Abstract: A solid oxide fuel cell comprises a solid electrolyte layer, a barrier layer, and a cathode. The cathode includes a cathode current collecting layer and a cathode active layer. The cathode active layer includes a plurality of micro-cracks in a surface region within a predetermined distance from the interface between the barrier layer and the cathode active layer.

Abstract: A fuel cell system for generating power by supplying anode gas and cathode gas to a fuel cell, comprising a compressor for supplying the cathode gas to the fuel cell, a pulsating operation unit causing a pressure of the anode gas to pulsate based on an operation state of the fuel cell system, a first target pressure setting unit setting a first target pressure of the cathode gas based on a request of the fuel cell, a second target pressure setting unit setting a second target pressure of the cathode gas for keeping a differential pressure in the fuel cell to be within a permissible differential pressure range according to the pressure of the anode gas in the fuel cell, and a compressor control unit controlling the compressor based on the first target pressure and the second target pressure. The second target pressure setting unit sets the second target pressure based on an upper limit target pressure in pulsation on the pulsation of the pressure of the anode gas.

Abstract: A nonaqueous electrolytic solution which may suppress the overcharge of a battery and a nonaqueous electrolyte secondary battery using the solution are provided. The overcharge of the battery is suppressed by undergoing the electrolytic polymerization in the solution when the battery is overcharged, and simultaneously more effectively suppressed by increasing the internal resistance of the battery. The nonaqueous electrolytic solution comprises a polymer which undergoes the electrolytic polymerization in the range of 4.3V or more to 5.5V or less at the lithium metal standard voltage, having a repeating unit represented by the formula (1), an electrolytic salt and a nonaqueous solvent. [where, A is a functional group which undergoes the electrolytic polymerization in the range of 4.3V or more to 5.

Abstract: The present invention provides a pressing-type cylindrical metal air battery which comprises: an external case which is formed in a cylindrical shape, and has a cathode terminal on one side and an anode terminal hole on the other side; an internal case which is formed in a cylindrical shape and coaxially inserted into the inside of the external case, has an anode terminal that is inserted into or extracted from the inside or the outside of the anode terminal hole on one side, and has an air inflow hole on the surface of a wall so that air can flow into the air inflow hole; and an elastic sealing means which is formed on the one side of the internal case, enables the air to flow into the anode terminal hole by elastically pressurizing the anode terminal when a battery is inserted into a battery compartment, and seals the anode terminal hole by elastically restoring the anode terminal again if the battery is separated from the battery compartment.

Abstract: The invention provides in various embodiments methods and systems relating to controlling energy storage units in flowing electrolyte batteries.

Abstract: A nonaqueous electrolyte secondary battery includes a positive electrode (5), a negative electrode (6) and a porous insulation layer (7). The positive electrode (5) includes a positive electrode current collector (51) and a positive electrode mixture layer (52), and the negative electrode (6) includes a negative electrode current collector (61) and a negative electrode active material layer (62). After charging the nonaqueous electrolyte secondary battery, when a surface of the positive electrode mixture layer (52) and a surface of the negative electrode active material layer (62) are brought in contact with each other, terminals are provided, respectively, on the positive electrode current collector (51) and the negative electrode current collector (62) and a resistance value between the terminals is measured, the resistance value is 1.6 ?·cm2 or more.

Abstract: A lithium primary battery 10 includes an electrode group in which a positive electrode 1 having iron disulfide as a positive electrode active material and a negative electrode 2 having lithium as a negative electrode active material are wound, with a separator 3 interposed between the positive electrode 1 and the negative electrode, wherein a density of the iron disulfide in a positive electrode mixture containing the positive electrode active material is in a range of 2.2-2.9 g/cm3, and the separator 3 is made of a non-woven fabric whose tensile strength is in a range of 6-30 N/mm2.

Abstract: An interconnect for a fuel cell is made of pressed metal sheet. The interconnect integrates inlets and outlets, flow distributing inlet and outlet-zones seal surfaces and flow paths on both sides of the interconnect all formed and defined by discrete point or oblong protrusions made by the deformation of the sheet. A protrusion on one side of the interconnect corresponds to an indentation on the other side, but since the interconnect consists of three levels, the first side of the interconnect can be designed substantially independently of the second side.