公开(公告)号：US20140235123A1

公开(公告)日：2014-08-21

申请号：US13815316

申请日：2013-02-21

申请人： Yi-jun Lin ,  Aruna Zhamu ,  Bor Z. Jang

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

IPC分类号： H01B1/04 ,  H01B13/00

CPC分类号： H01B1/04 ,  B82Y30/00 ,  G06F3/041 ,  G06F2203/04103 ,  Y10T428/31678 ,  Y10T442/10

摘要： An optically transparent and electrically conductive film composed of metal nanowires or carbon nanotubes combined with pristine graphene with a metal nanowire-to-graphene or carbon nanotube-to-graphene weight ratio from 1/99 to 99/1, wherein the pristine graphene is single-crystalline and contains no oxygen and no hydrogen, 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.

摘要翻译： 由金属纳米线或碳纳米管与原始石墨烯组合的光学透明和导电膜，其中金属纳米线对石墨烯或碳纳米管与石墨烯的重量比为1/99至99/1，其中原始石墨烯为单一 不含氧而不含氢，膜的光学透明度不低于80％，薄层电阻不高于300欧姆/平方。 该膜可以用作电光装置中的透明导电电极，例如光伏或太阳能电池，发光二极管，光电检测器，触摸屏，电润湿显示器，液晶显示器，等离子体显示器，LED 显示，电视屏幕，电脑屏幕或手机屏幕。

公开(公告)号：US08753740B2

公开(公告)日：2014-06-17

申请号：US12592970

申请日：2009-12-07

申请人： Aruna Zhamu ,  Bor Z. Jang

发明人： Aruna Zhamu ,  Bor Z. Jang

IPC分类号： B32B1/00

CPC分类号： H01G11/38 ,  C01B32/20 ,  D01D5/423 ,  D01F9/12 ,  D01F11/12 ,  Y02E60/13 ,  Y10T428/2918

摘要： The present invention provides a submicron-scaled graphitic fibril having a diameter or thickness less than 1 μm, wherein the fibril is free of continuous thermal carbon overcoat, free of continuous hollow core, and free of catalyst. The fibril is obtained by splitting a micron-scaled carbon fiber or graphite fiber along the fiber axis direction. The diameter or thickness is preferably less than 500 nm and can be greater or less than 100 nm. These graphitic fibrils exhibit exceptionally high electrical conductivity, thermal conductivity, elastic modulus, and strength. The present invention also provides several products that contain submicron graphitic fibrils: (a) paper, thin-film, mat, and web products; (b) rubber or tire products; (c) energy conversion or storage devices, such as fuel cells, lithium-ion batteries, and supercapacitors; (d) adhesives, inks, coatings, paints, lubricants, and grease products; (e) heavy metal ion scavenger; (f) absorbent (e.g., to recover spill oil); (g) sensors; (h) friction and brake components; (i) radiation-shield components; and (j) nanocomposite materials.

摘要翻译： 本发明提供直径或厚度小于1μm的亚微米级石墨原纤，其中原纤维不含连续的热碳外涂层，不含连续的中空芯，并且不含催化剂。 原纤维通过沿纤维轴线方向分裂微米级碳纤维或石墨纤维而获得。 直径或厚度优选小于500nm，并且可以大于或小于100nm。 这些石墨纤维表现出特别高的导电性，导热性，弹性模量和强度。 本发明还提供了几种含有亚微米石墨原纤的产品：（a）纸，薄膜，垫和网产品; （b）橡胶或轮胎产品; （c）燃料电池，锂离子电池和超级电容器等能量转换或存储装置; （d）粘合剂，油墨，涂料，涂料，润滑剂和油脂产品; （e）重金属离子清除剂; （f）吸收剂（例如，以回收溢油）; （g）传感器; （h）摩擦和制动部件; （i）辐射屏蔽部件; 和（j）纳米复合材料。

