公开(公告)号：US20140242275A1

公开(公告)日：2014-08-28

申请号：US13815349

申请日：2013-02-25

申请人： Aruna Zhamu ,  Mingchao Wang ,  Lucy Fu ,  Bor Z. Jang

发明人： Aruna Zhamu ,  Mingchao Wang ,  Lucy Fu ,  Bor Z. Jang

IPC分类号： C01B31/04

CPC分类号： C01B31/0469 ,  C01B31/0423 ,  C01B32/19 ,  C01B32/225

摘要： A process for producing a unitary graphene material, comprising: (a) preparing a graphene oxide (GO) gel having GO molecules dissolved in a fluid medium wherein the GO molecules contain higher than 20% by weight of oxygen; (b) dispensing and depositing a layer of GO gel onto a surface of a substrate to form a layer of deposited GO gel thereon, wherein the dispensing and depositing procedure includes shear-induced thinning; (c) removing the fluid medium from the deposited GO gel to form a GO layer having an inter-plane spacing d002 of 0.4 nm to 1.2 nm as determined by X-ray diffraction; and (d) heat treating the GO layer to form the unitary graphene material at a heat treatment temperature higher than 100° C. to an extent that d002 is decreased to a value of 0.3354 nm to 0.4 nm and the oxygen content is decreased to less than 5% by weight.

摘要翻译： 一种制备单一石墨烯材料的方法，包括：（a）制备具有溶解在其中GO分子含有高于20重量％的氧的流体介质中的GO分子的氧化石墨烯（GO）凝胶; （b）将GO凝胶层分配并沉积到基底表面上以在其上形成沉积的GO凝胶层，其中分配和沉积步骤包括剪切诱导的稀化; （c）通过X射线衍射测定，从沉积的GO凝胶中除去流体介质以形成具有0.4nm至1.2nm的平面间距d002的GO层; 和（d）热处理GO层以在高于100℃的热处理温度下形成单一石墨烯材料，直到d002降低到0.3354nm至0.4nm的值，并且氧含量降低到更低 超过5重量％。

公开(公告)号：US09156700B2

公开(公告)日：2015-10-13

申请号：US13815349

申请日：2013-02-25

申请人： Aruna Zhamu ,  Mingchao Wang ,  Lucy Fu ,  Bor Z. Jang

发明人： Aruna Zhamu ,  Mingchao Wang ,  Lucy Fu ,  Bor Z. Jang

IPC分类号： C01B31/00 ,  C01B31/04

CPC分类号： C01B31/0469 ,  C01B31/0423 ,  C01B32/19 ,  C01B32/225

摘要： A process for producing a unitary graphene material, comprising: (a) preparing a graphene oxide (GO) gel having GO molecules dissolved in a fluid medium wherein the GO molecules contain higher than 20% by weight of oxygen; (b) dispensing and depositing a layer of GO gel onto a surface of a substrate to form a layer of deposited GO gel thereon, wherein the dispensing and depositing procedure includes shear-induced thinning; (c) removing the fluid medium from the deposited GO gel to form a GO layer having an inter-plane spacing d002 of 0.4 nm to 1.2 nm as determined by X-ray diffraction; and (d) heat treating the GO layer to form the unitary graphene material at a heat treatment temperature higher than 100° C. to an extent that d002 is decreased to a value of 0.3354 nm to 0.4 nm and the oxygen content is decreased to less than 5% by weight.

摘要翻译： 一种制备单一石墨烯材料的方法，包括：（a）制备具有溶解在其中GO分子含有高于20重量％的氧的流体介质中的GO分子的氧化石墨烯（GO）凝胶; （b）将GO凝胶层分配并沉积到基底表面上以在其上形成沉积的GO凝胶层，其中分配和沉积步骤包括剪切诱导的稀化; （c）通过X射线衍射测定，从沉积的GO凝胶中除去流体介质以形成具有0.4nm至1.2nm的平面间距d002的GO层; 和（d）热处理GO层以在高于100℃的热处理温度下形成单一石墨烯材料，直到d002降低到0.3354nm至0.4nm的值，并且氧含量降低到更低 超过5重量％。

