公开(公告)号：US20230122386A1

公开(公告)日：2023-04-20

申请号：US17503488

申请日：2021-10-18

申请人： Kun Shan University

发明人： Hao-Lin HSU ,  Jean-Hong CHEN

IPC分类号： C01B32/162 ,  C23C16/26 ,  H01M4/133 ,  H01M4/04 ,  B01J19/14 ,  B01J37/18 ,  B01J37/04 ,  B01J37/08 ,  B01J23/887 ,  B01J21/08

摘要： 3D bundle-shaped multi-walled carbon nanotubes and preparation method, includes the following steps: uniformly mixing bi-component alloy catalyst and transition metal in an inert gas environment in order to obtain a three-component nano-intermetallic alloy catalyst; disposing the intermetallic catalyst on the substrate; allowing hydrogen to flow through the substrate, and heating the substrate to a first temperature, and using the hydrogen to undergo a reduction of the intermetallic catalyst at the first temperature; applying a protective gas and a carbon source gas, heating the substrate to a second temperature, undergoing a reaction at the second temperature to generate the 3D bundle-shaped multi-walled carbon nanotubes, and collecting the 3D bundle-shaped multi-walled carbon nanotubes after annealing; wherein the second temperature is greater than or equal to the first temperature; a working electrode includes conductive drain material, a conductive bonding gent and a plurality of 3D bundle-shaped multi-walled carbon nanotubes.

公开(公告)号：US11613466B2

公开(公告)日：2023-03-28

申请号：US17131676

申请日：2020-12-22

申请人： Tsinghua University

发明人： Zhenxing Zhu ,  Fei Wei ,  Jun Gao ,  Silei Sun

IPC分类号： C01B32/158 ,  C01B32/162

摘要： This disclosure relates to the technical field of carbon nanotubes, provides an ultra-long chiral carbon nanotube and a method for preparing the same. The ultra-long chiral carbon nanotube has a diameter of about 1.5 nm to 5.5 nm and has a length of about 100 mm to 650 mm, the ultra-long chiral carbon nanotube includes a double-walled carbon nanotube and a triple-walled carbon nanotube, and each layer of the ultra-long chiral carbon nanotube is semiconducting and has a helix angle greater than 10°.

公开(公告)号：US11608268B2

公开(公告)日：2023-03-21

申请号：US16763205

申请日：2018-11-08

申请人： JIANGXI YUEAN ADVANCED MATERIALS CO., LTD.

发明人： Shangkui Li ,  Bing Wang ,  Bo Li ,  Xianxin Li ,  Haiping Zou ,  Minfeng Zhu

IPC分类号： C01B32/162 ,  C01B32/164 ,  B01J8/18 ,  B01J8/42 ,  B01J23/755

摘要： A method and a device for preparing a carbon nanotube and a prepared carbon nanotube. The method includes: adding iron pentcarbonyl and nickel tetracarbonyl into a multi-stage series fluidized bed and performing decomposition to obtain a catalyst, and discharging the carbon monoxide generated; adding a carbon source and injecting an inert gas into the series fluidized bed for reaction under heating at 600-800° C. for 40-90 min, the ratio of the mass of carbon in the carbon source to the mass of the catalyst being 5-7:3-5. Further provided are a device for preparing a carbon nanotube according to the above method and a carbon nanotube prepared by the above method.

公开(公告)号：US11447391B2

公开(公告)日：2022-09-20

申请号：US15189545

申请日：2016-06-22

申请人： POLYVALOR, LIMITED PARTNERSHIP ,  VALORISATION-RECHERCHE, LIMITED PARTNERSHIP

发明人： Saman Choubak ,  Pierre Lévesque ,  Philippe Gagnon ,  Richard Martel ,  Patrick Desjardins

IPC分类号： C01B32/182 ,  C01B32/162 ,  C23C16/26 ,  C23C16/01 ,  C23C16/455 ,  B01J23/72 ,  B01J23/745 ,  B01J37/06 ,  B01J23/75 ,  B01J37/08 ,  B01J23/755 ,  C01B32/186

摘要： A method of growing a graphene coating or carbon nanotubes on a catalytic substrate by chemical vapor deposition is provided. In the method, the chemical vapor deposition is carried out in an atmosphere in which a ratio Pox/Pred is about 5×10−26 or less, wherein Pox is the partial pressure oxidizing species in the atmosphere and Pred is the partial pressure of reducing species in the atmosphere. A catalytic substrate coated with a graphene coating grown according to this method is also provided.

公开(公告)号：US20220259045A1

公开(公告)日：2022-08-18

申请号：US17735638

申请日：2022-05-03

申请人： LG CHEM, LTD.

发明人： Sung Jin Kim ,  Jae Keun Yoon ,  Dong Hyun Cho ,  Hyun Joon Kang ,  Byung Yul Choi ,  Duk Ki Kim ,  Hyun Woo Park ,  Hyo Sang You

IPC分类号： C01B32/162 ,  H01B1/04 ,  B01J23/847

摘要： The present invention relates to a bundle-type carbon nanotube which has a bulk density of 25 to 45 kg/m3, a ratio of the bulk density to a production yield of 1 to 3, and a ratio of a tap density to the bulk density of 1.3 to 2.0, and a method for preparing the same.

