公开(公告)号：US20220242733A1

公开(公告)日：2022-08-04

申请号：US17629244

申请日：2020-07-20

Applicant: NEC Corporation ,  Meijo University

Inventor： Ryota YUGE ,  Sumio ILJIMA

IPC: C01B32/166

Abstract: The object of the present invention is to provide a production method and a production apparatus for a thin film of aligned carbon nanotubes. The present invention relates to a production method for an aligned carbon nanotube film having a film thickness of less than 1000 nm, including a step of causing a part of a dispersion solvent liquid of a carbon nanotube dispersion liquid to permeate to a lower surface side of a filter paper while causing the carbon nanotube dispersion liquid to flow in one direction on an upper surface of the filter paper, and a production apparatus that can be used for said method.

公开(公告)号：US20200368712A1

公开(公告)日：2020-11-26

申请号：US16636214

申请日：2017-08-04

Applicant: NEC CORPORATION

Inventor： Ryota YUGE

IPC: B01J19/12 ,  C01B32/18 ,  C23C14/28 ,  C23C14/06

Abstract: A production apparatus for manufacturing carbon nanohorn aggregates including fibrous carbon nanohorn aggregates includes a target holding unit holding a cylindrical carbon target containing Fe or another metal catalyst, a light source irradiating a laser beam on the surface of the carbon target, a production chamber configured to irradiate the carbon target with the laser beam in a non-oxidizing gas atmosphere to produce a product including the CNB, a collection mechanism collecting the product, a rotation mechanism rotating the carbon target, and a moving mechanism moving the carbon target in the axial direction thereof.

公开(公告)号：US20200006768A1

公开(公告)日：2020-01-02

申请号：US16482126

申请日：2018-01-31

Applicant: NEC CORPORATION

Inventor： Ryota YUGE ,  Mitsuharu TABUCHI ,  Kyousuke DOUMAE ,  Hideka SHIBUYA

IPC: H01M4/525 ,  H01M4/505 ,  H01M10/0525 ,  C01G53/00

Abstract: A lithium-manganese composite oxide containing a lithium-iron-manganese composite oxide represented by the composition formula: Li1+x−w(FeyNizMn1−y−z)1−xO2−δ, where 0

公开(公告)号：US20190208676A1

公开(公告)日：2019-07-04

申请号：US16330276

申请日：2017-04-27

Applicant: NEC CORPORATION

Inventor： Ryota YUGE

IPC: H05K9/00 ,  C01B32/18

Abstract: The electromagnetic wave absorbing material excellent in electrical conductivity and dispersibility and containing a carbon material suitable for an electromagnetic wave absorbing material is an electromagnetic wave absorbing material characterized by containing a fibrous carbon nanohorn aggregate composed of a plurality of single-walled carbon nanohorns gathering in a fibrous form, the fibrous carbon nanohorn aggregate contains single-walled carbon nanotubes inside, and by fabricating using a catalyst-containing carbon target containing a single body of Fe, Ni or Co or a mixture thereof, a fibrous carbon nanohorn aggregate including the metal contained in the target is obtained.

公开(公告)号：US20160056466A1

公开(公告)日：2016-02-25

申请号：US14779254

申请日：2014-03-27

Applicant: NEC CORPORATION

Inventor： Noriyuki TAMURA ,  Qian CHENG ,  Ryota YUGE

IPC: H01M4/587 ,  H01M10/052 ,  H01M4/48 ,  H01M4/133

CPC classification number: H01M4/587 ,  H01M4/133 ,  H01M4/483 ,  H01M10/052 ,  H01M2004/027

Abstract: The present invention has an object to provide a negative electrode carbon material capable of providing a lithium secondary battery improved in the capacity characteristic, and a negative electrode for a lithium secondary battery and a lithium secondary battery using the negative electrode carbon material. The negative electrode carbon material for a lithium secondary battery according to the present invention comprises an oxidized amorphous carbon material comprising oxidized graphene layers. The oxidized amorphous carbon material can be obtained by subjecting an amorphous carbon to an oxidation treatment so that graphene layers of carbon crystallites contained in the amorphous carbon are oxidized.

Abstract translation: 本发明的目的是提供能够提供容量特性提高的锂二次电池的负极碳材料，以及使用负极碳材料的锂二次电池用负极和锂二次电池。 根据本发明的用于锂二次电池的负极碳材料包括氧化的无定形碳材料，其包含氧化石墨烯层。 氧化的无定形碳材料可以通过使无定形碳进行氧化处理，使得包含在无定形碳中的碳微晶石墨烯层被氧化而获得。

