Abstract: A process for recycling an electrode material comprising graphene and an electrochemically active material is described. The process comprises a step of adding, in any order, water and a non-miscible solvent to the electrode material, thereby forming a biphasic system comprising an organic phase and an aqueous phase; and a step of separating and filtering the organic phase to recover graphene. The process optionally comprises additional steps of washing, drying, and/or thermally treating. Also described are electrodes including the recycled graphene, as well as the electrochemical cells and their uses.

Abstract: A control unit comprised in a fuel cell system is configured to perform prediction of whether a required output for a motor generator has a positive value and determination of whether a voltage of a fuel cell is less than a target voltage during execution of an auxiliary machine power consumption, and is configured to set a bypass valve to a first degree of opening during execution of the auxiliary machine power consumption when a result of at least one of the prediction and the determination is negative, and is configured to set the bypass valve to a second degree of opening less than the first degree of opening during execution of the auxiliary machine power consumption when results of both the prediction and the determination are positive.

Abstract: The present specification provides an electrolyte including a phthalate phosphine-type anion, an additive for a secondary battery including the electrolyte, and a secondary battery including the additive.

Abstract: The invention relates to a temperature-controlling device for a battery module, having a flow space (4) which has a multiplicity of spacer elements (11) and is essentially closed. The spacer elements (11) are arranged within the flow space (4) and the temperature-controlling device (3) further has a flow deflection unit (15) which is arranged within the flow space (4) and has a longitudinal direction (16) extending along the flow deflection unit (15) from a first end (24) to a second end (25) of said flow deflection unit (15). The flow deflection unit (15) forms a first side face (17) and a second side face (18) which sides are arranged in the longitudinal direction (16) on opposite sides of the flow deflection unit (15), and wherein at least portions of the first side face (17) and the second side face (18) are arranged directly adjacent to a spacer element (11, 111, 112).

Abstract: A rechargeable battery according to another exemplary embodiment of the present invention includes an electrode assembly including a first electrode including a first electrode plate, a plurality of first electrode uncoated regions protruded from the first electrode plate, a base member, and a coupled member formed at at least one lateral side of the base member, a separator overlapping the first electrode, and a second electrode including a second electrode plate overlapping the separator, a plurality of second electrode uncoated regions protruded from the second electrode plate, a base member, and a coupled member formed at at least one lateral side of the base member, wherein a ratio of a thickness (T2*2) of one of the coupled members to a thickness (T1) of one of the base members is between about 3 and about 6.

Abstract: A secondary battery is disclosed. In one aspect, the secondary battery includes an electrode assembly having a top space, a first main surface and a second main surface opposing each other. The secondary battery also includes an electrode tab extending outwardly from the top surface of the electrode assembly so as to channel heat away from the electrode assembly. The secondary battery further includes a fixing member formed adjacent to the electrode tab and covering at least the top surface of the electrode assembly so as to reduce a thermal deformation of the electrode assembly caused by the heat from the electrode tab.

Abstract: Disclosed is a battery module, which includes a cell assembly composed of a plurality of cells, and a frame assembly having a bottom plate supporting the cell assembly from a lower portion, a side plate perpendicular to the bottom plate and disposed adjacent to an outermost side of the cell assembly, and a top plate covering an upper portion of the cell assembly, wherein a groove forming an external air inflow space between the side plate and the cell assembly is formed at the side plate to elongate in a length direction thereof.

Abstract: An interconnector-electrochemical reaction unit cell composite body including an electrochemical reaction unit cell, and an interconnector which has a first through hole defining a fuel gas flow channel and which is disposed on the side toward an anode of the electrochemical reaction unit cell. The interconnector includes a coating forming a first surface of the interconnector opposite the anode. The coating includes a first coating and a second coating a having reduction resistance higher than that of the first coating. The first coating forms a first surface region which is a portion of the first surface of the interconnector and which is located away from the first through hole. The second coating forms a second surface region which is a portion of the first surface of the interconnector, which surrounds the first through hole, and which is located between the first coating and the first through hole.

Abstract: A fuel cell comprises a membrane electrode assembly configured such that electrode catalyst layers are formed on respective surfaces of an electrolyte membrane; gas diffusion layers placed on respective surfaces of the membrane electrode assembly; and a frame placed around periphery of the membrane electrode assembly. The membrane electrode assembly has a protruding portion that is configured by protruding outside of the gas diffusion layer in a state that the membrane electrode assembly is combined with the gas diffusion layers. The frame has an engagement portion that is configured to engage with the protruding portion. An adhesive layer is formed from an ultraviolet curable adhesive between the protruding portion and the engagement portion.

Abstract: A pouch-type rechargeable battery according to one or more exemplary embodiments includes: an electrode assembly; an exterior material receiving the electrode assembly; and a sealing portion arranged at an edge of the exterior material, and including at least one metal particle and a resin surrounding the at least one metal particle, and an area ratio of the at least one metal particle and the resin in a cross-section of the sealing portion cut along a direction that is perpendicular to a lengthwise direction of the sealing portion is from 1:99 to 6:4.

