Abstract: A rechargeable battery including an electrode assembly including a positive electrode and a negative electrode; a case including a space receiving the electrode assembly; a cap plate coupled with the case; and a terminal electrically connected to the electrode assembly, the terminal protruding outside of the cap plate, wherein a top of the cap plate has a slanted surface.

Abstract: Devices and methods are provided for generating electrical power using a capacitor. The capacitor has a catalytic working electrode, a dielectric, and a counter electrode. Power is generated by flowing a fuel (e.g., hydrogen gas) over the working electrode, charging the capacitor (e.g. by applying a voltage), flowing an oxidant (e.g., oxygen gas) over the working electrode, and connecting the electrodes to a resistive load, which allows current to flow through the load, between the electrodes. The inverse device (i.e., oxidant first, then fuel) functions similarly.

Abstract: According to one embodiment, a positive electrode includes a positive electrode material layer and a positive electrode current collector. The positive electrode material layer includes a positive electrode active material having a composition represented by a formula (1) described below. The positive electrode material layer satisfies a formula (2) described below. The positive electrode material layer is formed on the positive electrode current collector.

Abstract: The present invention provides a cylindrical secondary electrode including a first electrode plate, a second electrode plate, a separator interposed between the first electrode plate and the second electrode plate, and a case having a space for receiving the electrode assembly, wherein the cylindrical secondary electrode may include a core element having a space at the center thereof and having a tubular shape with a circular cross section, which is inserted into a space at the center of an electrode assembly and has at least one slit including a bent portion.

Abstract: An apparatus for placing a fuel cell stack in a standby mode is provided. The apparatus comprises a compressor, a fuel cell stack, a cathode valve and a controller. The compressor is operably coupled to an air induction system for providing a cathode stream. The fuel cell stack provides electrical power to a load in response to the cathode stream. The cathode valve is operably coupled to an outlet of the fuel cell stack for controlling a flow of the cathode stream to the fuel cell stack. The controller is configured to receive a power request amount for the load and to compare the power request amount to a predetermined amount. The controller is further configured to control the compressor to operate at a minimum speed and the cathode valve to close in response to determining that the power request amount is similar to the predetermined amount.

Abstract: Provided is an electric storage that includes at least one electric storage device, a first external housing for housing the at least one electric storage device, and a second external housing for housing the first external housing, wherein the first external housing and the second external housing respectively include engaging portions, which are engaged with each other.

Abstract: A protected transition metal hexacyanoferrate (TMHCF) battery cathode is presented, made from AxMyFez(CN)n.mH2O particles, where the A cations are either alkali or alkaline-earth cations, and M is a transition metal. In one aspect the cathode passivation layer may be materials such as oxides, simple salts, carbonaceous materials, or polymers that form a film overlying the AxMyFez(CN)n.mH2O particles. In another aspect, the cathode passivation layer is a material such as oxygen, nitrogen, sulfur, fluorine, chlorine, or iodine that interacts with the AxMyFez(CN)n.mH2O particles, to cure defects in the AxMyFez(CN)n.mH2O crystal lattice structure. Also presented are TMHCF battery synthesis methods.

Abstract: An electrical connection assembly is provided to electrically connect with at least one electrical contact of an electronic apparatus. The electrical connection assembly includes an insulating casing, a circuit board and a resilient conductive element. An inner space is defined in the insulating casing, and at least one opening is defined on the insulating casing for communicating the inner space and the exterior of the insulating casing. The circuit board is disposed in the inner space of the insulating casing. The resilient conductive element includes a connecting side for fixing on and electrically connecting with the circuit board. The resilient conductive element further includes a compressible side for facing the opening and being exposed therethrough. The thickness of the resilient conductive element is reduced when an external force is applied thereon and recovers when the external force is removed.

Abstract: A membrane electrode assembly (MEA) with enhanced current density or power density is fabricated using high temperature (HT) proton exchange membrane (PEM). The MEA can be utilized in high temperature PEM fuel cell applications. More specifically, the MEA is modified with the addition of one or more of selected materials to its catalyst layer to enhance the rates of the fuel cell reactions and thus attain dramatic increases of the power output of the MEA in the fuel cell. The MEA has application to other electro-chemical devices, including an electrolyzer, a compressor, or a generator, purifier, and concentrator of hydrogen and oxygen using HT PEM MEAs.

Abstract: A secondary battery having high capacity and satisfactory high-temperature cycle characteristics is provided. A secondary battery according to the exemplary embodiment has an electrode element in which a positive electrode and a negative electrode are arranged so as to face each other, an electrolytic solution and an outer package packaging the electrode element and the electrolytic solution, wherein the negative electrode is formed by binding a negative electrode active material containing at least one of a metal (a) capable of forming an alloy with lithium and a metal oxide (b) capable of absorbing and releasing lithium ions, to a negative electrode collector, with a polyimide or a polyamide-imide serving as a negative electrode binder; and the electrolytic solution contains a phosphazene compound.

