Tdk Corporation

Hideaki Seki

Mari Miyauchi

Shin Fujita

Atsushi Sano

Sanshiro Aman

Akinobu Nojima

Hirofumi Kakuta

Kazuma Akimoto

Takamasa Minami

Junpei Shitaba

Takashi Sasaki

Masahiro Tsuchiya

Hirofumi Nakano

Masahiro Yoshida

Nobuto Morigasaki

Makoto Maeda

Tomohiko Kato

Masaki Sobu

Kosuke Takano

Yasuyuki Kawanaka

Hiroyuki Miyabara

Hiroshi Sasagawa

Tomoshi Nakamoto

Tetsu Syoji

A non-aqueous electrolytic liquid secondary battery wherein a potential of a metal layer in an exterior body is kept high, and corrosion can be suppressed, wherein an average thickness tof a first part of an exterior body covering a first side surface where a negative and a positive electrode terminal of a power generation element exist is different from an average thickness tof a second part of the exterior body covering a second side surface that intersects the first. In plan view of the power generation element from a lamination direction, in a second direction orthogonal to a first direction in which the electrode terminals extend, the relationship of t&#x3c;tis satisfied when a width of the negative electrode is larger than the positive, and in the second direction, the relationship of t&#x3e;tis satisfied when the width of the negative electrode is smaller than the positive.

Non-aqueous electrolytic liquid secondary battery

A non-aqueous electrolyte secondary battery in which a potential of a metal layer in an exterior body is kept noble, and corrosion can be suppressed, including: a power generation element wherein a positive electrode and a negative electrode are opposed to each other with a separator interposed therebetween, and the negative electrode is disposed on an outer side than the positive electrode; and an exterior body which covers the power generation element, and has a metal layer and a resin layer which covers both surfaces of the metal layer, and an average thickness tof a first part of the exterior body which covers upper and lower surfaces of the power generation element in a lamination direction of the power generation element and an average thickness tof a second part of the exterior body which covers side surfaces of the power generation element satisfy a relationship of t/t&#x3c;0.995.

Non-aqueous electrolyte secondary battery

A negative electrode for a lithium ion secondary battery includes a current collector and an active material-containing layer disposed on the current collector. The active material-containing layer includes: a first negative electrode active material including a carbon material; a second negative electrode active material including a metal element or a metalloid element as a constituent element, the metal element or the metalloid element being capable of forming an alloy with lithium; and a binder. The first negative electrode active material contains a spherical graphite, and the binder contains an acrylic resin.

Negative electrode for lithium ion secondary battery, and lithium ion secondary battery using the same

A positive electrode active material includes: a lithium complex oxide expressed by chemical formula (1); a highly thermal conductive compound; and graphene or multilayer graphene.Li12O&#x2003;&#x2003;(1)In the formula (1), M1 is at least one metal selected from Ni, Co, and Mn, M2 is at least one metal selected from the group consisting of Al, Fe, Ti, Cr, Mg, Cu, Ga, Zn, Sn, B, V, Ca, and Sr, and x and y are numbers such that 0.05&#x2264;x&#x2264;1.2 and 0.3&#x2264;y&#x2264;1.

Positive electrode active material, positive electrode, and lithium ion secondary battery

In this non-aqueous electrolyte secondary battery, a positive terminal and a negative terminal extend in a first direction, protrude from a laminated cell stack, and are provided so that a center line is interposed therebetween, the center line passing through a midpoint of both ends of the laminated cell stack in a second direction orthogonal to the first direction and extending in the first direction when the laminated cell stack is seen in plan view, and a first terminal with higher heat dissipation efficiency among the positive terminal and the negative terminal is provided in a location closer to the center line than a location of a second terminal with lower heat dissipation efficiency among the positive terminal and the negative terminal.

A positive electrode active material for a lithium ion secondary battery is lithium vanadium phosphate represented by a following composition expression (1) and in which a peak intensity ((002)/(201)) of a (002) plane normalized with respect to a peak intensity of a (201) plane and a peak intensity ((102)/(201)) of a (102) plane normalized with respect to a peak intensity of the (201) plane in an X-ray diffraction pattern satisfy 0.35&#x2264;(002)/(201)&#x2264;0.53 and 0.46&#x2264;(102)/(201)&#x2264;0.63, respectively, LiVOPO. . . (1).

Positive electrode active material for lithium ion secondary battery, positive electrode for lithium ion secondary battery, and lithium ion secondary battery using the same

A positive electrode includes: a positive electrode current collector; and a positive electrode active material layer disposed on the positive electrode current collector. The positive electrode active material layer contains a lithium-containing transition metal oxide represented by composition formula (1) indicated below, and a compound represented by LiVOPO4. The lithium-containing transition metal oxide and the compound represented by LiVOPO4 are dispersed in the positive electrode active material layer.LiNiCoAlO2&#x2003;&#x2003;(1)where 0.9&#x2264;t&#x2264;1.1, 0.3&#x3c;x&#x3c;0.99, 0.01&#x3c;y&#x3c;0.4, 0.001&#x3c;z&#x3c;0.2, and x+y+z=1.

