Abstract: A magnetic sensor 10 includes: a non-magnetic substrate 11; a sensitive circuit 12 provided on a surface of the substrate 11 and including a sensitive part 121 sensing a magnetic field by a magnetic impedance effect; a terminal part 13a and a terminal part 13b connected to respective both end portions of the sensitive circuit 12; and a conductive returning member with one end portion being connected to the terminal part 13a, the returning member returning back toward the terminal part 13b.

Abstract: In a magnetic sensor using sensitive circuits sensing magnetic fields by the magnetic impedance effect, a sensitivity-to-noise ratio is improved. A magnetic sensor 10 includes: a sensitive circuit 12A including sensitive parts sensing magnetic fields by magnetic impedance effect; and a sensitive circuit 12B including sensitive parts sensing magnetic fields by magnetic impedance effect, wherein at least a part of current paths of the sensitive circuit 12A and at least a part of current paths of the sensitive circuit 12B overlap in a plan view, and one end portion of the sensitive circuit 12A and one end portion of the sensitive circuit 12B are electrically connected.

Abstract: A magnetic sensor 10 includes: a non-magnetic substrate 11; a sensitive circuit 12 provided on a surface of the substrate 11 and including a sensitive part 121 sensing a magnetic field by a magnetic impedance effect; a terminal part 13a and a terminal part 13b connected to respective both end portions of the sensitive circuit 12; and a conductive returning member with one end portion being connected to the terminal part 13a, the returning member returning back toward the terminal part 13b.

Abstract: A lithium-ion rechargeable battery (1) provided with: a battery unit (100) including a metal substrate (10) and a battery part (20) configured by laminating thin films on the substrate (10); and a shell (200) provided on the surface of the substrate (10), on which the battery part (20) is formed, to seal the substrate (10) and the battery unit (100). The shell (200) includes a laminated film (30) formed by laminating a metal layer (33) and various types of resin layers. Consequently, the thickness of the thin-film type lithium-ion rechargeable battery including a solid electrolyte is reduced.

Abstract: The invention provides a method of producing a cathode active material for a lithium secondary battery, whereby it is possible to configure a lithium secondary battery in which the discharge capacity is improved and elution of lithium ions from the lithium metal phosphate is suppressed when washing the lithium metal phosphate after the same was synthesized. The method of producing a cathode active material for a lithium secondary battery includes synthesizing a lithium metal phosphate represented by a composition formula LiMPO4, wherein the element M represents one or two or more of transition metals selected from among Fe, Mn, Co and Ni, and after the synthesis, washing the lithium metal phosphate with a washing liquid containing lithium ion.

Abstract: Provided is a method for producing a lithium metal phosphate, and the method comprises initiating and allowing to proceed, in the presence of a polar solvent, a conversion reaction of a lithium ion (Li+) source such as lithium hydroxide, a divalent transition metal ion (M2+) source such as a divalent transition metal sulfate, and a phosphate ion (PO43?) source such as phosphoric acid into a lithium metal phosphate at 150° C. or higher. The conversion reaction is initiated and allowed to proceed by bringing solution A containing one of a lithium ion, a divalent transition metal ion, and a phosphate ion into contact with solution B containing the others of these ions at 150° C. or higher, or by adjusting the pH of solution C that has a pH of lower than 4 and contains a lithium ion, a divalent transition metal ion, and a phosphate ion to 4 or higher.

Abstract: A cathode material for a lithium secondary battery, including fibrous carbon and a plurality of cathode active material particles bonded to a surface of the fibrous carbon. The cathode active material particles are composed of olivine-type LiMPO4 where M represents one or more kinds of elements selected from Fe, Mn, Ni, and Co. Also disclosed is a method of producing the cathode material and a lithium secondary battery.

