公开(公告)号：US11339054B2

公开(公告)日：2022-05-24

申请号：US15817882

申请日：2017-11-20

申请人： Nanotek Instruments, Inc.

发明人： Aruna Zhamu ,  Bor Z Jang

IPC分类号： C01B32/19 ,  B01J4/00 ,  C01B32/192 ,  B01J19/18 ,  C01B32/184 ,  C01B32/23 ,  B01J19/24

摘要： Provided is a method of producing isolated graphene sheets, comprising: (a) providing a reacting slurry containing a mixture of particles of a graphite or carbon material and an intercalant and/or an oxidizing agent; (b) providing one or a plurality of flow channels to accommodate the reacting slurry, wherein at least one of the flow channels has an internal wall surface and a volume and an internal wall-to-volume ratio of from 10 to 4,000; (c) moving the reacting slurry continuously or intermittently through at least one or a plurality of flow channels, enabling reactions between the graphite or carbon particles and the intercalant and/or oxidant to occur substantially inside the flow channels to form a graphite intercalation compound (GIC) or oxidized graphite (e.g. graphite oxide) or oxidized carbon material as a precursor material; and (d) converting the precursor material to isolated graphene sheets.

公开(公告)号：US11223035B2

公开(公告)日：2022-01-11

申请号：US15822882

申请日：2017-11-27

申请人： Nanotek Instruments, Inc.

发明人： Aruna Zhamu ,  Bor Z Jang

IPC分类号： H01M4/133 ,  H01M4/131 ,  C01B32/194 ,  C01B32/192 ,  C01B32/184 ,  C01B32/19 ,  C01B32/182 ,  C01G33/00 ,  H01M10/0525 ,  H01M4/02

摘要： A graphene-enabled hybrid particulate for use as a lithium-ion battery anode active material, wherein the hybrid particulate is formed of a single or a plurality of graphene sheets and a single or a plurality of fine primary particles of a niobium-containing composite metal oxide, having a size from 1 nm to 10 μm, and the graphene sheets and the primary particles are mutually bonded or agglomerated into the hybrid particulate containing an exterior graphene sheet or multiple exterior graphene sheets embracing the primary particles, and wherein the hybrid particulate has an electrical conductivity no less than 10−4 S/cm and said graphene is in an amount of from 0.01% to 30% by weight based on the total weight of graphene and the niobium-containing composite metal oxide combined.

公开(公告)号：US20210355385A1

公开(公告)日：2021-11-18

申请号：US17388742

申请日：2021-07-29

申请人： The University of Adelaide

发明人： Dusan LOSIC ,  Md Julker NINE ,  Diana N H TRAN

IPC分类号： C09K21/02 ,  C08K3/38 ,  C01B32/192 ,  C08K3/04 ,  C01B32/19 ,  C09K21/06 ,  C08K3/22 ,  C08J7/05 ,  C08J7/06 ,  C09D5/18

摘要： A method of improving fire retardant properties of a substrate includes providing the substrate with a graphene-based composite, wherein the graphene-based composite includes graphene-based material intercalated with inorganic metal hydrate.

公开(公告)号：US11097951B2

公开(公告)日：2021-08-24

申请号：US15630758

申请日：2017-06-22

申请人： The Regents of the University of California

发明人： Matthew Kowal ,  Richard B. Kaner ,  Maher F. El-Kady

IPC分类号： C01B32/23 ,  C01B32/198 ,  C01B32/192 ,  C01B7/00 ,  C07D307/62

摘要： Provided herein are carbon-based oxide (CBO) materials and reduced carbon-based oxide (rCBO) materials, fabrication processes, and devices with improved performance and a high throughput. In some embodiments, the present disclosure provides materials and methods for synthesizing CBO and rCBO materials. Such methods avoid the shortcomings of current synthesizing methods to facilitate facile, high-throughput production of CBO and rCBO materials.

公开(公告)号：US10989681B2

公开(公告)日：2021-04-27

申请号：US16063029

申请日：2016-12-16

申请人： Purdue Research Foundation

发明人： David H. Thompson ,  Christopher Benjamin ,  Kyle J. Wright ,  Scott C. Bolton ,  Seok-Hee Hyun

IPC分类号： G01N27/12 ,  C01B32/192 ,  G01N27/414 ,  H01J37/20 ,  G01N1/30 ,  B82Y30/00 ,  B82Y40/00 ,  C07K1/14

摘要： Grids comprising a coating modified with one or more capture agents and a deactivating agent are disclosed. Methods of using such grids in connection with suitable microscopy techniques, such as for determining the structure of target compounds including proteins, are also disclosed.

公开(公告)号：US20200317524A1

公开(公告)日：2020-10-08

申请号：US16374176

申请日：2019-04-03

申请人： Nanotek Instruments, Inc.