公开(公告)号：US20140190676A1

公开(公告)日：2014-07-10

申请号：US13694791

申请日：2013-01-07

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

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

IPC分类号： F28F21/02 ,  C09K5/14

CPC分类号： F28F21/02 ,  C09K5/14 ,  F28D2021/0029 ,  F28F21/00

摘要： A unitary graphene-based integrated heat sink comprising a heat collection member (base) and at least one heat dissipation member (e.g. fins) integral to the baser, wherein the base is configured to be in thermal contact with a heat source, collects heat therefrom, and dissipates heat through the fins. The unitary graphene material is obtained from heat-treating a graphene oxide gel at a temperature higher than 100° C., 500° C., 1,250° C., or 2,000° C., and contains chemically bonded graphene molecules having inter-graphene distance of 0.3354-0.4 nm (preferably mm or cm), exhibiting a degree of graphitization preferably from 1% to 100% and a Mosaic spread value less than 0.7 (preferably no greater than 0.4). The finned heat sink may also be made from a filler-reinforced graphene matrix composite.

摘要翻译： 一种单一的基于石墨烯的集成散热器，其包括集热部件（基座）和至少一个与所述基座一体的散热部件（例如散热片），其中所述基座构造成与热源热接触，从其收集热量 ，并通过散热片散热。 单一石墨烯材料通过在高于100℃，500℃，1250℃或2,000℃的温度下热处理石墨烯氧化物凝胶获得，并且包含化学键合的具有石墨烯烯的石墨烯分子 距离为0.3354-0.4nm（优选<0.337nm）。 单一石墨烯材料是石墨烯单晶，具有不完全晶界的多晶体或具有大晶粒尺寸（例如> mm或cm）的多晶体，其石墨化程度优选为1％至100％，并且 马赛克扩散值小于0.7（优选不大于0.4）。 带翅片的散热片也可以由填料增强的石墨烯基复合材料制成。

公开(公告)号：US20130329366A1

公开(公告)日：2013-12-12

申请号：US13507167

申请日：2012-06-11

申请人： Mingchao Wang ,  Wei Xiong ,  Aruna Zhamu ,  Bor Z. Jang

发明人： Mingchao Wang ,  Wei Xiong ,  Aruna Zhamu ,  Bor Z. Jang

IPC分类号： H05K7/20 ,  B82Y30/00

CPC分类号： H05K7/20963 ,  B82Y30/00

摘要： Disclosed is an integrated graphene film-enhanced display device, comprising: (a) a display device which comprises one or multiple heat sources and a back surface where a localized area is at a higher temperature than an adjacent area; and (b) a heat spreader which comprises at least one sheet of integrated graphene film having two major surfaces, wherein one of the major surfaces of the heat spreader is in thermal contact with one or multiple heat sources and further wherein the heat spreader itself reduces the temperature difference between locations on the display device. The integrated graphene film, either a graphene film obtained from a graphene oxide gel or a graphene composite film formed of graphene oxide gel-bonded nano graphene platelets (NGPs), exhibits highest thermal conductivity and highest effectiveness in reducing hot spots in various kinds of display devices.

摘要翻译： 公开了一种集成石墨烯膜增强显示装置，包括：（a）显示装置，其包括一个或多个热源和局部区域处于比相邻区域更高的温度的后表面; 和（b）散热器，其包括具有两个主表面的至少一片整体式石墨烯薄片，其中所述散热器的主表面之一与一个或多个热源热接触，并且其中所述散热器本身减少 显示设备上的位置之间的温度差。 由石墨烯氧化物凝胶获得的石墨烯膜或由石墨烯氧化物凝胶纳米石墨烯片（NGP）形成的石墨烯复合膜的集成石墨烯膜在降低各种显示器中的热点方面表现出最高的导热性和最高效果 设备。

