公开(公告)号：US20170194105A1

公开(公告)日：2017-07-06

申请号：US14998412

申请日：2016-01-04

申请人： Aruna Zhamu ,  Bor Z. Jang

发明人： Aruna Zhamu ,  Bor Z. Jang

IPC分类号： H01G11/32 ,  H01G11/24 ,  H01G11/06 ,  H01G11/74 ,  H01G11/46 ,  H01G11/86 ,  H01G11/52 ,  H01G11/66

CPC分类号： H01G11/32 ,  H01G11/02 ,  H01G11/06 ,  H01G11/24 ,  H01G11/36 ,  H01G11/46 ,  H01G11/70 ,  H01G11/86 ,  Y02E60/13

摘要： Provided is a supercapacitor having an anode, a cathode, a porous separator/electrolyte, wherein at least one of electrodes contains an integral 3D graphene-carbon hybrid foam composed of multiple pores and pore walls, wherein the pore walls contain single-layer or few-layer graphene sheets chemically bonded by a carbon material having a carbon material-to-graphene weight ratio from 1/100 to 1/2, wherein the few-layer graphene sheets have 2-10 layers of stacked graphene planes having an inter-plane spacing d002 from 0.3354 nm to 0.40 nm and the graphene sheets contain a pristine graphene material having essentially zero % of non-carbon elements, or a non-pristine graphene material having 0.01% to 25% by weight of non-carbon elements wherein said non-pristine graphene is selected from 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.

公开(公告)号：US20170114263A1

公开(公告)日：2017-04-27

申请号：US14756852

申请日：2015-10-22

申请人： Aruna Zhamu ,  Bor Z. Jang

发明人： Aruna Zhamu ,  Bor Z. Jang

IPC分类号： C09K5/14 ,  B29B13/02 ,  B29D7/01 ,  H01B1/04

CPC分类号： C09K5/14 ,  B29B13/021 ,  B29D7/01 ,  H01B1/04

摘要： A process for producing a unitary graphene matrix composite, the process comprising: (a) preparing a graphene oxide gel having graphene oxide molecules dispersed in a fluid medium, wherein the graphene oxide gel is optically transparent or translucent; (b) mixing a carbon or graphite filler phase in said graphene oxide gel to form a slurry; (c) dispensing said slurry onto a surface of a supporting substrate or a cavity of a molding tool; (d) partially or completely removing the fluid medium from the slurry to form a composite precursor, and (e) heat-treating the composite precursor to form the unitary graphene composite at a temperature higher than 100° C. This composite exhibits a combination of exceptional thermal conductivity, electrical conductivity, mechanical strength, surface hardness, and scratch resistance.

公开(公告)号：US20170098856A1

公开(公告)日：2017-04-06

申请号：US14756698

申请日：2015-10-02

申请人： Aruna Zhamu ,  Bor Z. Jang

发明人： Aruna Zhamu ,  Bor Z. Jang

IPC分类号： H01M10/058 ,  H01M4/80 ,  H01M4/66 ,  H01M4/133 ,  H01M4/583 ,  H01M4/48 ,  H01M4/136 ,  H01M4/58 ,  H01M4/131 ,  H01M4/525 ,  H01M4/60 ,  H01M4/52 ,  H01M6/14 ,  H01M6/02 ,  H01M10/0525

CPC分类号： H01M10/058 ,  H01M4/13 ,  H01M4/131 ,  H01M4/133 ,  H01M4/136 ,  H01M4/386 ,  H01M4/483 ,  H01M4/502 ,  H01M4/523 ,  H01M4/525 ,  H01M4/5825 ,  H01M4/583 ,  H01M4/587 ,  H01M4/60 ,  H01M4/606 ,  H01M4/663 ,  H01M4/808 ,  H01M6/02 ,  H01M6/14 ,  H01M10/0525 ,  H01M10/0585

摘要： A process for producing a lithium battery, comprising: (A) Preparing a plurality of conductive porous layers, wet anode layers, and wet cathode layers; (B) Stacking a desired number of porous layers and wet anode layers in an alternating manner to form an anode electrode having a thickness no less than 100 μm; (C) Placing a porous separator layer in contact with the anode electrode; (D) Stacking a desired number of porous layers wet cathode layers in an alternating manner to form a cathode electrode in contact with the porous separator, wherein the cathode electrode has a thickness no less than 100 μm; and (F) Assembling and sealing the anode electrode, separator, and cathode electrode in a housing to produce the lithium battery. The consolidated anode or cathode layer is preferably thicker than 300 more preferably thicker than 400 μm, and further more preferably greater than 500 μm.