Abstract: A motor vehicle battery includes a battery housing. The battery housing has a housing interior bounded in sections by a housing frame and a housing base. The motor vehicle battery further includes a plurality of battery modules arranged in the housing interior. The motor vehicle battery further includes at least one first cooling duct. The at least one first cooling duct is formed in the region of the housing base, for cooling the battery modules from a first side. The housing interior is bounded by a housing cover or by a housing lid opposite the housing base. At least one second cooling duct for cooling the battery modules from a second side is formed in the region of the housing cover or of the housing lid.

Abstract: The present invention provides a composition for forming a positive electrode of a secondary battery which includes a positive electrode active material, a conductive material, and a dispersing agent, in which the conductive material includes a carbon-based material having a specific surface area of 130 m2/g or more and an oil absorption number of 220 ml/100 g or more at 0.1 wt % to 2 wt % with respect to the total weight of the composition for forming a positive electrode, and the dispersing agent is introduced into the conductive material to form a conductive material-dispersing agent composite, and the conductive material-dispersing agent composite has a particle size distribution D50 of 0.8 ?m to 1.2 ?m, a positive electrode for a secondary battery and a secondary battery, which are manufactured using the same.

Abstract: A cell monitor connector is inserted with a first surface following a guide portion. When the cell monitor connector is further inserted, the cell monitor connector makes contact with a projection portion. In a state where the attachment is completed, the projection portion is elastically deformed so as to press a second surface. Due to this force, the cell monitor connector is held such that it is sandwiched between the projection portion and the guide portion.

Abstract: A method of producing a pre-selenized (selenium-preloaded) active cathode layer for a rechargeable alkali metal-selenium cell; the method comprising: (a) preparing an integral layer of mesoporous structure having pore sizes from 0.5 nm to 50 nm (preferably from 0.5 nm to 5 nm) and a specific surface area from 100 to 3,200 m2/g; (b) preparing an electrolyte comprising a solvent and a selenium source; (c) preparing an anode; and (d) bringing the integral layer and the anode in ionic contact with the electrolyte and imposing an electric current between the anode and the integral layer (serving as a cathode) to electrochemically deposit nanoscaled selenium particles or coating on the graphene surfaces. The selenium particles or coating have a thickness or diameter smaller than 20 nm (preferably <10 nm, more preferably <5 nm or even <3 nm) and preferably occupy a weight fraction of at least 70% (preferably >90% or even >95%).

Abstract: The present invention relates to a monopropellant system for a regenerative fuel cell (RFC) and a method for mono-propulsion using same and, more specifically, to a monopropellant system for an RFC which can, when operating an electrically propelled airplane adopting an RFC system, secure more energy via a monopropellant than conventional methods and use same as a propulsion source for airplane takeoff and so on, and to a method for mono-propulsion using the monopropellant system for an RFC.

Abstract: In attaching a cover, the cover is attached to a placement jig such that positioning pins of the placement jig are respectively passed through a first bolt insertion portion and a second bolt insertion portion of the cover. In placing the cover, the cover is placed at a placement position on a first surface of a storage body such that the positioning pins of the placement jig to which the cover is attached are respectively inserted into a first fastening hole and a second fastening hole of the storage body.

Abstract: The present invention provides a composition for forming a positive electrode of a secondary battery which includes a positive electrode active material, a conductive material, and a dispersing agent, in which the conductive material includes a carbon-based material having a specific surface area of 130 m2/g or more and an oil absorption number of 220 ml/100 g or more at 0.1 wt % to 2 wt % with respect to the total weight of the composition for forming a positive electrode, and the dispersing agent is introduced into the conductive material to form a conductive material-dispersing agent composite, and the conductive material-dispersing agent composite has a particle size distribution D50 of 0.8 ?m to 1.2 ?m, a positive electrode for a secondary battery and a secondary battery, which are manufactured using the same.

Abstract: A battery includes a first electrode layer; and a second electrode layer disposed on the first electrode layer and serving as a counter electrode for the first electrode layer, wherein the first electrode layer includes a first current collector, a first active material layer, and a first solid electrolyte layer, the first active material layer is disposed to be in contact with the first current collector and to occupy a smaller area than the first current collector, the first solid electrolyte layer is disposed to be in contact with the first current collector and the first active material layer and to occupy the same area as the first current collector, the first active material layer faces the second electrode layer with the first solid electrolyte layer therebetween, and the first electrode layer includes a peripheral portion including a first rounded portion.

Abstract: A secondary battery includes an electrode assembly, a battery case configured to house the electrode assembly and an electrolyte, a lead terminal extending from a coupling section with the electrode assembly, through the battery case and protrudes outside the battery case, and an adhesive layer on the lead terminal having adhesion depending on a reaction of the adhesive layer to the electrolyte. The secondary battery has an improved structure so that an internal short circuit is prevented and stability of the secondary battery is improved.

Abstract: A fuel cell system includes a supply channel having first channels respectively connected with tanks, and a second channel merged with each of the first channels; first on-off valves of the first channels; a second on-off valve of the second channel; and a controller configured to control opening and closing of the first on-off valves and the second on-off valve. In a state where the second on-off valve is closed, the controller supplies first electric power used for opening the first on-off valve against a first differential pressure to at least one first on-off valve, and supplies second electric power, smaller than the first electric power and used for opening the first on-off valves against a second differential pressure smaller than the first differential pressure, to the first on-off valves other than the at least one first on-off valve.