Abstract: The present invention provides an electrode for a secondary battery, more specifically an electrode for a secondary battery, comprising a current collector; an electrode active material layer formed on at least one surface or the whole outer surface of the current collector; a graphite-based coating layer formed on the top surface of the electrode active material layer and comprising graphite, a conductive material and a first polymer binder; and a porous coating layer formed on the top surface of the graphite-based coating layer and comprising a second polymer binder. Also, the present invention provides a secondary battery and a cable-type secondary battery comprising the electrode.

Abstract: A hybrid energy storage system (ESS) includes a first energy storage device including a battery having an impedance for providing a substantially constant power output, and a second energy storage device linked to the first energy storage and including a high power electrochemical double layer capacitor (EDLC) for providing intermittent bursts of high voltage output in a range of 1.5 to 3.0 volts, wherein an operation rating of the second energy source is within a temperature range between 75 degrees Celsius and 330 degrees Celsius while exhibiting a leakage current less than 1 amp per liter of volume over the range of operating temperatures and at a voltage up to a rated voltage.

Abstract: A battery pack includes a plurality of battery modules including at least a first group of the battery modules and a second group of the battery modules, a first coolant flow pathway through the battery modules of the first group and the second group, a second coolant flow pathway along an exterior of the battery modules of the first group, and a converging coolant flow pathway connected with the first coolant flow pathway, the converging coolant flow pathway being disposed downstream of the first group of the battery modules, the converging coolant flow pathway joining the second coolant flow pathway with the first coolant flow pathway.

Abstract: Presented herein is a rechargeable lithium battery that includes a cathode, a liquid electrolyte, a solid electrolyte, and an anode. The anode is at least partially coated or plated with the solid electrolyte. The cathode may be porous and infiltrated by the liquid electrolyte. The cathode may also include a binder having a solid graft copolymer electrolyte (GCE). In certain embodiments, the liquid electrolyte is a gel that includes a PIL and a GCE. The battery achieves a high energy density and operates safely over a wide range of temperatures.

Abstract: A thermally managed Li-ion battery assembly including an anode and a cathode, wherein at least one of the anode and the cathode includes a thermocrystal metamaterial structure.

Abstract: A fuel cell includes a membrane electrode assembly having an anode side and a cathode side, a first gas diffusion layer adjacent the cathode side of the membrane electrode assembly, and a first flow field plate contacting the first gas diffusion layer. The first flow field plate includes a reactant inlet, a reactant outlet, and a plurality of flow field chambers separated from one another by at least one rib. The reactant inlet is separated from the plurality of flow field chambers by at least one rib and the reactant outlet is separated from the plurality of flow field chambers by at least one rib. The ribs are configured to force a reactant flowing from the reactant inlet to the reactant outlet to enter the first gas diffusion layer at least twice.

Abstract: A rechargeable battery, including an electrode assembly having a first electrode plate, a second electrode plate, and a separator, a first terminal electrically connected to the first electrode plate, a case accommodating the electrode assembly and the first terminal, and a cap assembly sealing the case. The first terminal includes a first collector plate in the case electrically connected to the first electrode plate of the electrode assembly, a first electrode terminal exposed to a top surface of the cap assembly, the first electrode terminal having a first terminal hole passing through a top and bottom surface of the first electrode terminal, and a first connection terminal having a first side electrically connected to the first electrode terminal and a second side electrically connected to the first collector plate, the first connection terminal having a first fuse hole at the first side.

Abstract: Disclosed is a rechargeable battery that can improve sealing performance of a gasket and prevent a cap assembly from rotating with respect to a case. The rechargeable battery includes an electrode assembly that includes an anode, a cathode, and a separator interposed between the anode and the cathode, a case that accommodates the electrode assembly, a cap assembly that is coupled with the case to close and seal the case and that has an electrode terminal, and a gasket that is provided between the cap assembly and the case. A protrusion is formed at a surface of the gasket. A ratio of a height of the protrusion to a half-width of the protrusion is about 0.5 to 0.8.

Abstract: A decomposition reaction of an electrolyte solution and the like caused as a side reaction of charge and discharge is minimized in repeated charge and discharge of a lithium ion battery or a lithium ion capacitor, and thus the lithium ion battery or the lithium ion capacitor can have long-term cycle performance. A negative electrode for a power storage device includes a negative electrode current collector and a negative electrode active material layer which includes a plurality of particles of a negative electrode active material. Each of the particles of the negative electrode active material has an inorganic compound film containing a first inorganic compound on part of its surface. The negative electrode active material layer has a film in contact with an exposed part of the negative electrode active material and part of the inorganic compound film. The film contains an organic compound and a second inorganic compound.

Abstract: A cell in which thermal welding of a laminate packaging is performed so that the thickness of a thermal welded portion including an electrode terminal is larger than that of a thermal welded portion including no electrode terminal.