公开(公告)号：US20160358686A1

公开(公告)日：2016-12-08

申请号：US15170387

申请日：2016-06-01

申请人： Aruna Zhamu ,  Bor Z. Jang

发明人： Aruna Zhamu ,  Bor Z. Jang

IPC分类号： H01B1/04 ,  C01B31/04 ,  H05K9/00 ,  C09K5/14

CPC分类号： H01B1/04 ,  C01B32/182 ,  C01B32/20 ,  C09K5/14 ,  H05K9/0073 ,  Y10T428/30

摘要： A flexible graphene platelet-filled composite film comprising a carbon or graphitic matrix and 1% to 99% weight fraction of graphene platelets dispersed in the matrix, wherein the graphene platelets are aligned along planar directions of said film and are selected from pristine graphene, oxidized graphene, reduced graphene oxide, fluorinated graphene, hydrogenated graphene, doped graphene, chemically functionalized graphene, or a combination thereof, and wherein the carbon or graphitic matrix is obtained by carbonizing a carbon precursor polymer at a carbonization temperature of at least 300° C. or by carbonizing and graphitizing the carbon precursor polymer at a final graphitization temperature higher than 1,500° C., and the graphitic matrix comprises graphene layers that are substantially oriented parallel to one another with an inclination angle between two graphene layers less than 5 degrees. The film is thermally and electrically conductive, and can be used to dissipate heat in an electronic device or device housing.

摘要翻译： 一种柔性石墨烯填充复合薄膜，其包含碳或石墨基质和分散在基质中的1％至99％重量的石墨烯片晶，其中所述石墨烯薄片沿所述薄膜的平面方向排列，并选自原始石墨烯，氧化 石墨烯，还原型石墨烯氧化物，氟化石墨烯，氢化石墨烯，掺杂石墨烯，化学官能化石墨烯或其组合，其中碳或石墨基体是通过在至少300℃的碳化温度下碳化碳前体聚合物获得的。 或者通过在高于1500℃的最终石墨化温度下碳化和石墨化碳前体聚合物，并且石墨基质包括彼此平行的大致取向的石墨烯层，其中两个石墨烯层之间的倾斜角小于5度。 该膜具有导热和导电性，并且可用于在电子设备或设备外壳中散热。

公开(公告)号：US20160285084A1

公开(公告)日：2016-09-29

申请号：US14545108

申请日：2015-03-27

申请人： Qing Fang ,  Aruna Zhamu ,  Bor Z. Jang

发明人： Qing Fang ,  Aruna Zhamu ,  Bor Z. Jang

IPC分类号： H01M4/36 ,  H01M10/052 ,  H01M4/04 ,  H01M4/38 ,  H01M4/583

CPC分类号： H01M4/1393 ,  C01B32/182 ,  C01B33/021 ,  C01P2004/16 ,  H01M4/0402 ,  H01M4/0419 ,  H01M4/0423 ,  H01M4/0426 ,  H01M4/0428 ,  H01M4/045 ,  H01M4/0471 ,  H01M4/133 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/366 ,  H01M4/386 ,  H01M4/583 ,  H01M4/587 ,  H01M10/052 ,  H01M10/0525 ,  H01M2004/027 ,  H01M2220/20 ,  Y02T10/7011

摘要： Disclosed is a process for producing graphene-silicon nanowire hybrid material, comprising: (A) preparing a catalyst metal-coated mixture mass, which includes mixing graphene sheets with micron or sub-micron scaled silicon particles to form a mixture and depositing a nano-scaled catalytic metal onto surfaces of the graphene sheets and/or silicon particles; and (B) exposing the catalyst metal-coated mixture mass to a high temperature environment (preferably from 300° C. to 2,000° C., more preferably from 400° C. to 1,500° C., and most preferably from 500° C. to 1,200° C.) for a period of time sufficient to enable a catalytic metal-catalyzed growth of multiple silicon nanowires using the silicon particles as a feed material to form the graphene-silicon nanowire hybrid material composition. An optional etching or separating procedure may be conducted to remove catalytic metal or graphene from the Si nanowires.

摘要翻译： 公开了一种生产石墨烯 - 硅纳米线混合材料的方法，包括：（A）制备催化剂金属涂覆的混合物质量，其包括将石墨烯片与微米或亚微米级的硅颗粒混合以形成混合物， 石墨烯片和/或硅颗粒表面上的催化金属; 和（B）将催化剂金属涂覆的混合物物料暴露于高温环境（优选300℃至2000℃，更优选400℃至1,500℃，最优选500℃ 至1200℃）持续足以使得使用硅颗粒作为进料的催化金属催化的多个硅纳米线生长的时间以形成石墨烯 - 硅纳米线混合材料组合物。 可以进行任选的蚀刻或分离程序以从Si纳米线去除催化金属或石墨烯。