公开(公告)号：US20130264041A1

公开(公告)日：2013-10-10

申请号：US13506265

申请日：2012-04-09

申请人： Aruna Zhamu ,  Mingchao Wang ,  Wei Xiong ,  Bor Z. Jang

发明人： Aruna Zhamu ,  Mingchao Wang ,  Wei Xiong ,  Bor Z. Jang

IPC分类号： F28F7/00

CPC分类号： G06F1/203 ,  B82Y30/00 ,  B82Y40/00 ,  C01B32/182 ,  C01B32/19 ,  C01B32/192 ,  C04B35/522 ,  C04B35/532 ,  C04B35/62218 ,  C04B2235/6025 ,  C04B2235/9607 ,  H01L23/373 ,  H01L2924/0002 ,  H01L2924/00

摘要： Disclosed is a graphene-based heat dissipation system for an electronic device, comprising: (a) an electronic device comprising a heat source, wherein the heat source transmits heat to a second component or an external surface of the electronic device; (b) a heat-conducting layer comprising two major surfaces, the heat-conducting layer being positioned such that one of its major surfaces is in operative contact with the heat source such that it is interposed between the heat source and the second component or the external surface of the electronic device; wherein the heat-conducting layer comprises at least one sheet of integrated graphene film which thermally shields the second component or the external surface of the electronic device from heat generated by the heat source.

摘要翻译： 公开了一种用于电子设备的基于石墨烯的散热系统，包括：（a）包括热源的电子设备，其中所述热源将热量传递到所述电子设备的第二部件或外表面; （b）导热层，其包括两个主表面，所述导热层被定位成使得其主表面中的一个主表面与所述热源可操作地接触，使得其介于所述热源和所述第二部件之间，或者 电子设备的外表面; 其中所述导热层包括至少一片集成的石墨烯薄膜，其将所述电子设备的所述第二组件或所述外表面与所述热源产生的热量进行热屏蔽。

公开(公告)号：US09561955B2

公开(公告)日：2017-02-07

申请号：US13385813

申请日：2012-03-08

申请人： Aruna Zhamu ,  Mingchao Wang ,  Wei Xiong ,  Bor Z. Jang

发明人： Aruna Zhamu ,  Mingchao Wang ,  Wei Xiong ,  Bor Z. Jang

IPC分类号： B82Y30/00 ,  H01B1/04 ,  B82Y40/00

CPC分类号： B82Y30/00 ,  B82Y40/00 ,  H01B1/04 ,  Y10T428/26 ,  Y10T428/268

摘要： Disclosed is a graphene composite thin film composition composed of nano graphene platelets (NGPs) bonded by a graphene oxide binder, wherein the NGPs contain single-layer graphene or multi-layer graphene sheets having a thickness from 0.335 nm to 100 nm. The NGPs occupy a weight fraction of 1% to 99.9% of the total composite weight. The graphene oxide binder, having an oxygen content of 1-40% (preferably

摘要翻译： 公开了由石墨烯氧化物粘合剂结合的纳米石墨烯片（NGP）组成的石墨烯复合薄膜组合物，其中NGP包含单层石墨烯或厚度为0.335nm至100nm的多层石墨烯片。 NGP占总复合重量的1％至99.9％的重量分数。 基于总氧化石墨烯重量，氧含量为1-40％（优选<10％）的氧化石墨烯氧化物粘合剂由氧化石墨烯氧化物凝胶获得。 复合材料形成厚度不大于1mm，优选不大于100μm且不小于10μm的薄膜。 该组合物具有出色的导热性，导电性和机械强度的组合，这些强度与任何相当厚度范围的薄膜材料都无法比拟。

公开(公告)号：US09533889B2

公开(公告)日：2017-01-03

申请号：US13694356

申请日：2012-11-26

申请人： Aruna Zhamu ,  Mingchao Wang ,  Wei Xiong ,  Bor Z. Jang

发明人： Aruna Zhamu ,  Mingchao Wang ,  Wei Xiong ,  Bor Z. Jang

IPC分类号： B32B9/00 ,  C01B31/04 ,  C30B5/00 ,  C30B29/02 ,  C30B29/68 ,  B82Y30/00 ,  B82Y40/00

CPC分类号： C30B1/02 ,  B82Y30/00 ,  B82Y40/00 ,  C01B32/182 ,  C01B32/184 ,  C01B32/19 ,  C01B32/192 ,  C01B32/22 ,  C01B32/225 ,  C01B32/23 ,  C01P2006/10 ,  C01P2006/32 ,  C01P2006/40 ,  C01P2006/80 ,  C30B5/00 ,  C30B29/02 ,  C30B29/68 ,  Y10S977/734 ,  Y10S977/842 ,  Y10T428/30

