Yokohama National University

www.ynu.ac.jp/
Yokohama, Japan

Yokohama National University , or Yokokoku is a leading national university located in Yokohama, Kanagawa Prefecture, Japan. Yokohama National University comprises 5 graduate schools and 4 undergraduate faculties. Yokohama National University is one of leading national universities in Japan. It is consistently one of the highest ranking national universities in Japan that is not one of Japan's National Seven Universities. It is also a core member of the Port-City University League. Wikipedia.

SEARCH FILTERS
Time filter
Source Type

A production method for a cathode material 44 of a lithium sulfur battery 10 includes, in sequence: a step of preparing a first dispersed solution 30 in which a carbon particle 40 is dispersed in a lithium sulfate solution; a step of adding a solvent in the first dispersed solution 30, the solvent being a solvent in which lithium sulfate is insoluble; a step of separating a precursor particle 41 from the first dispersed solution 31 in which the solvent is added; and a step of changing the precursor particle 41 into a cathode active material particle 44 by heating the precursor particle 41 under an inert atmosphere.


Patent
Yokohama National University and De Nora Permelec Ltd. | Date: 2017-08-02

To provide an electrolysis cell for producing an organic chemical hydride capable of advancing a reduction reaction in a cathode of an organic compound having an unsaturated bond with high current efficiency and a small electric power consumption unit. An electrolysis cell 10 for producing an organic chemical hydride includes a solid polymer electrolyte film 11 which has proton conductivity; a cathode 12 which is provided on one surface of the solid polymer electrolyte film 11 and generates a hydride by reducing a substance to be hydrogenated; a cathode chamber 13 which accommodates the cathode 12 and to which the substance to be hydrogenated is supplied; an electrode catalyst-containing anode 14 which is provided on another surface of the solid polymer electrolyte film 11 and generates a proton by oxidizing water; and an anode chamber 15 which accommodates the anode 14 and to which an electrolytic solution is supplied, in which at least one of a surface of the cathode 12 side and a surface of the anode 14 side of the solid polymer electrolyte film 11 is hydrophilized.


Patent
Yokohama National University and De Nora Permelec Ltd. | Date: 2017-02-01

A device for producing an organic hydride 10 of an aspect of the present invention has an electrochemical cell provided with an anode 12 on a surface of an electrolyte membrane 11 and a cathode including a cathode catalyst layer 13 and a cathode diffusion layer 14 on another surface of the electrolyte membrane 11. A gap is provided between the anode 12 and the electrolyte membrane 11. The anode 12 has a network structure with an aperture ratio of 30 to 70%, and has an electrical supply supporting material formed of an electronic conductor and the electrode catalyst held by the electrical supply supporting material.


Patent
Kanagawa Academy Of Science And Technology and Yokohama National University | Date: 2015-03-06

Provided are a transparent fluorescent sialon ceramic having fluorescence and optical transparency; and a method of producing the same. Such a transparent fluorescent sialon ceramic includes a sialon phosphor which contains a matrix formed of a silicon nitride compound represented by the formula M_(x)(Si,Ai)_(y)(N,O)_(z )(here, M represents at least one selected from the group consisting of Li, alkaline earth metals, and rare earth metals, 0x/z<3, and 0


Patent
Toyota Motor Corporation and Yokohama National University | Date: 2016-07-14

Disclosed is a system for detecting an attack, which includes a server and a plurality of vehicles capable of wirelessly communicating with each other. Each of the vehicles has a sensor, a sensor information acquisition unit, a traffic information reception unit, and a transmission unit that transmits the sensor information and the traffic information to the server. The server has a reception unit that receives the sensor information and the traffic information from the vehicles, a verification unit that verifies whether the sensor information and the traffic information are inconsistent with each other, and a notification unit that notifies, when the sensor information and the traffic information are inconsistent with each other, the vehicles of the inconsistency.


Patent
Yokohama National University and De Nora Permelec Ltd | Date: 2015-03-24

A device for producing an organic hydride 10 of an aspect of the present invention has an electrochemical cell provided with an anode 12 on a surface of an electrolyte membrane 11 and a cathode including a cathode catalyst layer 13 and a cathode diffusion layer 14 on another surface of the electrolyte membrane 11. A gap is provided between the anode 12 and the electrolyte membrane 11. The anode 12 has a network structure with an aperture ratio of 30 to 70%, and has an electrical supply supporting material formed of an electronic conductor and the electrode catalyst held by the electrical supply supporting material.


Patent
Yokohama National University | Date: 2015-02-27

The present invention provides a novel oxygen reduction catalyst having a good stability and a high oxygen reduction performance. The oxygen reduction catalyst includes: a conductive oxide; and an oxide(s), having oxygen holes and provided at least on the surface of the conductive oxide, of at least one or more transition metals selected from the group consisting of Ti, Zr, Nb and Ta.


Patent
Yokohama National University and De Nora Permelec Ltd. | Date: 2017-10-11

An anode for oxygen evolution that operates at a small overpotential and in a stable manner, and can be used favorably in an organic chemical hydride electrolytic synthesis apparatus. An anode 10 for oxygen evolution that evolves oxygen in a sulfuric acid aqueous solution containing a substance to be hydrogenated dissolved at a concentration higher than 1 mg/L, wherein an anode substrate 10a is composed of a valve metal, and an anode catalyst layer 10b containing at least one oxide, nitride or carbide of iridium, and at least one oxide, nitride or carbide of at least one metal selected from the group consisting of elements belonging to groups 4, 5 and 13 of the periodic table is formed on the surface of the anode substrate 10a.


Patent
Yokohama National University and De Nora Permelec Ltd. | Date: 2017-09-27

An organic hydride production apparatus that enables the reduction reaction at the cathode of an organic compound having an unsaturated bond to proceed at high current efficiency and at a low electric power consumption rate, and a method for producing an organic hydride that uses this production apparatus. The production apparatus includes a solid polymer electrolyte membrane 11 having proton conductivity, a cathode 12 which is provided on one surface of the solid polymer electrolyte membrane 11 and generates a hydride by reducing a substance to be hydrogenated, a cathode chamber 13 which houses the cathode 12 and is supplied with the substance to be hydrogenated, an electrode catalyst-containing anode 14 which is provided on the other surface of the solid polymer electrolyte membrane 11 and generates protons by oxidizing water, and an anode chamber 15 which houses the anode 14 and is supplied with an electrolytic solution, wherein the substance to be hydrogenated is supplied from the lower end of the cathode chamber 13, the production apparatus has a hydride outlet 18 through which the product and the like is discharged from the upper end of the cathode chamber 13, and at least one partition 12d with a width of not less than 0.1 mm is formed inside the cathode camber 13.


Patent
Yokohama National University | Date: 2016-02-24

A gas detector (10) includes a cell internal space (130) into which a target gas is supplied, the target gas exhibiting an absorption peak in an absorption spectrum; a light source (410) configured to generate light having at least a wavelength belonging to the absorption peak; and a photodetector (420) configured to detect the light that has emitted from the light source (410) and has propagated through the cell internal space (130). The gas detector (10) further includes a conductive thin film (220) in which a plurality of optical apertures(222) are regularly arranged such that a transmission peak in a transmission spectrum is superimposed over the absorption peak in the absorption spectrum along a wavelength axis. The conductive thin film (220) is provided on an optical path extending from the light source (410) to the photodetector (420), and is provided so as to be contactable with the target gas within the cell internal space (130).

Loading Yokohama National University collaborators
Loading Yokohama National University collaborators