公开(公告)号：US11527378B2

公开(公告)日：2022-12-13

申请号：US17288084

申请日：2019-10-21

Applicant: WASEDA UNIVERSITY ,  MEIDENSHA CORPORATION

Inventor： Suguru Noda ,  Sae Kitagawa ,  Kotaro Yasui ,  Hisashi Sugime ,  Daizo Takahashi ,  Yuichi Nishikiori ,  Hayato Ochi ,  Rena Takahashi ,  Toshimasa Fukai

IPC: H01J9/02 ,  H01J1/304 ,  H01J35/06 ,  B82Y40/00

Abstract: It is a CNT device (1) (carbon-metal structure) equipped with a carbon nanotube layer (2) (CNT layer 2; same hereafter) on a metal pedestal (4). The metal pedestal (4) is brazed to the CNT layer (2) with a brazing material layer (3) interposed therebetween. When manufacturing the CNT device (1), firstly, the CNT layer (2) is formed on a heat-resistant textured substrate (6). Next, the metal pedestal (4) is brazed to the CNT layer (2) that is on the heat-resistant textured substrate (6) with the brazing material layer (3) interposed therebetween. Then, the metal pedestal (4) (and the CNT layer 2) is peeled off the heat-resistant textured substrate (6) to transfer the CNT layer (2) from the heat-resistant textured substrate (6) to the metal pedestal (4).

公开(公告)号：US20220140351A1

公开(公告)日：2022-05-05

申请号：US17430569

申请日：2020-02-25

Applicant: WASEDA UNIVERSITY ,  ZEON CORPORATION

Inventor： Suguru Noda ,  Keisuke Hori ,  Tomotaro Mae ,  Yuta Hashizume

IPC: H01M4/80 ,  H01M4/66

Abstract: A secondary battery negative electrode according to the invention includes: a three-dimensional current collector formed of a self-supporting sponge-like structure of carbon nanotubes; a metal active material contained inside the three-dimensional current collector; and a plurality of seed particles contained inside the three-dimensional current collector and made of a material different from the metal active material, in which the secondary battery negative electrode does not include a foil of the metal active material.

公开(公告)号：US20230100804A1

公开(公告)日：2023-03-30

申请号：US17909384

申请日：2020-07-09

Applicant: Waseda University

Inventor： Suguru Noda ,  Rongbin Xie

IPC: H01B1/24 ,  H01B1/12 ,  H01B5/14

Abstract: Provided is a conductive material that is capable of achieving a high-electric conductivity, long-term stability under an atmospheric environment, heat and high humidity stabilities, as well as a conductive film and a solar cell using the same. The conductive material includes a mixture of carbon nanotubes (CNTs) and polystyrene sulfonic acid (PSS acid). The element ratio (S/C ratio) of sulfur (S) to carbon (C) in the mixture may be from 0.001 to 0.1 in terms of the number of atoms. CNTs and PSS acid may make up a content percentage of 10 wt % or more in the mixture. These conductive films comprised of the conductive material 6 may have a weight per unit area of the CNTs in the range from 1 mg/m2 to 10000 mg/m2. The solar cell may include the conductive film 7, wherein the film is on the surface of a semiconductor.

公开(公告)号：US11081701B2

公开(公告)日：2021-08-03

申请号：US16476499

申请日：2017-12-22

Applicant: WASEDA UNIVERSITY ,  ZEON CORPORATION

Inventor： Suguru Noda

IPC: H01M4/80 ,  H01M4/134 ,  H01M4/136 ,  H01M4/66 ,  H01M10/0525 ,  H01M10/058 ,  H01M4/38 ,  H01M4/58

Abstract: A secondary battery includes an electrode structure, the electrode structure includes a positive electrode changing in volume by expansion or contraction during discharging or charging, and a negative electrode changing in volume in a reverse way to the positive. The positive electrode and the negative electrode have a volume ratio of 1.1 or more, the volume ratio being a value obtained by dividing the volume under expansion by the volume under contraction, and the positive electrode or the negative electrode has the volume ratio of 1.9 or more, and has a total volume ratio of 1.2 or less, the total value ratio being a value obtained by dividing a larger value by a smaller value with respect to a total volume of the positive electrode and the negative electrode in a discharged state and a total volume of the positive electrode and the negative electrode in a charged state.

公开(公告)号：US12269742B2

公开(公告)日：2025-04-08

申请号：US18678425

申请日：2024-05-30

Applicant: WASEDA UNIVERSITY ,  MEIJO NANO CARBON CO., LTD.

Inventor： Suguru Noda ,  Katsuya Namiki ,  Zihao Zhang ,  Toshio Osawa ,  Hisashi Sugime

IPC: C01B32/162 ,  B01J4/00 ,  B01J6/00 ,  B82Y40/00

Abstract: Provided are a carbon nanotube production device and production method capable of realizing high-temperature heating of a catalyst raw material in a floating catalyst chemical vapor deposition (FCCVD) method, and improving the quality and yield of carbon nanotubes synthesized. A carbon nanotube production device 1 includes a synthesis furnace 2 for synthesizing carbon nanotubes; a catalyst raw material supplying nozzle 3 for supplying a catalyst raw material used to synthesize carbon nanotubes to the synthesis furnace 2; and a nozzle temperature adjusting unit 6 capable of setting a temperature of an inner portion 4 of the catalyst raw material supplying nozzle 3 higher than a temperature of a reaction field 5 of the synthesis furnace 2. By supplying to the synthesis furnace 2 the catalyst raw material that has been thermally decomposed after being heated to a temperate at which a catalyst metal will not yet be condensed, and by having the thermally decomposed catalyst raw material rapidly cooled to a CVD temperature at the synthesis furnace 2, microscopic catalyst metal particles will be generated at a high density in the space of the reaction field 5 such that carbon nanotubes having a small diameter can be vapor-grown at a high density.

