator, pores extending through the cathode from the cathode current collector to the electrolyte separator, and an electronically conducting network extending on sidewall surfaces of the pores from the cathode current collector to the electrolyte separator.

Abstract: There is provided an apparatus for manufacturing a cell stack for a secondary battery, the apparatus including: a stack table on which a negative electrode plate and a positive electrode plate are sequentially stacked with a separator interposed therebetween; an electrode-plate-stacking-position adjusting means; a clamping means; a drive means configured to reciprocally turn the stack table, the electrode-plate-stacking-position adjusting means, and the clamping means to both sides so that the separator supplied to the stack table is folded in a zigzag shape and the negative electrode plate and the positive electrode plate are alternately stacked between folded portions of the separator; and a support means configured to support the stack table, the electrode-plate-stacking-position adjusting means, the clamping means, and the drive means.

Abstract: A linear time varying model predictive control (LTV-MPC) framework is developed for degradation-conscious control of automotive polymer electrolyte membrane (PEM) fuel cell systems. A reduced-order nonlinear model of the entire system is derived first. This nonlinear model is then successively linearized about the current operating point to obtain a linear model. The linear model is utilized to formulate the control problem using a rate-based MPC formulation. The controller objective is to ensure offset-free tracking of the power demand, while maximizing the overall system efficiency and enhancing its durability. To this end, the fuel consumption and the power loss due to auxiliary equipment are minimized. Moreover, the internal states of the fuel cell stack are constrained to avoid harmful conditions that are known stressors of the fuel cell components.

Abstract: A heat rejection panel comprising a first and a second plate. The first plate comprises an oscillating heat pipe face having a plurality of first opened elongated recesses formed therein, and the second plate comprises an oscillating heat pipe face having a plurality of second open elongated recesses formed therein. The first plate oscillating heat pipe face is hermetically sealed to the second plate oscillating heat pipe face forming a bond joint therebetween. The first plate caps the second open elongated recesses and the second plate caps the first open elongated recesses such that first open elongated recesses are physically and fluidly connected to the second open elongated recesses, thereby forming at least one non-planar oscillating heat pipe channel within the panel that reciprocates back and forth across the bond joint having the bond joint as a longitudinal axis.

Abstract: A stacking apparatus provided with a flexible conveyor plate (20), a clamp mechanism (25) for holding a sheet-shaped member carried on the conveyor plate (20) against the conveyor plate (20), and an adjustment mechanism able to adjust the degree of curvature of the conveyor plate (20). When stacking a new sheet-shaped member (1) carried on the conveyor plate (20) onto already stacked sheet-shaped members (1), the adjustment mechanism makes the conveyor plate (20) deform from a flat state to a curved state to make the new sheet-shaped member (1) carried on the conveyor plate (20) deform from a flat state to a curved state.

Abstract: A method for producing a lithium-ion cell is provided. The electrochemically active coating of an electrode is brought into contact with an electrolyte or an auxiliary liquid before a winding or cutting operation. This method is suitable in particular for continuously producing lithium-ion cells by means of processes proceeding at high speed, such as winding processes.

Abstract: The invention relates to the simultaneous use of a first salt comprising a nitrate anion (NO3?) and a second salt comprising an anion other than nitrate, at least one of the first and second salts being a lithium salt, as ionic conductivity promoters in a rechargeable lithium-metal-gel battery. The invention also relates to a lithium-gel battery comprising a mixture of said first salt and said second salt, to a non-aqueous gel electrolyte comprising such mixture and to a lithium battery positive electrode comprising said mixture.

Abstract: Exemplary systems and methods enable efficient and reliable positioning, assembly, retention, interconnection, and management of battery cells in battery packs, for example battery packs utilized in electric vehicles.

Abstract: A fuel cell system includes a fuel cell stack, an oxidizing gas supply system, a cooling medium circulation pump, a stack temperature acquisition unit, and a control unit. After a first time point when a change in an acquisition temperature turns from downward to upward after the change in the acquisition temperature turns from upward to downward for the first time after the start of the warm-up operation processing, the control unit sets a decrease speed in cases of decreasing a rotational speed of the cooling medium circulation pump to a smaller value than a value set before the first time point.

Abstract: A gas supply system includes: a plurality of tanks that are filled with a gas; a supply pipe that branches and is connected to the plurality of tanks and supplies the gas to a destination of supply; a plurality of shutoff valves that shut off connections between the plurality of tanks and the supply pipe; a plurality of temperature measuring units that measures an internal temperature of the plurality of tanks; and a control unit that determines the shutoff valve that is to be opened first out of the plurality of shutoff valves by using the internal temperatures of the plurality of tanks, which are measured at a time of start of the supply of the gas, when the control unit switching the plurality of shutoff valves from a closed state to an open state at the time of start of the supply of the gas.

Abstract: A connection module can be attached to an electricity storage element group in which a plurality of electricity storage elements each including a positive and a negative electrode terminal are aligned, the connection module including: a bus bar including a pair of terminal connection portions that are to be respectively connected to the electrode terminals of the adjacent electricity storage elements; and an insulating protector that is to be fixed to the electricity storage element group, wherein the insulating protector includes an accommodation frame inside of which the bus bar is disposed; and retaining portions that prevent the bus bar from coming off in the left-right direction inside the accommodation frame, and a tolerance absorbing clearance is provided between each of the retaining portions and the bus bar.

Abstract: Disclosed are a method of manufacturing an anode dual catalyst for a fuel cell so as to prevent a reverse voltage phenomenon and a dual catalyst manufactured by the same. The method may include supporting effectively metal catalyst particles and oxide particles on a conductive support, and thus, a dual catalyst manufactured using the method may be suitably used for controlling a reverse voltage phenomenon that occurs at the anode.

Abstract: The invention relates to a method for producing a supported catalyst material for a fuel-cell electrode, as well as a catalyst material that can be produced using said method. In the method, first, a carbide-forming substance is deposited from the gas phase onto the carbon-based carrier material to produce a carbide-containing layer and, then, a catalytically-active precious metal or an alloy thereof from the gas phase is deposited to form a catalytic layer. By chemical reaction of the carbide-forming substance with the carbon, very stable carbide bonds are formed at the interface, while an alloy phase of the two forms at the interface between carbide-forming substance and precious metal. Overall, a very stable adhesion of the catalytic precious metal to the substrate results, whereby degradation effects are reduced, and the life of the material is extended.

Abstract: An electrochemical cell is provided which includes a cathode, an anode, an electrolyte separator, and an anode current collector located on the anode. The anode is a three-dimensional (3D) porous anode including ionically conducting electrolyte strands and pores which extend through the anode from the anode current collector to the electrolyte separator. The anode also includes electronically conducting networks extending on sidewall surfaces of the pores from the anode current collector to the electrolyte separator.

Abstract: A manufacturing apparatus 100 includes a protruding portion molding member disposition mechanism 90, a tension damper 70, as well as an acceleration device 80, a metal roller 30 and a rubber roller 40, and a cutting mechanism 50 which serve as a laminating mechanism. A separator web 20 and an electrode web 10 are joined having the protruding portion molding member 35 interposed therebetween while the separator web 20 is bent at the portion where the protruding portion molding member 35 has been disposed, to laminate the separator web 20 and the electrode web 10.