公开(公告)号：US08728679B2

公开(公告)日：2014-05-20

申请号：US11807379

申请日：2007-05-29

申请人： Aruna Zhamu ,  Jinjun Shi ,  Jiusheng Guo ,  Bor Z. Jang

发明人： Aruna Zhamu ,  Jinjun Shi ,  Jiusheng Guo ,  Bor Z. Jang

IPC分类号： H01M8/24 ,  B32B7/02

CPC分类号： H01M8/0228 ,  H01M8/0206 ,  H01M8/0213 ,  H01M8/0226 ,  Y10T428/24942

摘要： An electrically conductive laminate composition for fuel cell flow field plate or bipolar plate applications. The laminate composition comprises at least a thin metal sheet having two opposed exterior surfaces and a first exfoliated graphite composite sheet bonded to the first of the two exterior surfaces of the metal sheet wherein the exfoliated graphite composite sheet comprises: (a) expanded or exfoliated graphite and (b) a binder or matrix material to bond the expanded graphite for forming a cohered sheet, wherein the binder or matrix material is between 3% and 60% by weight based on the total weight of the first exfoliated graphite composite sheet. Preferably, the first exfoliated graphite composite sheet further comprises particles of non-expandable graphite or carbon in the amount of between 3% and 60% by weight based on the total weight of the non-expandable particles and the expanded graphite. Further preferably, the laminate comprises a second exfoliated graphite composite sheet bonded to the second surface of the metal sheet to form a three-layer laminate. Surface flow channels and other desired geometric features can be built onto the exterior surfaces of the laminate to form a flow field plate or bipolar plate. The resulting laminate has an exceptionally high thickness-direction conductivity and excellent resistance to gas permeation.

摘要翻译： 一种用于燃料电池流场板或双极板应用的导电层压组合物。 所述层叠组合物至少包括具有两个相对的外表面的薄金属片和与所述金属片的两个外表面中的第一外表面结合的第一剥离石墨复合片，其中所述剥离石墨复合片包括：（a）膨胀或剥离的石墨 和（b）粘合剂或基质材料，以结合用于形成粘结片材的膨胀石墨，其中基于第一剥离石墨复合片材的总重量，粘合剂或基质材料为3重量％至60重量％。 优选地，基于不可膨胀颗粒和膨胀石墨的总重量，第一剥离石墨复合片材还包含不可膨胀石墨或碳的颗粒，其量为3重量％至60重量％。 进一步优选地，层压体包括结合到金属板的第二表面的第二剥离石墨复合片，以形成三层层压体。 可以在层压板的外表面上形成表面流动通道和其它期望的几何特征，以形成流场板或双极板。 所得到的层压体具有非常高的厚度方向导电性和优异的耐气体渗透性。

公开(公告)号：US20130213677A1

公开(公告)日：2013-08-22

申请号：US13385350

申请日：2012-02-16

申请人： Aruna Zhamu ,  Guorong Chen ,  Wei Xiong ,  Bor Z. Jang ,  Yanbo Wang ,  Qing Fang

发明人： Aruna Zhamu ,  Guorong Chen ,  Wei Xiong ,  Bor Z. Jang ,  Yanbo Wang ,  Qing Fang

IPC分类号： B25F5/00

CPC分类号： B25F5/00 ,  H01G11/06 ,  H01G11/50 ,  H01M4/133 ,  H01M6/5033 ,  H01M10/0525 ,  H01M10/465 ,  H01M12/005 ,  H01M14/00 ,  H01M16/00 ,  H01M2220/30 ,  H02M3/1582 ,  Y02B70/1483 ,  Y02E60/122 ,  Y02E60/13 ,  Y02P70/54

摘要： A portable power tool comprises an electric motor, actuator, or light-emitting hardware and a rechargeable power source connected to the electric motor, actuator, or light-emitting hardware, wherein the power source contains at least a surface-mediated cell (SMC). The power tools include, but are not limited to, impact driver, air compressor, alligator shear, angle grinder, band saw, belt sander, biscuit joiner, ceramic tile cutter tile saw, chainsaw, circular saw, concrete saw, cold saw, crusher, diamond blade, diamond tools, disc sander, drill, floor sander, grinding machine, heat gun, impact wrench, jackhammer, jointer, jigsaw, lathe, miter saw, nail gun, needle scaler, torque wrench, powder-actuated tools, power wrench, radial arm saw, random orbital sander, reciprocating saw, rotary reciprocating saw, rotary tool, sabre saw, sander, scroll saw, steel cut off saw, table saw, thickness planer, trimmer, wall chaser, wood router, or flashlight.