公开(公告)号：US11312102B2

公开(公告)日：2022-04-26

申请号：US16436006

申请日：2019-06-10

申请人： Tsinghua University ,  HON HAI PRECISION INDUSTRY CO., LTD.

发明人： Peng Liu ,  Kai-Li Jiang ,  Shou-Shan Fan

IPC分类号： B32B5/12 ,  B82Y30/00 ,  B82Y40/00 ,  C01B32/162

摘要： The present disclosure relates to a carbon nanotube structure. The carbon nanotube structure includes a carbon nanotube array, a carbon nanotube layer located on the carbon nanotube array, and a carbon nanotube cluster between the carbon nanotube array and the carbon nanotube layer. The carbon nanotube array includes a number of first carbon nanotubes that are parallel with each other. The carbon nanotube layer includes a number of second carbon nanotubes. The carbon nanotube cluster includes a plurality of third carbon nanotubes that are entangled around both the plurality of first carbon nanotubes and the plurality of second carbon nanotubes. The carbon nanotube array is fixed on the carbon nanotube layer by the plurality of third carbon nanotubes so that the entire carbon nanotube structure is free-standing.

公开(公告)号：US11305997B2

公开(公告)日：2022-04-19

申请号：US16850737

申请日：2020-04-16

申请人： TPR CO., LTD.

发明人： Toshiaki Shimizu ,  Shinpei Teshima ,  Yasuhiko Okamura ,  Yusuke Kawaguchi ,  Kazuki Otomo ,  Yuta Koguchi ,  Katsuhito Suzuki ,  Yoshio Bando

IPC分类号： C01B32/162

摘要： Applicability to a composite material with high purity and high strength, and a material requiring high conductivity or high thermal conductivity is enhanced. The present invention relates to a multi-walled carbon nanotube having two or more tubes of a graphene sheet where carbon atoms are arranged in a hexagonal honeycomb form, coaxially, wherein a diameter of an outermost wall based on observation of an image by a transmission electron microscope is 3 nm or more and 15 nm or less, and a length based on observation of an image of a scanning electron microscope is 1.0 mm or more, an aggregate of multi-walled carbon nanotubes and a method for preparing the multi-walled carbon nanotube.

公开(公告)号：US20220081297A1

公开(公告)日：2022-03-17

申请号：US17474409

申请日：2021-09-14

申请人： Alliance for Sustainable Energy, LLC ,  The University of Denver

发明人： Jeffrey Lee BLACKBURN ,  Andrew John FERGUSON ,  Barry Lee ZINK

IPC分类号： C01B32/168 ,  C01B32/162 ,  B01J23/882

摘要： The present disclosure relates to a composition that includes a film having a network of randomly aligned carbon nanotubes, where the carbon nanotubes have an average diameter between about 0.6 nm and about 2.0 nm and the carbon nanotubes form bundles having an average diameter between about 3 nm and about 50 nm. In addition, the composition is characterized by a power factor α2σ between 1 μW/mK2 and about 3500 μW/mK2 and by ZT=α2σT/k between about 0.02 and about 2.0 over a temperature range between about 100 K and about 500 K.

公开(公告)号：US20220009780A1

公开(公告)日：2022-01-13

申请号：US17293798

申请日：2020-07-24

申请人： HINDUSTAN PETROLEUM CORPORATION LIMITE

发明人： Lavanya MEESALA ,  Pramod KUMAR ,  Ramachandra Rao BOJJA ,  Sri ganesh GANDHAM

IPC分类号： C01B32/162 ,  B01J21/18 ,  B01J37/02 ,  B01J37/10 ,  B01J37/08 ,  B01J35/10 ,  B01J23/80 ,  C01B3/26 ,  B01J8/24

摘要： The present disclosure discloses a catalyst composition comprising: (a) at least one steamed biochar; and (b) at least one tri-metallic catalyst, comprising metals selected from the group consisting of nickel, copper, zinc, and combinations thereof, wherein nickel loading is in the range of 20-60 wt %, the copper loading is in the range of 0.5-5.0 wt %, and the zinc loading is in the range of 0.5-5.0 wt with respect to the at least one steamed biochar. The instant disclosure further relates to a process of preparation of the catalyst composition and a process for production of hydrogen gas and carbon nanotubes.

公开(公告)号：US11171324B2

公开(公告)日：2021-11-09

申请号：US15452500

申请日：2017-03-07

申请人： HONDA MOTOR CO., LTD. ,  NANOSYNTHESIS PLUS, LTD.

发明人： Avetik Harutyunyan ,  Neal Pierce ,  Elena Mora Pigos

IPC分类号： H01M4/36 ,  B01J8/00 ,  C01B32/16 ,  B01J8/18 ,  B01J8/32 ,  C01G53/00 ,  H01M4/62 ,  C01B32/162 ,  B01J8/24 ,  H01M4/505 ,  H01M4/525 ,  H01M4/587 ,  B82Y30/00 ,  B82Y40/00 ,  H01M10/0525 ,  H01M4/02

摘要： A method of producing a composite product is provided. The method includes providing a fluidized bed of metal oxide particles in a fluidized bed reactor, providing a catalyst or catalyst precursor in the fluidized bed reactor, providing a carbon source in the fluidized bed reactor for growing carbon nanotubes, growing carbon nanotubes in a carbon nanotube growth zone of the fluidized bed reactor, and collecting a composite product comprising metal oxide particles and carbon nanotubes.