公开(公告)号：US20160002046A1

公开(公告)日：2016-01-07

申请号：US14771293

申请日：2014-05-14

申请人： GRAFTECH INTERNATIONAL HOLDINGS INC.

发明人： Iti Srivastava

IPC分类号： C01B31/04

CPC分类号： C01B31/0469 ,  C01B32/184 ,  C01B32/19 ,  C01B2204/04

摘要： A method of producing graphene powder includes the heat treatment of a graphitizable polymer film to at least 2000 degrees C. to form a heat treated film having a substantially turbostratic graphitic structure. The heat treated film is then sheared along a plane substantially parallel to a major surface of the heat treated film to form a particulate having a thickness less than 100 nanometers.

摘要翻译： 制造石墨烯粉末的方法包括将可石墨化聚合物膜热处理至少2000℃，以形成具有基本上涡旋石墨结构的热处理膜。 然后将热处理的膜沿着基本上平行于热处理膜的主表面的平面剪切，以形成厚度小于100纳米的颗粒。

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：US09017638B2

公开(公告)日：2015-04-28

申请号：US13404918

申请日：2012-02-24

申请人： Jong Beom Baek ,  Eun Kyoung Choi ,  In Yup Jeon ,  Seo Yun Bae

发明人： Jong Beom Baek ,  Eun Kyoung Choi ,  In Yup Jeon ,  Seo Yun Bae

IPC分类号： C01B31/02 ,  C07C221/00 ,  C07C45/00 ,  B82B3/00 ,  B82B1/00 ,  C01B31/04 ,  C01B3/00 ,  B82Y40/00 ,  B82Y30/00

CPC分类号： C01B31/0469 ,  B82Y30/00 ,  B82Y40/00 ,  C01B3/0021 ,  C01B32/19 ,  C07C221/00 ,  Y02E60/325 ,  Y02E60/328 ,  Y10S977/734 ,  Y10S977/847 ,  C07C225/22

摘要： Disclosed is a method for producing graphene functionalized at its edge positions of graphite. Organic material having one or more functional groups is reacted with graphite in reaction medium comprising methanesulfonic acid and phosphorus pentoxide, or in reaction medium comprising trifluoromethanesulfonic acid, to produce graphene having organic material fuctionalized at edges. And then, high purity and large scaled graphene and film can be obtained by dispersing, centrifugal separating the functionalized graphene in a solvent and reducing, in particular heat treating the graphene. According to the present invention graphene can be produced inexpensively in a large amount with a minimum loss of graphite. (FIG. 1)

摘要翻译： 公开了一种在石墨的边缘位置上生产石墨烯的方法。 具有一个或多个官能团的有机材料在包含甲磺酸和五氧化二磷的反应介质中或在包含三氟甲磺酸的反应介质中与石墨反应，以产生在边缘有功能的有机材料的石墨烯。 然后，通过将功能化石墨烯分散，离心分离到溶剂中并且特别地热处理石墨烯，可以获得高纯度和大规模的石墨烯和薄膜。 根据本发明，石墨烯可以以极少的石墨损失大量生产， （图。1）

公开(公告)号：US20130266503A1

公开(公告)日：2013-10-10

申请号：US13843964

申请日：2013-03-15

申请人： Jong Beom Baek ,  In Yup Jeon

发明人： Jong Beom Baek ,  In Yup Jeon

IPC分类号： C01B31/04 ,  B23Q1/03

CPC分类号： C01B31/0469 ,  B82Y30/00 ,  B82Y40/00 ,  C01B32/19 ,  Y10T29/49998

摘要： Provided is an apparatus and method for exfoliation of graphene, comprising a chamber which has a through-hole formed at one surface thereof; a cylinder which receives graphite and a volatile material to be vaporized at room temperature and has an opening to be corresponding to the through-hole of the chamber, and which is disposed at an outside of the chamber; a clamp which is disposed in the chamber to pass through the through-hole of the chamber and thus selectively seal the opening of the cylinder; and an operation mechanism which is connected with the clamp and moves the clamp so that the opening of the cylinder is selectively sealed by the clamp. Therefore, it is not necessary to use an acid like sulfuric acid, and it is also not necessary to perform a thermal treatment process for removing sulfuric acid.