公开(公告)号：US08501307B2

公开(公告)日：2013-08-06

申请号：US11899009

申请日：2007-09-04

申请人： Aruna Zhamu ,  Jinjun Shi ,  Jiusheng Guo ,  Bor Z. Jang

发明人： Aruna Zhamu ,  Jinjun Shi ,  Jiusheng Guo ,  Bor Z. Jang

IPC分类号： B32B9/00 ,  H01B1/04 ,  H01B1/06

CPC分类号： H01B1/04

摘要： This invention provides an electrically conductive, less anisotropic, recompressed exfoliated graphite article comprising a mixture of (a) expanded or exfoliated graphite flakes; and (b) particles of non-expandable graphite or carbon, wherein the non-expandable graphite or carbon particles are in the amount of between about 3% and about 70% by weight based on the total weight of the particles and the expanded graphite flakes combined; wherein the mixture is compressed to form the article having an apparent bulk density of from about 0.1 g/cm3 to about 2.0 g/cm3. The article exhibits a thickness-direction conductivity typically greater than 50 S/cm, more typically greater than 100 S/cm, and most typically greater than 200 S/cm. The article, when used in a thin foil or sheet form, can be a useful component in a sheet molding compound plate used as a fuel cell separator or flow field plate. The article may also be used as a current collector for a battery, supercapacitor, or any other electrochemical cell.

公开(公告)号：US20130190956A1

公开(公告)日：2013-07-25

申请号：US13374894

申请日：2012-01-23

申请人： Aruna Zhamu ,  Guorong Chen ,  Xiqing Wang ,  Bor Z. Jang ,  Yanbo Wang ,  Qing Fang

发明人： Aruna Zhamu ,  Guorong Chen ,  Xiqing Wang ,  Bor Z. Jang ,  Yanbo Wang ,  Qing Fang

IPC分类号： B60L11/18 ,  B62D61/06 ,  B62D61/02 ,  B64D27/02 ,  B60W20/00 ,  B61C7/04 ,  B63H21/17 ,  B62M6/40 ,  G06F19/00

CPC分类号： B61C7/04 ,  B60L11/1811 ,  B60L2200/26 ,  B60W20/00 ,  B62M6/90 ,  B63H21/17 ,  B64D2041/005 ,  Y02T10/7011 ,  Y02T10/7016 ,  Y02T10/7072 ,  Y02T30/16 ,  Y02T30/40 ,  Y02T90/127 ,  Y02T90/14 ,  Y02T90/36

摘要： This invention provides a vehicle powered by a surface-mediated cell (SMC)-based power source, comprising a vehicle frame, at least a wheel supporting the frame or a propeller connected to the frame, a drive unit connected to the wheel or propeller, and a power source electrically connected to the drive unit, wherein the power source contains at least a surface-mediated cell. The vehicle can be a micro-EV (using the SMC for the stop-start function), HEV, plug-in HEV, all-electric vehicle, power-assisted bicycle, scooter, motorcycle, tricycle, automobile, wheelchair, fork lift, golf cart, specialty vehicle, bus, truck, train, rapid-transit vehicle, boat, or air vehicle. The ultra-high power density enables the SMC to provide pulsed power or increased current demands when the vehicle is accelerating or hill-climbing. The SMC also enables the power source to recuperate the braking energy when the vehicle decelerates, brakes, or simply moves down-hill.