公开(公告)号：US09318762B2

公开(公告)日：2016-04-19

申请号：US11704873

申请日：2007-02-12

申请人： Bor Z. Jang ,  Aruna Zhamu

发明人： Bor Z. Jang ,  Aruna Zhamu

IPC分类号： H01M4/90 ,  H01M8/10 ,  H01B1/12 ,  H01M4/86 ,  H01M4/92

CPC分类号： H01M8/1004 ,  H01B1/122 ,  H01M4/8605 ,  H01M4/8652 ,  H01M4/9008 ,  H01M4/921 ,  H01M2008/1095 ,  Y02E60/521 ,  Y02E60/523

摘要： An electro-catalyst composition for use as an electrode, gas diffusion layer-supported electrode, catalytic electrode-coated solid electrolyte layer, and/or membrane-electrode assembly in a proton exchange membrane (PEM) type fuel cell. The composition comprises: (a) a proton- and electron-conducting polymer having at least one heteroatom per backbone monomer unit thereof and a plurality of neutral transition metal atoms covalently bonded to at least a portion of the heteroatoms; wherein the polymer has an electronic conductivity no less than 10−4 S/cm and a proton conductivity no less than 10−5 S/cm. Preferably, the electro-catalyst composition further comprises (b) a plurality of catalytically active particles of a transition metal, nucleated around the covalently bonded transition metal atoms. Also preferably, additional catalytically active catalyst particles with an average dimension smaller than 2 nm (most preferably smaller than 1 nm) are physically dispersed in such a polymer and typically not chemically bonded thereto. A hydrogen-oxygen PEM fuel cell or a direct methanol fuel cell (DMFC) featuring such an electro-catalyst composition in a thin-film electrode exhibits a superior current-voltage response.

摘要翻译： 一种在质子交换膜（PEM）型燃料电池中用作电极的电催化剂组合物，气体扩散层支撑电极，催化电极涂覆的固体电解质层和/或膜 - 电极组件。 该组合物包含：（a）每个其主链单体具有至少一个杂原子的质子和导电聚合物和共价键合至至少一部分杂原子的多个中性过渡金属原子; 其中所述聚合物具有不小于10 -4 S / cm的电子传导率和不小于10-5S / cm的质子传导性。 优选地，电催化剂组合物还包含（b）多个催化活性的过渡金属颗粒，其在共价键合的过渡金属原子周围成核。 还优选地，平均尺寸小于2nm（最优选小于1nm）的另外的催化活性催化剂颗粒物理分散在这种聚合物中，并且通常不与其化学键合。 在薄膜电极中具有这种电催化剂组合物的氢氧PEM燃料电池或直接甲醇燃料电池（DMFC）表现出优异的电流 - 电压响应。

公开(公告)号：US20160043384A1

公开(公告)日：2016-02-11

申请号：US14121151

申请日：2014-08-07

申请人： Aruna Zhamu ,  Bor Z. Jang

发明人： Aruna Zhamu ,  Bor Z. Jang

IPC分类号： H01M4/133 ,  H01M4/04 ,  H01M4/587

CPC分类号： H01M4/133 ,  H01M4/0471 ,  H01M4/134 ,  H01M4/1393 ,  H01M4/364 ,  H01M4/366 ,  H01M4/386 ,  H01M4/387 ,  H01M4/587 ,  H01M10/052 ,  H01M2004/021

摘要： A lithium-ion battery anode layer, comprising an anode active material embedded in pores of a solid graphene foam composed of multiple pores and pore walls, wherein (a) the pore walls contain a pristine graphene material having essentially no (less than 0.01%) non-carbon elements or a non-pristine graphene material having 0.01% to 5% by weight of non-carbon elements; (b) the anode active material is in an amount from 0.5% to 95% by weight based on the total weight of the graphene foam and the anode active material combined, and (c) some of the multiple pores are lodged with particles of the anode active material and other pores are particle-free, and the graphene foam is sufficiently elastic to accommodate volume expansion and shrinkage of the particles of the anode active material during a battery charge-discharge cycle to avoid expansion of the anode layer. Preferably, the solid graphene foam has a density from 0.01 to 1.7 g/cm3, a specific surface area from 50 to 2,000 m2/g, a thermal conductivity of at least 100 W/mK per unit of specific gravity, and/or an electrical conductivity no less than 1,000 S/cm per unit of specific gravity.