摘要： A unitary graphene layer or graphene single crystal containing closely packed and chemically bonded parallel graphene planes having an inter-graphene plane spacing of 0.335 to 0.40 nm and an oxygen content of 0.01% to 10% by weight, which unitary graphene layer or graphene single crystal is obtained from heat-treating a graphene oxide gel at a temperature higher than 100° C., wherein the average mis-orientation angle between two graphene planes is less than 10 degrees, more typically less than 5 degrees. The molecules in the graphene oxide gel, upon drying and heat-treating, are chemically interconnected and integrated into a unitary graphene entity containing no discrete graphite flake or graphene platelet. This graphene monolith exhibits a combination of exceptional thermal conductivity, electrical conductivity, mechanical strength, surface smoothness, surface hardness, and scratch resistance unmatched by any thin-film material of comparable thickness range.

摘要翻译： 单层石墨烯层或石墨烯单晶，其含有紧密堆积和化学结合的平行石墨烯平面，其石墨烯平面间距为0.335至0.40nm，氧含量为0.01重量％至10重量％，该单一石墨烯层或石墨烯单晶 通过在高于100℃的温度下热处理石墨烯氧化物凝胶获得，其中两个石墨烯平面之间的平均错位取向角小于10度，更典型地小于5度。 石墨烯氧化物凝胶中的分子在干燥和热处理后被化学相互连接并整合成不含离散石墨薄片或石墨烯薄片的单一石墨烯实体。 该石墨烯整体结构具有卓越的导热性，导电性，机械强度，表面平滑度，表面硬度和耐刮擦性，可与任何相当厚度范围的薄膜材料匹配。

公开(公告)号：US20140127488A1

公开(公告)日：2014-05-08

申请号：US13694161

申请日：2012-11-02

申请人： Aruna Zhamu ,  Mingchao Wang ,  Wei Xiong ,  Bor Z. Jang

发明人： Aruna Zhamu ,  Mingchao Wang ,  Wei Xiong ,  Bor Z. Jang

IPC分类号： H01B1/04

CPC分类号： H01B1/04 ,  B82Y30/00 ,  B82Y40/00 ,  C01B32/192 ,  C01B32/198 ,  C01B32/20 ,  C01B32/23 ,  C01P2006/10 ,  C01P2006/40 ,  C01P2006/90 ,  Y10S977/734 ,  Y10S977/742 ,  Y10S977/89 ,  Y10T428/24975 ,  Y10T428/30

摘要： A graphene oxide-coated graphitic foil, composed of a graphitic substrate or core layer having two opposed primary surfaces and at least a graphene oxide coating layer deposited on at least one of the two primary surfaces, wherein the graphitic substrate layer has a thickness preferably from 0.34 nm to 1 mm, and the graphene oxide coating layer has a thickness preferably from 0.5 nm to 1 mm and an oxygen content of 0.01%-40% by weight based on the total graphene oxide weight. The graphitic substrate layer may be preferably selected from flexible graphite foil, graphene film, graphene paper, graphite particle paper, carbon-carbon composite film, carbon nano-fiber paper, or carbon nano-tube paper. This graphene oxide-coated laminate exhibits a combination of exceptional thermal conductivity, electrical conductivity, mechanical strength, surface smoothness, surface hardness, and scratch resistance unmatched by any thin-film material of comparable thickness range.