摘要翻译： 本发明提供了一种由基于表面介质单元（SMC）的电源供电的车辆，其包括车架，至少一个支撑框架的轮子或连接到该框架的螺旋桨，连接到车轮或螺旋桨的驱动单元， 以及电连接到所述驱动单元的电源，其中所述电源至少包含表面介导的单元。 车辆可以是微型EV（使用SMC进行停止启动功能），HEV，插电式HEV，全电动车，动力辅助自行车，踏板车，摩托车，三轮车，汽车，轮椅，叉车， 高尔夫球车，特种车辆，公共汽车，卡车，火车，快速运输车辆，船只或机动车辆。 超高功率密度使SMC能够在车辆加速或爬坡时提供脉冲功率或增加电流需求。 当车辆减速，制动或简单地向下移动时，SMC还使电源能够恢复制动能量。

公开(公告)号：US20130005917A1

公开(公告)日：2013-01-03

申请号：US13573260

申请日：2012-09-06

申请人： Aruna Zhamu ,  Bor Z. Jang

发明人： Aruna Zhamu ,  Bor Z. Jang

IPC分类号： C07D203/26 ,  C08F8/30 ,  C08L67/04 ,  B01J19/10 ,  C07D487/04 ,  B82Y40/00

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 graphene. In one preferred embodiment, the process comprises a step of mixing a starting nano graphene material having edges and two primary graphene surfaces, an azide or bi-radical compound, and an organic solvent in a reactor, and allowing a chemical reaction between the nano graphene material and the azide compound to proceed at a temperature for a length of time sufficient to produce the functionalized nano graphene material.

公开(公告)号：US08216541B2

公开(公告)日：2012-07-10

申请号：US12231411

申请日：2008-09-03

申请人： Bor Z. Jang ,  Aruna Zhamu

发明人： Bor Z. Jang ,  Aruna Zhamu

IPC分类号： C01B31/00

CPC分类号： B82Y40/00 ,  B82Y30/00 ,  C01B32/15 ,  Y10S977/755 ,  Y10S977/775

摘要： The present invention provides a process for producing nano graphene platelets (NGPs) that are both dispersible and electrically conducting. The process comprises: (a) preparing a pristine NGP material from a graphitic material; and (b) subjecting the pristine NGP material to an oxidation treatment to obtain the dispersible NGP material, wherein the NGP material has an oxygen content no greater than 25% by weight. Conductive NGPs can find applications in transparent electrodes for solar cells or flat panel displays, additives for battery and supercapacitor electrodes, conductive nanocomposite for electromagnetic wave interference (EMI) shielding and static charge dissipation, etc.

摘要翻译： 本发明提供了可分散和导电的纳米石墨烯片晶（NGP）的制备方法。 该方法包括：（a）从石墨材料制备原始的NGP材料; 和（b）对原始NGP材料进行氧化处理以获得可分散的NGP材料，其中NGP材料的氧含量不大于25重量％。 导电NGP可用于太阳能电池或平板显示器的透明电极，电池和超级电容器电极的添加剂，电磁波干扰（EMI）屏蔽和静电荷耗散的导电纳米复合材料等。

公开(公告)号：US20120045688A1

公开(公告)日：2012-02-23

申请号：US12806679

申请日：2010-08-19

申请人： Chenguang Liu ,  Aruna Zhamu ,  David Neff ,  Bor Z. Jang

发明人： Chenguang Liu ,  Aruna Zhamu ,  David Neff ,  Bor Z. Jang

IPC分类号： H01M10/052 ,  H01M10/0563

CPC分类号： H01M4/587 ,  H01G11/06 ,  H01G11/38 ,  H01G11/50 ,  H01M10/0525 ,  Y02E60/122 ,  Y02E60/13 ,  Y02T10/7011 ,  Y02T10/7022

摘要： An electrochemical energy storage device, lithium super-battery, comprising a positive electrode, a negative electrode, a porous separator disposed between the two electrodes, and a lithium-containing electrolyte in physical contact with the two electrodes, wherein the positive electrode comprises a plurality of chemically functionalized nano graphene platelets (f-NGP) or exfoliated graphite having a functional group that reversibly reacts with a lithium atom or ion. In a preferred embodiment, a lithium super-battery having a f-NGP positive electrode and Li4Ti5O12 negative electrode exhibits a gravimetric energy ˜5 times higher than conventional supercapacitors and a power density ˜10 times higher than conventional lithium-ion batteries. This device has the best properties of both the lithium ion battery and the supercapacitor.

