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    Graphene oxide-metal nanowire transparent conductive film
    1.
    发明授权
    Graphene oxide-metal nanowire transparent conductive film 有权

    公开(公告)号：US11037693B2

    公开(公告)日：2021-06-15

    申请号：US16389254

    申请日：2019-04-19

    申请人： Nanotek Instruments, Inc.

    发明人： Yi-jun Lin ,  Aruna Zhamu ,  Bor Z. Jang

    IPC分类号： H01B1/02 ,  H01B1/08 ,  H01B1/04 ,  B82Y30/00 ,  B05D1/00 ,  B05D1/02 ,  B05D1/04 ,  B05D1/18 ,  B05D1/12 ,  C23C4/12 ,  C23C4/04 ,  B05D1/24 ,  B05D5/12 ,  H05K3/12

    摘要： A process for producing a transparent conductive film, comprising (a) providing a graphene oxide gel; (b) dispersing metal nanowires in the graphene oxide gel to form a suspension; (c) dispensing and depositing the suspension onto a substrate; and (d) removing the liquid medium to form the film. The film is composed of metal nanowires and graphene oxide with a metal nanowire-to-graphene oxide weight ratio from 1/99 to 99/1, wherein the metal nanowires contain no surface-borne metal oxide or metal compound and the film exhibits an optical transparence no less than 80% and sheet resistance no higher than 300 ohm/square. This film can be used as a transparent conductive electrode in an electro-optic device, such as a photovoltaic or solar cell, light-emitting diode, photo-detector, touch screen, electro-wetting display, liquid crystal display, plasma display, LED display, a TV screen, a computer screen, or a mobile phone screen.

    Process for nano graphene platelet-reinforced composite material
    2.
    发明授权
    Process for nano graphene platelet-reinforced composite material 有权

    公开(公告)号：US10919760B2

    公开(公告)日：2021-02-16

    申请号：US16108233

    申请日：2018-08-22

    申请人： Nanotek Instruments, Inc.

    发明人： Yi-jun Lin ,  Aruna Zhamu ,  Bor Z. Jang

    IPC分类号： B82Y30/00 ,  H01L23/373

    摘要： A process for producing a nanographene platelet-reinforced composite material having nanographene platelets or sheets (NGPs) as a first reinforcement phase dispersed in a matrix material and the first reinforcement phase occupies a weight fraction of 1-90% based on the total composite weight. Preferably, these NGPs, alone or in combination with a second reinforcement phase, are bonded by an adhesive and constitute a continuous 3-D network of electron- and phonon-conducting paths.

    PRODUCTION PROCESS FOR METALLIZED GRAPHENE FOAM HAVING HIGH THROUGH-PLANE CONDUCTIVITY
    3.
    发明申请
    PRODUCTION PROCESS FOR METALLIZED GRAPHENE FOAM HAVING HIGH THROUGH-PLANE CONDUCTIVITY 审中-公开

    公开(公告)号：US20190300372A1

    公开(公告)日：2019-10-03

    申请号：US15944274

    申请日：2018-04-03

    申请人： Nanotek Instruments, Inc.

    发明人： Yi-jun Lin ,  Aruna Zhamu ,  Bor Z. Jang

    IPC分类号： C01B32/194 ,  C25D5/54

    摘要： A process for producing a metal-bonded graphene foam product, comprising: (a) preparing a graphene dispersion having multiple graphene sheets dispersed in a liquid medium, which contains an optional blowing agent having a blowing agent-to-graphene weight ratio from 0/1.0 to 1.0/1.0; (b) dispensing and depositing the graphene dispersion onto a surface of a supporting substrate to form a wet graphene layer; (c) removing the liquid medium from the wet graphene layer; (d) heat-treating the dried layer of graphene at a first heat treatment temperature selected from 80° C. to 3,200° C. at a desired heating rate sufficient to induce volatile gas molecules from the non-carbon elements of graphene sheets or to activate the blowing agent for producing a sheet or roll of solid graphene foam having multiple pores and pore walls containing graphene sheets; and (e) impregnating or infiltrating a metal into the pores to form the metal-bonded graphene foam.

    APPARATUS FOR GRAPHENE-MEDIATED PRODUCTION OF METALLIZED POLYMER ARTICLES
    4.
    发明申请
    APPARATUS FOR GRAPHENE-MEDIATED PRODUCTION OF METALLIZED POLYMER ARTICLES 审中-公开

    公开(公告)号：US20190283378A1

    公开(公告)日：2019-09-19

    申请号：US15924971

    申请日：2018-03-19

    申请人： Nanotek Instruments, Inc.