公开(公告)号：US20150311513A1

公开(公告)日：2015-10-29

申请号：US14651590

申请日：2013-11-21

Applicant: NEC CORPORATION

Inventor： Ryota YUGE ,  Akio TODA ,  Takashi MIYAZAKI

IPC: H01M4/36 ,  G01N23/201 ,  H01M4/38 ,  H01M4/48 ,  H01M10/0525 ,  H01M4/62

CPC classification number: H01M4/366 ,  G01N23/201 ,  H01M4/134 ,  H01M4/364 ,  H01M4/382 ,  H01M4/386 ,  H01M4/48 ,  H01M4/483 ,  H01M4/485 ,  H01M4/625 ,  H01M10/0525 ,  H01M2220/20 ,  H01M2220/30 ,  Y02T10/7011

Abstract: There is provided a negative electrode material for lithium ion secondary batteries having a structure in which in charged and discharged states, a LixSi compound (2) exists in the inside of a Li oxide (1) and the LixSi compound is dispersed in the inside of the Li oxide. The negative electrode material, in which volume change resulting from charge/discharge is suppressed, has excellent performance as a negative electrode material for lithium ion secondary batteries.

Abstract translation: 提供了一种用于锂离子二次电池的负极材料，其具有这样的结构，其中在充电和放电状态下，Li xSi化合物（2）存在于Li氧化物（1）的内部，并且LixSi化合物分散在 氧化锂。 由于充放电导致的体积变化被抑制的负极材料作为锂离子二次电池的负极材料具有优异的性能。

公开(公告)号：US20240002990A1

公开(公告)日：2024-01-04

申请号：US18248112

申请日：2021-07-20

Applicant: Japan Aviation Electronics Industry, Ltd. ,  NEC Corporation

Inventor： Kazuomi SATO ,  Kazuhiro TOKUNAGA ,  Yasuhiro YUZURIHARA ,  Mayumi KOSAKA ,  Ryota YUGE

IPC: C23C2/04

CPC classification number: C23C2/04

Abstract: An object of the present invention is to provide a structure, a sliding member and a connector, having a surface (sliding surface) that is excellent in abrasion resistance and can keep contact resistance low for a long period, and a method for producing the structure. The object is attained by a structure having a configuration where a nanocarbon material is disposed on an at least partial surface of a metal, a sliding member and a connector, having the configuration, and a method for producing the structure. In the structure, it is preferred that a coating containing the nanocarbon material and an organic compound having at least a first functional group having affinity for the metal and a second functional group having affinity for the nanocarbon material should be disposed on the at least partial surface of the metal.

公开(公告)号：US20230036037A1

公开(公告)日：2023-02-02

申请号：US17859129

申请日：2022-07-07

Applicant: NEC Corporation

Inventor： Ryota YUGE

IPC: C01B32/18 ,  H01B1/04

Abstract: Disclosed is a hydrophilic carbon nanohorn aggregate comprising a carbon nanohorn aggregate having an oxygen-containing functional group introduced at a tip of a carbon nanohorn, and a cyclodextrin which is capping the tip of the carbon nanohorn and being stabilized.

公开(公告)号：US20220267152A1

公开(公告)日：2022-08-25

申请号：US17629156

申请日：2020-07-20

Applicant: NEC Corporation ,  Meijo University

Inventor： Ryota YUGE ,  Sumio IIJIMA

IPC: C01B32/172 ,  C01B32/159 ,  C01B32/174 ,  B03C5/02 ,  C25D13/02

Abstract: The object of the present invention is to provide a separation method and a separation apparatus for carbon nanotubes capable of separating a mixture of carbon nanotubes in a highly efficient, inexpensive and simple manner. The present invention relates to a carbon nanotube separation method comprising: a step of preparing a dispersion liquid including a mixture of two or more types of carbon nanotubes having different zeta potentials; a step of introducing the dispersion liquid into a flow path formed between a first electrode having holes for allowing the dispersion liquid to pass therethrough, and a second electrode arranged so as to face the first electrode; a step of applying a DC voltage to the first electrode and the second electrode while the dispersion liquid is flowing through the flow path; and, a step of continuously collecting a dispersion liquid including carbon nanotubes separated to a first electrode side upon application of the voltage from an opposite side to the flow path with respect to the first electrode, and at the same time, continuously collecting a dispersion liquid including carbon nanotubes separated to a second electrode side from a downstream side of the flow path.

公开(公告)号：US20200283296A1

公开(公告)日：2020-09-10

申请号：US16754597

申请日：2017-10-10

Applicant: NEC CORPORATION

Inventor： Kazuki IHARA ,  Mayumi KOSAKA ,  Ryota YUGE ,  Hideaki NUMATA ,  Fumiyuki NIHEY

IPC: C01B32/172 ,  B01D47/00

Abstract: A nanocarbon separation device includes a separation tank which is configured to accommodate a dispersion liquid including a nanocarbon, a first electrode that is provided at an upper part in the separation tank, a second electrode that is provided at a lower part in the separation tank, and a partition member that is provided between the first electrode and the second electrode in the separation tank, and the partition member partitions the separation tank into a plurality of regions.