摘要翻译： 一种锂电池，包括正极，负极，设置在两个电极之间的多孔隔板的锂电池，以及与两个电极物理接触的含锂电解质，其中正电极包括多个 的化学官能化纳米石墨烯片（f-NGP）或具有与锂原子或离子可逆反应的官能团的剥离石墨。 在一个优选实施例中，具有f-NGP正极和Li 4 Ti 5 O 12负极的锂超级电池表现出比传统超级电容器高约5倍的重量能量，并且功率密度比常规锂离子电池高约10倍。 该器件具有锂离子电池和超级电容器的最佳性能。

公开(公告)号：US20110190435A1

公开(公告)日：2011-08-04

申请号：US12983947

申请日：2011-01-04

申请人： Bor Z. Jang ,  Aruna Zhamu

发明人： Bor Z. Jang ,  Aruna Zhamu

IPC分类号： C08K3/20 ,  C09K3/00 ,  B82Y30/00

CPC分类号： B82Y40/00 ,  B82Y30/00 ,  C01B32/15 ,  C01B32/22 ,  C01B32/225 ,  C01B32/23 ,  C01B33/40 ,  C01B2204/04 ,  C01P2004/24 ,  C09C1/44 ,  C09C1/46

摘要： Disclosed is a method of exfoliating a layered material (e.g., graphite and graphite oxide) to produce nano-scaled platelets having a thickness smaller than 100 nm, typically smaller than 10 nm, and often between 0.34 nm and 1.02 nm. The method comprises: (a) subjecting the layered material in a powder form to a halogen vapor at a first temperature above the melting point or sublimation point of the halogen at a sufficient vapor pressure and for a duration of time sufficient to cause the halogen molecules to penetrate an interlayer space of the layered material, forming a stable halogen-intercalated compound; and (b) heating the halogen-intercalated compound at a second temperature above the boiling point of the halogen, allowing halogen atoms or molecules residing in the interlayer space to exfoliate the layered material to produce the platelets. Alternatively, rather than heating, step (a) is followed by a step of dispersing the halogen-intercalated compound in a liquid medium which is subjected to ultrasonication for exfoliating the halogen-intercalated compound to produce the platelets, which are dispersed in the liquid medium. The halogen can be readily captured and re-used, thereby significantly reducing the impact of halogen to the environment. The method can further include a step of dispersing the platelets in a polymer or monomer solution or suspension as a precursor step to nanocomposite fabrication.

摘要翻译： 公开了一种剥离层状材料（例如石墨和氧化石墨）以产生厚度小于100nm，通常小于10nm，通常在0.34nm和1.02nm之间的纳米级片晶的方法。 该方法包括：（a）在高于卤素的熔点或升华点的第一温度下以足够的蒸汽压将粉末形式的层状材料经受卤素蒸气，持续足以引起卤素分子 穿透层状材料的层间空间，形成稳定的卤素插层化合物; 和（b）在高于卤素沸点的第二温度下加热卤素插层的化合物，使得驻留在层间空间中的卤素原子或分子剥离层状材料以产生血小板。 或者，步骤（a）不是加热，而是将卤素插入化合物分散在液体介质中的步骤，该液体介质经过超声波处理以使卤素插层化合物剥离以产生分散在液体介质中的血小板 。 可以容易地捕获和重新使用卤素，从而显着降低卤素对环境的影响。 该方法还可以包括将血小板分散在聚合物或单体溶液或悬浮液中作为前体步骤的纳米复合制备的步骤。