Toyota Jidosha Kabushiki Kaisha

Cambridge Enterprise Limited

Toyota Jidosha Kabushiki Kabushiki Kaisha

Mayuko Osaki

Andrew Wheatley

Brian Johnson

Yuki Kato

Hirohito Hirata

Yohei Shindo

Masao Watanabe

Hiroyuki Matsubara

Masaru Kakinohana

Naoyuki Hara

Manabu Imano

Helen Skelton

Muriel Lepage

Hidenori Miki

Masaya Ibe

Takeshi Nobukawa

Atsushi Tanaka

Shigeharu Takagi

Hideyuki Koga

Taishi Shiotsuki

Kazutoshi Akashi

Masaya Kamada

Maciej Cabaj

Michio Miura

Yoshiaki Inagaki

Yuuichi Sobue

An all-solid-state battery having an olivine-type positive electrode active material and a sulfur solid electrolyte and a method for producing the all-solid-state battery is provided. The positive electrode active material is a positive electrode active material in which primary particles aggregate into secondary particles. The primary particles have an olivine-type positive electrode active material and a coating layer that coats all or a portion of the olivine-type positive electrode active material. The coating layer contains a transition metal derived from the olivine-type positive electrode active material, lithium, phosphorous and oxygen as components thereof, and the concentration of the transition metal is lower the concentration of the olivine-type positive electrode active material. A transition metal-containing sulfide region with a thickness of 10 nm or less and having sulfur and the transition metal derived from the olivine-type positive electrode active material is present on the surface of the secondary particles.

Positive electrode active material, all-solid-state battery and method for producing all-solid-state battery

The all-solid-state battery system that has an all-solid-state battery, the all-solid-state battery having a positive electrode active material layer, a solid electrolyte layer and a negative electrode active material layer, and a control device that controls the lower limit discharge potential of the positive electrode active material layer of the all-solid-state battery. The positive electrode active material layer and/or the solid electrolyte layer have a sulfide solid electrolyte. In addition, the positive electrode active material layer has an olivine-type positive electrode active material. In addition, the capacity of the negative electrode active material layer is lower than the capacity of the positive electrode active material layer. In addition, the control device controls the lower limit discharge potential of the positive electrode active material layer during normal use of the all-solid-state battery to within the range of 1.6 V vs. Li/Lito 2.1 V vs. Li/Li.

All-solid-state battery system

Sulfide solid electrolyte material with favorable ion conductivity, wherein charge and discharge efficiency is inhibited from decreasing. Solves problem by providing a sulfide solid electrolyte material including a Li element, Si element, P element, S element and O element, having peak at position of 2&#x3b8;=29.58&#xb0;&#xb1;0.50&#xb0; in X-ray diffraction measurement using CuK&#x3b1; ray, wherein sulfide solid electrolyte material does not have peak at position of 2&#x3b8;=27.33&#xb0;&#xb1;0.50&#xb0; in X-ray diffraction measurement using CuK&#x3b1; ray, or in case of having peak at position of 2&#x3b8;=27.33&#xb0;&#xb1;0.50&#xb0;, value of I/Iis 1 or less when diffraction intensity at peak of 2&#x3b8;=29.58&#xb0;&#xb1;0.50&#xb0; is regarded as Iand diffraction intensity at peak of 2&#x3b8;=27.33&#xb0;&#xb1;0.50&#xb0; is regarded as I; and wherein molar fraction of O element to total of S element and O element is larger than 0.2.

Sulfide solid electrolyte material, battery, and method for producing sulfide solid electrolyte material

A sulfide solid electrolyte material with favorable ion conductivity and high reduction resistance. The object is attained by providing sulfide solid electrolyte material comprising: Li element; Ge element; P element; and S element, wherein the sulfide solid electrolyte material peaks at a position of 2&#x3b8;=29.58&#xb0;&#xb1;0.50&#xb0; in X-ray diffraction measurement using CuK&#x3b1; ray, the sulfide solid electrolyte material does not peak at a position of 2&#x3b8;=27.33&#xb0;&#xb1;0.50&#xb0; in X-ray diffraction measurement using CuK&#x3b1; ray or when diffraction intensity at the peak of 2&#x3b8;=29.58&#xb0;&#xb1;0.50&#xb0; is regarded as Iand diffraction intensity at the peak of 2&#x3b8;=27.33&#xb0;&#xb1;0.50&#xb0; is regarded as I, a value of I/Iis less than 1.0, and part of the P element in a crystal phase peaking at the position of 2&#x3b8;=29.58&#xb0;&#xb1;0.50&#xb0; is substituted with a B element.

Sulfide solid electrolyte material, battery, and producing method for sulfide solid electrolyte material

Provided is an exhaust purification system for an internal combustion engine. The exhaust purification system comprising: a NOpurifying catalyst arranged in an exhaust passage of the internal combustion engine, wherein the NOpurifying catalyst comprises a base metal supported on a catalyst support; an oxygen sensor arranged at the downstream side of the NOpurifying catalyst in the exhaust passage; and an air-fuel, ratio control means for controlling the air-fuel ratio of exhaust gas flowing into the NOpurifying catalyst; wherein when the NOpurifying catalyst suffers from predetermined oxygen poisoning, the air-fuel ratio control means controls the air-fuel ratio of the exhaust gas, which flows into the NOpurifying catalyst, to a first air-fuel ratio wherein the first air-fuel ratio is richer than a theoretical air-fuel ratio, and then the air-fuel ratio control means switches the air-fuel ratio of the exhaust gas, which flows into the NOpurifying catalyst, to a second air-fuel ratio on the basis of an output value from the oxygen sensor wherein the second air-fuel ratio is leaner than the first air-fuel ratio.

Exhaust purification system for internal combustion engine

[Problem] The present invention provides a NOpurification catalyst which utilizes Ag as one of the catalyst components and exhibits NOpurification performance without adjustment to a special exhaust gas composition, as well as a method of producing the same. [Means for Solution] The present invention provides a nitrogen oxide purification catalyst in which particulates are supported on a metal oxide carrier, wherein the aforementioned particulates consist of Ag and Ni and the aforementioned Ag and Ni are at least partially alloyed. Also provided is a method of producing the aforementioned catalyst, comprising the step of preparing a colloidal suspension in which the ratio of Ag is 10 to 90 at % with respect to the total amount of Ag and Ni.

[object Object]

The present invention relates to a catalyst able to exhibit an NOpurification performance at a low temperature and/or in an oxidizing atmosphere, that is, a nitrogen oxides purification catalyst composed of particles having an average particle size of 0.2 to 100 nm and including gold atoms and iron atoms in a state of close proximity.

The invention relates to a catalyst able to exhibit an NOpurification performance at a low temperature and/or in an oxidizing atmosphere, that is, a nitrogen oxide purification catalyst including gold atoms and nickel atoms in a solid and a state of close proximity.

To provide a production method of a base metal catalyst for exhaust gas purification and with a catalyst activity, in which a base metal-supported catalyst is uniformly supported by a honeycomb substrate. A production method of a catalyst for exhaust gas purification, comprising the steps of preparing a honeycomb substrate having a plurality of cells, preparing a base metal-supported catalyst comprising a carrier supporting a metal containing a base metal having an exhaust gas purification performance, preparing a slurry having a pH of 7 or more by dispersing the base metal-supported catalyst in an aqueous solution, and introducing the slurry to a partition wall surface of the honeycomb substrate.

Production method of base metal catalyst for exhaust gas purification

Growing community of inventors

Susono, Japan

Mayuko Osaki