Abstract: A method is employed for producing a positive electrode active material for a lithium secondary battery that comprises mixing lithium phosphate having a particle diameter D90 of 100 ?m or less, an M element-containing compound having a particle diameter D90 of 100 ?m or less (where, M is one type or two or more types of elements selected from the group consisting of Mg, Ca, Fe, Mn, Ni, Co, Zn, Ge, Cu, Cr, Ti, Sr, Ba, Sc, Y, Al, Ga, In, Si, B and rare earth elements) and water, adjusting the concentration of the M element with respect to water to 4 moles/L or more to obtain a raw material, and producing olivine-type LiMPO4 by carrying out hydrothermal synthesis using the raw material.

Abstract: A method is employed for producing a positive electrode active material for a lithium secondary battery that comprises mixing lithium phosphate having a particle diameter D90 of 100 ?m or less, an M element-containing compound having a particle diameter D90 of 100 ?m or less (where, M is one type or two or more types of elements selected from the group consisting of Mg, Ca, Fe, Mn, Ni, Co, Zn, Ge, Cu, Cr, Ti, Sr, Ba, Sc, Y, Al, Ga, In, Si, B and rare earth elements) and water, adjusting the concentration of the M element with respect to water to 4 moles/L or more to obtain a raw material, and producing olivine-type LiMPO4 by carrying out hydrothermal synthesis using the raw material.

Abstract: A positive electrode active material for a lithium secondary battery having a core portion and a shell layer is employed in which the core portion is represented by Lix1M1y1Pz1O4 (where, M1 represents an element such as Mg, Ca, Fe or Mn, and the letters x1, y1 and z1 representing composition ratios are respectively such that 0<x1<2, 0<y1<1.5 and 0.9<z1<1.1), the shell layer is composed of one or more layers represented by Lix2M2y2Pz2O4 (where, M2 represents one type or two or more types of elements selected from the group consisting of Mg, Fe, Ni, Co and Al, and the letters x2, y2 and z2 representing composition ratios are respectively such that 0<x2<2, 0<y2<1.5 and 0.9<z2<1.1).

Abstract: A cathode material for a lithium secondary battery, including fibrous carbon and a plurality of cathode active material particles bonded to a surface of the fibrous carbon. The cathode active material particles are composed of olivine-type LiMPO4 where M represents one or more kinds of elements selected from Fe, Mn, Ni, and Co. Also disclosed is a method of producing the cathode material and a lithium secondary battery.

Abstract: The invention provides a method of producing a cathode active material for a lithium secondary battery, whereby it is possible to configure a lithium secondary battery in which the discharge capacity is improved and elution of lithium ions from the lithium metal phosphate is suppressed when washing the lithium metal phosphate after the same was synthesized. The method of producing a cathode active material for a lithium secondary battery includes synthesizing a lithium metal phosphate represented by a composition formula LiMPO4, wherein the element M represents one or two or more of transition metals selected from among Fe, Mn, Co and Ni, and after the synthesis, washing the lithium metal phosphate with a washing liquid containing lithium ion.

Abstract: Provided is a method for producing a lithium metal phosphate, and the method comprises initiating and allowing to proceed, in the presence of a polar solvent, a conversion reaction of a lithium ion (Li+) source such as lithium hydroxide, a divalent transition metal ion (M2+) source such as a divalent transition metal sulfate, and a phosphate ion (PO43?) source such as phosphoric acid into a lithium metal phosphate at 150° C. or higher. The conversion reaction is initiated and allowed to proceed by bringing solution A containing one of a lithium ion, a divalent transition metal ion, and a phosphate ion into contact with solution B containing the others of these ions at 150° C. or higher, or by adjusting the pH of solution C that has a pH of lower than 4 and contains a lithium ion, a divalent transition metal ion, and a phosphate ion to 4 or higher.

