Tdk Corporation

Keiko Takeuchi

Sanshiro Aman

Hiroki Akiba

Tetsuya Ueno

Gakuho Isomichi

Hiroshi Sato

Hisashi Suzuki

Tomohiro Yano

Masahiro Oishi

Taisuke Masuko

Tomoko Nakamura

A solid electrolyte layer having a solid electrolyte and carbon, in which a dispersion degree (CV value) of the carbon measured by a quadrat method in a cross section of the solid electrolyte layer is more than zero and less than one.

Solid electrolyte layer and all-solid-state battery using same

An all-solid-state battery includes a positive electrode current collector layer; a positive electrode active material layer; a negative electrode current collector layer; a negative electrode active material layer; a solid electrolyte layer disposed between the positive electrode active material layer and the negative electrode active material layer and formed of a solid electrolyte; and at least one of a first intermediate layer formed between the positive electrode current collector layer and the positive electrode active material layer, and a second intermediate layer formed between the negative electrode current collector layer and the negative electrode active material layer.

All-solid-state battery

An all-solid-state secondary battery includes: a positive electrode active material layer; a negative electrode active material layer; and a solid electrolyte layer located between the positive electrode active material layer and the negative electrode active material layer, wherein at least one of the positive electrode active material layer and the negative electrode active material layer contains lithium vanadium phosphate, the solid electrolyte layer contains lithium zirconium phosphate, and between the positive electrode active material layer or the negative electrode active material layer containing lithium vanadium phosphate and the solid electrolyte layer, a first intermediate layer, which contains lithium vanadium phosphate containing zirconium and is located on the side of the positive electrode active material layer or the negative electrode active material layer, and a second intermediate layer, which contains lithium zirconium phosphate containing vanadium and is located on the side of the solid electrolyte layer, are provided.

All-solid-state secondary battery

A lithium ion-conducting solid electrolyte containing at least one metallic element selected from the group made of Zn, Ca, Mg, and Cu within a range of 0.01% by mass to 3.0% by mass, and a solid-state lithium ion rechargeable battery containing this lithium ion-conducting solid electrolyte.

Lithium ion-conducting solid electrolyte and solid-state lithium ion rechargeable battery

A dielectric composition with high voltage resistance and favorable reliability, and an electronic component using the dielectric composition. The dielectric composition contains, as a main component, a tungsten bronze type composite oxide represented by a chemical formula (SrBaCa)R(TiZr)(NbTa)Oin which the R is at least one element selected from Y, La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu, and s, t, x, a, and b satisfy 0.50&#x2264;s&#x2264;1.00, 0&#x2264;t&#x2264;0.50, 0.50&#x2264;s+t&#x2264;1.00, 0.50&#x3c;x&#x2264;1.50, 0.30&#x2264;a&#x2264;1.00, and 0&#x2264;b&#x2264;1.00. At least one or more elements selected from Mn, Mg, Co, V, W, Mo, Si, Li, B, and Al are contained as a sub component in 0.10 mol or more and 20.00 mol or less with respect to 100 mol of the main component.

Dielectric composition, dielectric element, electronic component, and multilayer electronic component

[Object] provide a dielectric composition with high voltage resistance and favorable reliability, and an electronic component using the dielectric composition. [Solving Means] A dielectric composition contains, as a main component, a tungsten bronze type composite oxide represented by a chemical formula (SrBaCa)R(TiZr)(NbTa)O, in which the R is at least one element selected from Y, La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu, and s, t, x, a, and b satisfy 0.70&#x2264;s&#x2264;1.00, 0&#x2264;t&#x2264;0.30, 0.70&#x2264;s+t&#x2264;1.00, 0&#x2264;x&#x2264;0.50, 0.10&#x2264;a&#x2264;1.00, and 0&#x2264;h&#x2264;1.00. At least one or more elements selected from Mn, Mg, Co, V, W, Mo, Si, Li, B, and Al are contained as a sub component in 0.10 mol or more and 20.00 mol or less with respect to 100 mol of the main component.

A dielectric composition with high voltage resistance and favorable reliability, and an electronic component using the dielectric composition. The dielectric composition contains, as a main component, a tungsten bronze type composite oxide represented by a chemical formula (SrBaCa)R(TiZr)(NbTa)O, in which the R is at least one element selected from Y, La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu, and s, t, x, a, and b satisfy 0.50&#x2264;s&#x2264;1.00, 0&#x2264;t&#x2264;0.30, 0.50&#x2264;s+t&#x2264;1.00, 1.50&#x3c;x&#x2264;3.00, 0.20&#x2264;a&#x2264;1.00, and 0&#x2264;b&#x2264;1.00. At least one selected from Mn, Mg, Co, V, W, Mo, Si, Li, B, and Al is contained as a sub component in 0.10 mol or more and 20.00 mol or less with respect to 100 mol of the main component.

A dielectric composition with high voltage resistance and favorable reliability, and an electronic component using the composition, the composition containing a tungsten bronze type composite oxide represented by chemical formula (SrBaCa)R(TiZrSi)(NbTa)O, wherein R is at least one element selected from Y, La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu, and s, t, x, a, b, and d satisfy 0&#x2264;s&#x2264;1.00, 0&#x2264;t&#x2264;1.00, 0&#x2264;s+t&#x2264;1.00, 0&#x2264;x&#x2264;3.00, 0.01&#x2264;a&#x2264;0.98, 0&#x2264;b&#x2264;1.00, 0.02&#x2264;d&#x2264;0.15, and 0.03&#x2264;a+d&#x2264;1.00. At least one element selected from Mn, Mg, Co, V, W, Mo, Li, B, and Al are contained as a sub component in 0.10 mol or more and 20.00 mol or less with respect to 100 mol of the main component.

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Tokyo, Japan

Keiko Takeuchi