摘要翻译： 一种石墨烯氧化物涂覆石墨箔，由石墨基底或具有两个相对的主表面的核心层和至少沉积在两个主表面中的至少一个上的氧化石墨烯涂层组成，其中石墨基底层的厚度优选为 0.34nm至1mm，并且氧化石墨烯氧化物涂层的厚度优选为0.5nm至1mm，氧含量为基于氧化石墨烯总重量的0.01％-40重量％。 石墨基材层可优选选自柔性石墨箔，石墨烯膜，石墨烯纸，石墨颗粒纸，碳 - 碳复合膜，碳纳米纤维纸或碳纳米管纸。 该氧化石墨烯氧化物涂层的层压材料显示了由具有相当厚度范围的任何薄膜材料而具有优异的导热性，导电性，机械强度，表面光滑度，表面硬度和耐划伤性的组合。

公开(公告)号：US20140030590A1

公开(公告)日：2014-01-30

申请号：US13507739

申请日：2012-07-25

申请人： Mingchao Wang ,  Guorong Chen ,  Aruna Zhamu ,  Bor Z. Jang

发明人： Mingchao Wang ,  Guorong Chen ,  Aruna Zhamu ,  Bor Z. Jang

IPC分类号： H01M4/583 ,  H01M4/64 ,  H01M4/66 ,  H01B1/02 ,  H01B1/12 ,  H01G9/00 ,  H01M4/62 ,  H01B1/04 ,  B82Y30/00

CPC分类号： H01B1/04 ,  B82Y30/00 ,  B82Y40/00 ,  H01G11/32 ,  H01G11/36 ,  H01M4/0402 ,  H01M4/366 ,  H01M4/587 ,  H01M10/0525 ,  H01M10/054 ,  Y02E60/13

摘要： Disclosed is an electrode for an electrochemical energy storage device, the electrode comprising a self-supporting layer of a mixture of graphene sheets and spacer particles and/or binder particles, wherein the electrode is prepared without using water, solvent, or liquid chemical. The graphene electrode prepared by the solvent-free process exhibits many desirable features and advantages as compared to the corresponding electrode prepared by a known wet process. These advantages include a higher electrode specific surface area, higher energy storage capacity, improved or higher packing density or tap density, lower amount of binder required, lower internal electrode resistance, more consistent and uniform dispersion of graphene sheets and binder, reduction or elimination of undesirable effect of electrolyte oxidation or decomposition due to the presence of water, solvent, or chemical, etc.

摘要翻译： 公开了一种用于电化学能量存储装置的电极，所述电极包括石墨烯片和间隔颗粒和/或粘合剂颗粒的混合物的自支撑层，其中所述电极在不使用水，溶剂或液体化学品的情况下制备。 与通过已知的湿法制备的相应电极相比，通过无溶剂方法制备的石墨烯电极表现出许多期望的特征和优点。 这些优点包括较高的电极比表面积，较高的能量储存能力，提高或更高的填充密度或振实密度，较少量的粘合剂所需，较低的内部电极电阻，更一致和均匀的石墨烯片和粘合剂分散，减少或消除 由于存在水，溶剂或化学品等导致的电解质氧化或分解的不良影响

公开(公告)号：US09360905B2

公开(公告)日：2016-06-07

申请号：US13506265

申请日：2012-04-09

申请人： Aruna Zhamu ,  Mingchao Wang ,  Wei Xiong ,  Bor Z. Jang

发明人： Aruna Zhamu ,  Mingchao Wang ,  Wei Xiong ,  Bor Z. Jang

IPC分类号： C01B31/04 ,  G06F1/20 ,  H01L23/373 ,  C04B35/52 ,  C04B35/532 ,  C04B35/622 ,  B82Y30/00 ,  B82Y40/00

CPC分类号： G06F1/203 ,  B82Y30/00 ,  B82Y40/00 ,  C01B32/182 ,  C01B32/19 ,  C01B32/192 ,  C04B35/522 ,  C04B35/532 ,  C04B35/62218 ,  C04B2235/6025 ,  C04B2235/9607 ,  H01L23/373 ,  H01L2924/0002 ,  H01L2924/00

摘要： Disclosed is a graphene-based heat dissipation system for an electronic device, comprising: (a) an electronic device comprising a heat source, wherein the heat source transmits heat to a second component or an external surface of the electronic device; (b) a heat-conducting layer comprising two major surfaces, the heat-conducting layer being positioned such that one of its major surfaces is in operative contact with the heat source such that it is interposed between the heat source and the second component or the external surface of the electronic device; wherein the heat-conducting layer comprises at least one sheet of integrated graphene film which thermally shields the second component or the external surface of the electronic device from heat generated by the heat source.