Abstract: An element for a solid electrolytic capacitor having low equivalent series resistance (ESR) and high capacitance per unit volume obtained by controlling the composition or the thickness of the silver paste forming a laminated structure on the anode substrate having a carbon paste layer on the surface. Using two kinds of silver pastes each having different wettability on the carbon paste layer and applying each silver paste on the side (edge) portions and face portions of an anode substrate, respectively, a desired layer thickness can be obtained as a whole. A solid electrolytic capacitor element preferably has a silver paste layer coating the side (edge) portions of the anode substrate which is thicker than the silver paste layer covering the face portions of the anode substrate, wherein a silver paste of composition having a water amount of 0.5 mass % or less is preferably used.

Abstract: The invention provides a solid electrolytic capacitor element, comprising a metal oxide layer, an electroconductive polymer layer, a carbon paste layer and a silver paste layer sequentially formed on surface of a valve-acting metal material, wherein thickness of the silver paste layer is within a range of 5 to 20 ?m and the mass ratio of silver contained in the silver paste layer is within a range of 84 to 94%. According to the invention, a solid electrolytic capacitor having good electric properties such as ESR (equivalent series resistance) and LC (leakage current) and good reliability can be produced.

Abstract: The invention provides a solid electrolytic capacitor element, comprising a metal oxide layer, an electroconductive polymer layer, a carbon paste layer and a silver paste layer sequentially formed on surface of a valve-acting metal material, wherein thickness of the silver paste layer is within a range of 5 to 20 ?m and the mass ratio of silver contained in the silver paste layer is within a range of 84 to 94%. According to the invention, a solid electrolytic capacitor having good electric properties such as ESR (equivalent series resistance) and LC (leakage current) and good reliability can be produced.

Abstract: An element for a solid electrolytic capacitor having low equivalent series resistance (ESR) and high capacitance per unit volume obtained by controlling the composition or the thickness of the silver paste forming a laminated structure on the anode substrate having a carbon paste layer on the surface. Using two kinds of silver pastes each having different wettability on the carbon paste layer and applying each silver paste on the side (edge) portions and face portions of an anode substrate, respectively, a desired layer thickness can be obtained as a whole. A solid electrolytic capacitor element preferably has a silver paste layer coating the side (edge) portions of the anode substrate which is thicker than the silver paste layer covering the face portions of the anode substrate, wherein a silver paste of composition having a water amount of 0.5 mass % or less is preferably used.

Abstract: A tantalum sintered body comprising a pore size distribution having a plurality of peaks wherein out of a plurality of peaks, two peaks having a largest relative intensity and a second largest relative intensity have a pore diameter of 0.2 to 0.7 ?m and a pore diameter of 0.7 to 3 ?m, having a volume of pore 10 mm3 or more including the volume of pore voids and a specific area of 0.2 to 7 m2/g, and having a CV value of 40,000 to 200,000 ?FV/g when sintered at 1,300° C., and a capacitor using the sintered body.

Abstract: 1. A niobium powder for capacitors, wherein the chromium content is 50 ppm by mass or less, granulated product and sintered body thereof, and producing method of those; 2. a capacitor constructed by one part electrode formed of the niobium sintered body, another part electrode and a dielectric material interposed between two electrodes, and its producing method; and 3. an electronic circuit and electronic device using the capacitor. A capacitor having good voltage resistance properties can be manufactured by using the niobium sintered body for capacitors of the present invention, wherein the chromium content is 50 ppm by mass or less.

Abstract: The present invention relates to a method for producing a niobium-oxide solid electrolytic capacitor having an anode being at least one member selected from niobium monoxide, niobium and an alloy mainly comprising niobium, or a mixture of niobium monoxide with niobium or an alloy mainly comprising niobium, which capacitor formed by the electrolytic oxidation (electrochemical formation) of the anode; and the method including sequentially repeating twice or more a step of exposing a dielectric layer to a temperature to 1,000° C. before formation of a cathode and a step of re-electrochemically forming the dielectric layer. The niobium solid electrolytic capacitor obtained by the present invention improved in the leakage current value after mounting and excellent in reliability.