发明人： Aruna Zhamu ,  Song-Hai Chai ,  Bor Z. Jang

IPC分类号： C01B32/192 ,  C01B32/198 ,  C01B32/225

摘要： Provided is a powder mass of multiple porous graphene balls, wherein at least one of the porous graphene balls comprises multiple graphene sheets having a catalyst, in a form of nanoparticles or coating having a diameter or thickness from 0.3 nm to 10 nm, bonded to or supported by graphene sheet surfaces, wherein the porous graphene balls have a density from 0.01 to 1.7 g/cm3 (preferably and typically from 0.1 to 1.5 g/cm3), and a specific surface area from 50 to 3,000 m2/g (preferably and typically from 200 to 2,630 m2/g). A method of producing such porous graphene balls is provided as well. Also provided is a gas storage device containing the invented powder mass as a gas-absorbing, gas-adsorbing, gas-capturing, or gas-storing medium to store a gas species therein.

公开(公告)号：US10707025B2

公开(公告)日：2020-07-07

申请号：US15724892

申请日：2017-10-04

申请人： Nanotek Instruments, Inc.

发明人： Songhai Chai ,  Aruna Zhamu ,  Bor Z. Jang

IPC分类号： H01G11/06 ,  H01M4/38 ,  H01M4/48 ,  H01G11/48 ,  H01G11/50 ,  H01G11/26 ,  H01G11/36 ,  H01G11/34 ,  H01G11/86 ,  C01B32/198 ,  C01B32/192 ,  C01B32/10 ,  H01M12/00 ,  C01B32/225 ,  H01M4/02 ,  H01G11/56 ,  H01G11/62 ,  B82Y40/00 ,  B82Y30/00

摘要： Provided is an internal hybrid electrochemical cell comprising: (A) a pseudocapacitance cathode comprising a cathode active material that contains both graphene sheets and a porphyrin complex, wherein said porphyrin complex is bonded to or supported by primary surfaces of said graphene sheets to form a redox pair for pseudocapacitance; (B) a battery-like anode comprising lithium metal, lithium metal alloy, or a prelithiated anode active material (e.g. prelithiated Si, SiO, Sn, SnO2, etc.), and (C) a lithium-containing electrolyte in physical contact with the anode and the cathode; wherein the cathode active material has a specific surface area no less than 100 m2/g which is in direct physical contact with the electrolyte.

公开(公告)号：US20200010326A1

公开(公告)日：2020-01-09

申请号：US16458764

申请日：2019-07-01

申请人： GUANGZHOU SPECIAL PRESSURE EQUIPMENT INSPECTION AND RESEARCH INSTITUTE

发明人： Bo YANG ,  Guojia HUANG ,  Maodong LI ,  Yue LI ,  Fang WEN ,  Huachao GUO ,  Wei ZHAI ,  Shuanghong ZHANG ,  Zhigang WANG ,  Shiping LI ,  Zhenling WU ,  Yingyi HE

IPC分类号： C01B32/192 ,  C01G49/10 ,  C07C275/02

摘要： An intercalation agent for rapid graphite exfoliation in mass production of high-quality graphene is provided, including a transition metal halide salt, a nitrogen source substance and an organic solvent, and the mass ratio of the transition metal halide salt, the nitrogen source substance and the organic solvent is (1-10):1:(2-10). The transition metal halide salt can form a eutectic with the nitrogen source substance or the organic solvent, and the melting point thereof is lower than that of each component, thereby lowering the reaction temperature, and the preparation cost and difficulty; and a hydrogen bond can also be formed between the nitrogen source substance and the organic solvent, thereby avoiding interlayer stacking of the prepared graphene, thus improving the exfoliation efficiency and the product quality.

公开(公告)号：US10461332B2

公开(公告)日：2019-10-29

申请号：US14507872

申请日：2014-10-07

申请人： SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

发明人： Hiroatsu Todoriki ,  Yumiko Saito ,  Takahiro Kawakami ,  Kuniharu Nomoto ,  Mikio Yukawa

IPC分类号： H01M4/583 ,  H01M4/133 ,  H01G11/36 ,  H01G11/22 ,  H01G11/32 ,  H01G9/042 ,  H01M4/04 ,  H01M4/1393 ,  H01M4/587 ,  B82Y30/00 ,  B82Y40/00 ,  H01M4/139 ,  H01M4/62 ,  H01M6/16 ,  H01M10/0566 ,  C01B32/23 ,  C01B32/192 ,  H01M10/0525

摘要： The formation method of graphene includes the steps of forming a layer including graphene oxide over a first conductive layer; and supplying a potential at which the reduction reaction of the graphene oxide occurs to the first conductive layer in an electrolyte where the first conductive layer as a working electrode and a second conductive layer with a as a counter electrode are immersed. A manufacturing method of a power storage device including at least a positive electrode, a negative electrode, an electrolyte, and a separator includes a step of forming graphene for an active material layer of one of or both the positive electrode and the negative electrode by the formation method.

公开(公告)号：US20190103599A1

公开(公告)日：2019-04-04

申请号：US15526662

申请日：2015-11-17

申请人： IMAGINE INTELLIGENT MATERIALS LIMITED

发明人： PHILIP AITCHISON ,  GRANT MATHIESON

IPC分类号： H01M4/133 ,  H01M4/583 ,  C01B32/192 ,  C02F1/461 ,  C02F1/469 ,  H01M4/62 ,  H01G11/36

摘要： An electrode with a relatively high surface area formed substantially from graphene sheets.