Positive electrode and lithium ion secondary battery

A positive electrode active material for lithium ion secondary battery includes: active material particles including one or more compounds including Li and a transition metal; and a coating layer coating at least a part of a surface of the active material particles. The coating layer includes at least one of graphene or multilayer graphene The coating layer has a Raman spectrum with a G band (a peak of 1530 cmto 1630 cm), a D band (a peak of 1300 cmto 1400 cm), and a 2D band (a peak of 2650 cmto 2750 cm). At least the intensity of the 2D band normalized by the intensity of the G band (2D/G) satisfies 0.05&#x2264;2D/G.

Positive electrode active material including lithium transition metal particles with graphene coating layer positive electrode and lithium ion secondary battery including the same

A positive electrode active material for a lithium ion secondary battery contains: a first compound represented by chemical formula Li(NiMa)O(0.95&#x2264;x&#x2264;1.05, 0.70&#x2264;y&#x2264;0.95, where Ma is at least one element selected from Co, Mn, V, Ti, Fe, Zr, Nb, Mo, Al, and W); and a second compound represented by chemical formula LiVOPO. W&#x3e;5.0&#xb0; C., where W is a full width at half maximum of an exothermic peak obtained between 150&#xb0; C. and 260&#xb0; C. by differential scanning calorimetry (DSC) performed on a mixture of the first compound and the second compound under a condition of 5&#xb0; C./min.

Positive electrode active material for lithium ion secondary battery, and lithium ion secondary battery positive electrode and lithium ion secondary battery using the same

A positive electrode active material contains a compound represented by a chemical formula LiVOPO. A crystal system of the compound is an orthorhombic system, and the amount of tetravalent V of the compound is 27.7 mass % or more and 28.2 mass % or less.

Positive electrode active material and lithium-ion secondary battery

To provide an active material having high capacity and excellent cycle characteristics. An active material has a layered crystal structure and is expressed by a compositional formula (1) LiNiCoMnMO(1), where the element M is at least one kind of element selected from the group consisting of Al, Si, Zr, Ti, Fe, Mg, Nb, Ba, and V; 1.9&#x2266;(a+b+c+d+y)&#x2266;2.1; 1.05&#x2266;y&#x2266;1.35; 0&#x3c;a&#x2266;0.3; 0&#x3c;b&#x2266;0.25; 0.3&#x2266;c&#x2266;0.7; 0&#x2266;d&#x2266;0.1; and 1.9&#x2266;x&#x2266;2.1, and wherein 0.69&#x2266;Ni/Ni&#x2266;0.85, where Niis the Ni composition amount at a center portion of the active material primary particle, and Niis the Ni composition amount in the vicinity of a surface (in a width of 30 nm from the surface).

Active material for lithium ion secondary battery, and lithium ion secondary battery

A dielectric ceramic composition comprises, a main component including barium titanate, a first subcomponent including MgO, a second subcomponent including sintering aids of SiOcompound, a third subcomponent including at least one of VO, NbOand WO, a fourth A subcomponent including Roxide (note that, Ris at least one selected from Tb, Gd and Dy), a fourth B subcomponent including Roxide (note that, Ris at least one selected from Ho, Y and Yb), and a fifth subcomponent including MnO or CrO.

Dielectric ceramic composition and an electronic component

A dielectric ceramic composition of the present invention comprises; BaTiO(note that, m is 0.99&#x2266;m&#x2266;1.01), and BaZrO(note that, n is 0.99&#x2266;n&#x2266;1.01); wherein said dielectric ceramic composition consists of plurality of dielectric particles and a grain boundary phase existing between said dielectric particles adjacent to each other, when said dielectric particle having BaTiOas a main component is set to a first dielectric particle, said dielectric particle having BaZrOas a main component is set to a second dielectric particle, an average crystal diameter of said first dielectric particle is set to D(&#x3bc;m), and an average crystal diameter of said second dielectric particle is set to D(&#x3bc;m), then a ratio (D/D) of said Dwith respect to said Dis 0.04 to 0.33, said Dis 0.02 to 0.25 &#x3bc;m, and in said dielectric ceramic composition a ratio of the total number of said second dielectric particle with respect to the total number of said first dielectric particle is 0.10 to 2. The present invention is to provide the dielectric ceramic composition suitable for the medium-high voltage application used at a high rated voltage (for example, 100V or more).

Dielectric ceramic composition and electric device

The present invention relates to a dielectric ceramic composition comprising BaTiO, BaZrO, and the oxide of R wherein, when A is the content of BaZrO, and C is the content of the oxide R, with respect to 100 moles of BaTiO, then A is 40&#x2266;A&#x2266;65 moles and C is 4&#x2266;C&#x2266;15 moles; plus said dielectric composition satisfies the equation (1) and (2). The present invention can provide a dielectric ceramic composition good in IR lifetime, and capable to be suitably used for medium-high voltage which has a high rated voltage (for example, 100V or more).0.0038&#x2212;0.147&#x2266;&#x2266;0.004+0.04&#x2003;&#x2003;Equation (1)(note that, B is a ratio of the X-ray diffraction maximum intensity among peaks of said BaZrOwith respect to the X-ray diffraction maximum intensity among peaks of said BaTiO).0.0041&#x2212;0.0115&#x2266;&#x2266;0.0046+0.084&#x2003;&#x2003;Equation (2)(note that, D is a ratio of the X-ray diffraction maximum intensity among peaks of the oxide of said R with respect to the X-ray diffraction maximum intensity among peaks of said BaTiO).

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Tokyo, Japan

Hideaki Seki