    发明人： Yi-jun Lin ,  Shaio-yen Lee ,  Yao-de Jhong ,  Aruna Zhamu ,  Bor Z. Jang

    IPC分类号： B32B27/12 ,  B32B9/00 ,  B32B15/08 ,  B32B15/14 ,  C08J7/04 ,  C08K3/04 ,  C08K3/08

    摘要： Provided is an apparatus for manufacturing a surface-metalized polymer article, the apparatus comprising: (a) a graphene deposition chamber that accommodates a graphene dispersion comprising multiple graphene sheets and an optional conducive filler dispersed in a first liquid medium and an optional adhesive resin dissolved in the first liquid medium, wherein the graphene deposition chamber is operated to deposit the graphene sheets and optional conductive filler to a surface of at least a polymer component for forming at least a graphene-coated polymer component; and (b) a metallization chamber that accommodates a plating solution for plating a layer of a desired metal on the at least a graphene-coated polymer component to obtain the surface-metalized polymer article.

    Graphene-based elastic heat spreader films
    6.
    发明授权
    Graphene-based elastic heat spreader films 有权

    公开(公告)号：US11946704B2

    公开(公告)日：2024-04-02

    申请号：US16559000

    申请日：2019-09-03

    申请人： Nanotek Instruments, Inc.

    发明人： Yi-jun Lin ,  Bor Z. Jang

    IPC分类号： B32B9/00 ,  F28F21/02 ,  B82Y30/00

    CPC分类号： F28F21/02 ,  B82Y30/00 ,  Y10T428/30

    摘要： Provided is a elastic heat spreader film comprising: (a) an elastomer or rubber as a binder material or a matrix material; and (b) multiple graphene sheets that are bonded by the binder material or dispersed in the matrix material, wherein the multiple graphene sheets are substantially aligned to be parallel to one another and wherein the elastomer or rubber is in an amount from 0.001% to 20% by weight based on the total heat spreader film weight; wherein the multiple graphene sheets contain single-layer or few-layer graphene sheets selected from pristine graphene, graphene oxide, reduced graphene oxide, graphene fluoride, graphene chloride, graphene bromide, graphene iodide, hydrogenated graphene, nitrogenated graphene, doped graphene, chemically functionalized graphene, or a combination thereof; and wherein the elastic heat spreader film has a fully recoverable tensile elastic strain from 2% to 100% and an in-plane thermal conductivity from 200 W/mK to 1,750 W/mK.

    Continuous production of 2D inorganic compound platelets
    8.
    发明授权
    Continuous production of 2D inorganic compound platelets 有权

    公开(公告)号：US10953380B1

    公开(公告)日：2021-03-23

    申请号：US16658669

    申请日：2019-10-21

    申请人： Nanotek Instruments, Inc.

    发明人： Yi-jun Lin ,  Hsuan-Wen Lee ,  Aruna Zhamu ,  Bor Z. Jang

    IPC分类号： B01J19/18 ,  C01B32/23 ,  C01B32/225

    摘要： Provided is a process for manufacturing 2D inorganic compound platelets, the process comprising (a) preparing a first stock containing a 3D layered inorganic compound material dispersed in a liquid medium, (h) injecting the first stock into a continuous reactor having a vortex flow, (c) operating the continuous reactor to form a reaction product suspension containing 2D inorganic compound platelets dispersed in the liquid medium, and (d) separating and recovering said 2D inorganic compound platelets from said product suspension. The product suspension may be directed to flow back to the continuous director for further processing for at least another pass through the reactor, prior to step (d). The continuous reactor is preferably a Couette-Taylor reactor.

    Inorganic coating-protected unitary graphene material for concentrated photovoltaic applications
    9.
    发明授权
    Inorganic coating-protected unitary graphene material for concentrated photovoltaic applications 有权

    公开(公告)号：US10566482B2

    公开(公告)日：2020-02-18

    申请号：US13815100

    申请日：2013-01-31

    申请人： Nanotek Instruments, Inc.

    发明人： Aruna Zhamu ,  Mingchao Wang ,  Wei Xiong ,  Bor Z. Jang ,  Yi-jun Lin

    IPC分类号： H01L31/052

    摘要： This invention provides an inorganic coating-protected unitary graphene material article for concentrated photovoltaic cell heat dissipation. The article comprises at least a layer of unitary graphene material having two primary surfaces and an electrically non-conducting layer of inorganic coating deposited on at least one of the primary surfaces, wherein the unitary graphene material is obtained from heat-treating a graphene oxide gel at a heat treatment temperature higher than 100° C. and contains chemically bonded graphene molecules or chemically merged graphene planes having an inter-graphene spacing no greater than 0.40 nm, preferably less than 0.337 nm, and most preferably less than 0.3346 nm.