公开(公告)号：US12266803B2

公开(公告)日：2025-04-01

申请号：US17430569

申请日：2020-02-25

Applicant: WASEDA UNIVERSITY ,  ZEON CORPORATION

Inventor： Suguru Noda ,  Keisuke Hori ,  Tomotaro Mae ,  Yuta Hashizume

IPC: H01M4/80 ,  H01M4/134 ,  H01M4/38 ,  H01M4/62 ,  H01M4/66 ,  H01M10/052 ,  H01M10/054

Abstract: A secondary battery negative electrode according to the invention includes: a three-dimensional current collector formed of a self-supporting sponge-like structure of carbon nanotubes; a metal active material contained inside the three-dimensional current collector; and a plurality of seed particles contained inside the three-dimensional current collector and made of a material different from the metal active material, in which the secondary battery negative electrode does not include a foil of the metal active material.

公开(公告)号：US11935668B2

公开(公告)日：2024-03-19

申请号：US17909384

申请日：2020-07-09

Applicant: Waseda University

Inventor： Suguru Noda ,  Rongbin Xie

IPC: H01B1/24 ,  C08L25/18 ,  H01B1/12 ,  H01B5/14 ,  H01L31/0216 ,  H01L31/0224 ,  H10K30/50 ,  H10K30/82 ,  H10K85/10 ,  H10K85/20

CPC classification number: H01B1/24 ,  C08L25/18 ,  H01B1/128 ,  H01B5/14 ,  H01L31/02167 ,  H01L31/022425 ,  H10K30/50 ,  H10K30/821 ,  H10K85/141 ,  H10K85/221 ,  Y02E10/50 ,  Y02E10/549

Abstract: Provided is a conductive material that is capable of achieving a high-electric conductivity, long-term stability under an atmospheric environment, heat and humidity stabilities, as well as a conductive film and a solar cell using the same. The conductive material includes a mixture of carbon nanotubes (CNTs) and polystyrene sulfonic acid (PSS acid). The element ratio (S/C ratio) of sulfur (S) to carbon (C) in the mixture may be from 0.001 to 0.1 in terms of the number of atoms. CNTs and PSS acid may make up a content percentage of 10 wt % or more in the mixture. These conductive films comprised of the conductive material 6 may have a weight per unit area of the CNTs in the range from 1 mg/m2 to 10000 mg/m2. The solar cell may include the conductive film 7, wherein the film is on the surface of a semiconductor.

公开(公告)号：US20200006780A1

公开(公告)日：2020-01-02

申请号：US16476499

申请日：2017-12-22

Applicant: WASEDA UNIVERSITY

Inventor： Suguru Noda

IPC: H01M4/80 ,  H01M4/134 ,  H01M4/136 ,  H01M4/66 ,  H01M10/0525 ,  H01M10/058

Abstract: A secondary battery includes an electrode structure, the electrode structure includes a positive electrode changing in volume by expansion or contraction during discharging or charging, and a negative electrode changing in volume in a reverse way to the positive. The positive electrode and the negative electrode have a volume ratio of 1.1 or more, the volume ratio being a value obtained by dividing the volume under expansion by the volume under contraction, and the positive electrode or the negative electrode has the volume ratio of 1.9 or more, and has a total volume ratio of 1.2 or less, the total value ratio being a value obtained by dividing a larger value by a smaller value with respect to a total volume of the positive electrode and the negative electrode in a discharged state and a total volume of the positive electrode and the negative electrode in a charged state.

公开(公告)号：US11364486B2

公开(公告)日：2022-06-21

申请号：US16078737

申请日：2017-02-17

Applicant: WASEDA UNIVERSITY ,  ZEON CORPORATION

Inventor： Suguru Noda ,  Kosuke Kawabata ,  Takayoshi Hongo

IPC: B01J23/745 ,  B01J23/94 ,  C01B32/162 ,  B01J21/12 ,  B01J35/02 ,  B01J35/10 ,  B01J38/12 ,  C23C16/01 ,  C23C16/26 ,  B01J37/02 ,  B01J37/08 ,  B01J37/14 ,  B01J23/74 ,  C23C28/00 ,  C23C16/40 ,  C23C16/44 ,  D01F9/127 ,  B01J29/89 ,  B82Y30/00 ,  B82Y40/00

Abstract: A supported catalyst comprises: a support that is particulate; and a composite layer laminate formed outside the support and including two or more composite layers, wherein each of the composite layers includes a catalyst portion containing a catalyst and a metal compound portion containing a metal compound, the support contains 10 mass % or more of each of Al and Si, and a volume-average particle diameter of the support is 50 μm or more and 400 μm or less.

公开(公告)号：US10954128B2

公开(公告)日：2021-03-23

申请号：US16078744

申请日：2017-01-20

Applicant: WASEDA UNIVERSITY ,  ZEON CORPORATION

Inventor： Suguru Noda ,  Soichiro Hachiya ,  Zhongming Chen ,  Takayoshi Hongo

IPC: C01B32/162 ,  B01J23/745 ,  C01B32/158 ,  C01B32/152 ,  D01F9/127 ,  C01B32/16 ,  B82Y40/00 ,  B82Y30/00

Abstract: A method of producing fibrous carbon nanostructures uses a fluidized bed process, and comprises supplying a source gas to a reaction site in which a supported catalyst having a particulate carrier and a catalyst supported on a surface of the carrier is fluidizing, to form fibrous carbon nanostructures on the catalyst of the supported catalyst, wherein the source gas contains a double bond-containing hydrocarbon and carbon dioxide, and a content of the carbon dioxide is 0.3 vol % or more with respect to a total volume of the source gas.