摘要翻译： 本发明提供了一种石墨烯剥离装置和方法，包括：在其一个表面形成有通孔的腔室; 容纳石墨的容器和在室温下蒸发的挥发性物质，并且具有与腔室的通孔对应的开口，并且设置在室外; 夹具，其设置在腔室中以穿过腔室的通孔，从而选择性地密封气缸的开口; 以及与夹具连接并使夹具移动以使得气缸的开口被夹具选择性地密封的操作机构。 因此，不需要使用酸如硫酸，也不需要进行用于除去硫酸的热处理工艺。

公开(公告)号：US20120298289A1

公开(公告)日：2012-11-29

申请号：US13303310

申请日：2011-11-23

申请人： KAI-LI JIANG ,  XIAO-YANG LIN ,  LIN XIAO ,  SHOU-SHAN FAN

发明人： KAI-LI JIANG ,  XIAO-YANG LIN ,  LIN XIAO ,  SHOU-SHAN FAN

IPC分类号： B44C1/165 ,  B32B37/00

CPC分类号： C01B31/0469 ,  B82Y30/00 ,  B82Y40/00 ,  C01B32/19 ,  C01B2204/02 ,  C01B2204/04 ,  C01B2204/20 ,  C01B2204/24

摘要： The present disclosure relates to a method for making a graphene/carbon nanotube composite structure. In the method, at least one graphene film is located on a substrate. At least one carbon nanotube layer is combined with the at least one graphene film located on the substrate to form a substrate/graphene/carbon nanotube composite structure. The at least one graphene film is in contact with the at least one carbon nanotube layer in the substrate/graphene/carbon nanotube composite structure. The substrate is removed from the substrate/graphene/carbon nanotube composite structure, thereby forming a graphene/carbon nanotube composite structure.

摘要翻译： 本公开涉及一种制造石墨烯/碳纳米管复合结构的方法。 在该方法中，至少一个石墨烯膜位于基底上。 至少一个碳纳米管层与位于衬底上的至少一个石墨烯膜组合以形成衬底/石墨烯/碳纳米管复合结构。 所述至少一个石墨烯膜与所述基板/石墨烯/碳纳米管复合结构中的所述至少一个碳纳米管层接触。 从衬底/石墨烯/碳纳米管复合结构去除衬底，从而形成石墨烯/碳纳米管复合结构。

公开(公告)号：US08287699B2

公开(公告)日：2012-10-16

申请号：US12460860

申请日：2009-07-27

申请人： Aruna Zhamu ,  Bor Z. Jang

发明人： Aruna Zhamu ,  Bor Z. Jang

IPC分类号： B01J19/10

CPC分类号： C01B31/0469 ,  B01J19/10 ,  B82Y30/00 ,  B82Y40/00 ,  C01B32/19 ,  C01B32/194 ,  C01B32/225

摘要： Provided in this invention is a process for producing chemically functionalized nano graphene materials, known as nano graphene platelets (NGPs), graphene nano sheets, or graphene nano ribbons. Subsequently, a polymer can be grafted to a functional group of the resulting functionalized NGPs. In one preferred embodiment, the process comprises (A) dispersing a pristine graphite material and an azide or bi-radical compound in a liquid medium comprising to form a suspension; and (B) subjecting the suspension to direct ultrasonication with to ultrasonic waves of a desired intensity or power level for a length of time sufficient to produce nano graphene platelets and to enable a chemical reaction to occur between the nano graphene platelets and the azide or bi-radical compound to produce the functionalized nano graphene material. Concurrent production and functionalization of NGPs directly from pristine graphitic materials can be achieved in one step and in the same reactor.

摘要翻译： 在本发明中提供了一种生产化学官能化的纳米石墨烯材料的方法，称为纳米石墨烯片（NGP），石墨烯纳米片或石墨烯纳米带。 随后，可以将聚合物接枝到得到的官能化NGP的官能团上。 在一个优选实施方案中，该方法包括（A）将原始石墨材料和叠氮化物或双自由基化合物分散在包含形成悬浮液的液体介质中; 和（B）使悬浮液对所需强度或功率水平的超声波进行超声波处理足够长的时间以产生纳米石墨烯血小板，并使化学反应发生在纳米石墨烯血小板和叠氮化物或双 以制备功能化的纳米石墨烯材料。 直接来自原始石墨材料的NGP的并行生产和功能化可以在一个步骤和同一个反应器中实现。