摘要翻译： 一种锂离子电池阳极层，包括嵌入由多个孔和孔壁组成的固体石墨烯泡沫的孔中的阳极活性物质，其中（a）孔壁含有基本上没有（小于0.01％）的原始石墨烯材料， 非碳元素或具有0.01重量％至5重量％的非碳元素的非原始石墨烯材料; （b）所述负极活性物质的量相对于所述石墨烯泡沫和所述负极活性物质的总重量为0.5〜95重量％，（c）所述多个孔中的一些与所述 阳极活性材料和其它孔是无颗粒的，并且石墨烯泡沫具有足够的弹性，以适应在电池充放电循环期间阳极活性材料颗粒的体积膨胀和收缩，以避免阳极层膨胀。 优选地，固体石墨烯泡沫的密度为0.01至1.7g / cm 3，比表面积为50至2,000m 2 / g，每单位比重至少为100W / mK的热导率和/或电 电导率不低于每单位比重1000 S / cm。

公开(公告)号：US20160019995A1

公开(公告)日：2016-01-21

申请号：US14120959

申请日：2014-07-17

申请人： Aruna Zhamu ,  Bor Z. Jang

发明人： Aruna Zhamu ,  Bor Z. Jang

IPC分类号： H01B1/04 ,  H01B13/32 ,  H01B13/00 ,  H01B13/30 ,  C01B31/04 ,  H01B5/16

摘要： A process for producing a solid graphene foam composed of multiple pores and pore walls The process comprises: (a) preparing a graphene dispersion having a graphene material dispersed in a liquid medium, which contains an optional blowing agent; (b) dispensing and depositing the graphene dispersion onto a supporting substrate to form a wet layer of graphene material having a preferred orientation; (c) partially or completely removing the liquid medium from the wet layer of graphene material to form a dried layer of graphene material having a content of non-carbon elements no less than 5% by weight (including blowing agent weight); and (d) heat treating the layer of graphene material at a first heat treatment temperature from 80° C. to 3,200° C. at a desired heating rate sufficient to induce volatile gas molecules from the non-carbon elements or to activate the blowing agent for producing the graphene foam having a density from 0.01 to 1.7 g/cm3 or a specific surface area from 50 to 3,000 m2/g.

摘要翻译： 一种生产由多孔和孔壁组成的固体石墨烯泡沫的方法该方法包括：（a）制备分散在含有任选的发泡剂的液体介质中的石墨烯材料的石墨烯分散体; （b）将石墨烯分散体分配并沉积到支撑基底上以形成具有优选取向的石墨烯材料的湿层; （c）从石墨烯材料的湿层部分或完全地去除液体介质以形成具有不少于5重量％（包括发泡剂重量）的非碳元素含量的石墨烯材料干燥层; 和（d）以足以从非碳元素诱导挥发性气体分子或活化发泡剂的所需加热速率在第一热处理温度从80℃至3200℃下热处理所述石墨烯材料层 用于生产密度为0.01至1.7g / cm 3或比表面积为50至3,000m 2 / g的石墨烯泡沫。

公开(公告)号：US09112240B2

公开(公告)日：2015-08-18

申请号：US12655597

申请日：2010-01-04

申请人： Aruna Zhamu ,  Bor Z. Jang ,  Zenning Yu

发明人： Aruna Zhamu ,  Bor Z. Jang ,  Zenning Yu

IPC分类号： H01M4/13 ,  H01M10/0525 ,  B82Y30/00 ,  H01M4/04 ,  H01M4/136 ,  H01M4/1397 ,  H01M4/58 ,  H01M4/62 ,  H01M4/80 ,  H01M10/0562 ,  H01M10/44 ,  H01M4/02 ,  H01M10/42

CPC分类号： H01M10/0525 ,  B82Y30/00 ,  H01M4/0438 ,  H01M4/0445 ,  H01M4/045 ,  H01M4/136 ,  H01M4/1397 ,  H01M4/581 ,  H01M4/5815 ,  H01M4/624 ,  H01M4/80 ,  H01M10/0562 ,  H01M10/446 ,  H01M2004/021 ,  H01M2004/028 ,  H01M2010/4292 ,  Y02E60/122 ,  Y02T10/7011 ,  Y10T29/49115

摘要： An electrochemical cell comprising an anode, electrolyte or an electrolyte/separator combination, and a nano-structured cathode, wherein the cathode comprises: (a) an integrated nano-structure of electrically conductive nanometer-scaled filaments that are interconnected to form a porous network of electron-conducting paths comprising pores with a size smaller than 100 nm (preferably smaller than 10 nm), wherein the filaments have a transverse dimension less than 500 nm (preferably less than 100 nm); and (b) powder or salt of lithium-containing sulfide (lithium polysulfide) disposed in the pores, or a thin coating of lithium-containing sulfide deposited on a nano-scaled filament surface wherein the lithium-containing sulfide is in contact with, dispersed in, or dissolved in electrolyte liquid and the lithium-containing sulfide-to-filament weight ratio is between 1/10 and 10/1 which is measured when the cell is in a fully discharged state. The cell exhibits an exceptionally high specific energy and a long cycle life.

摘要翻译： 包括阳极，电解质或电解质/分离器组合和纳米结构阴极的电化学电池，其中所述阴极包括：（a）互连以形成多孔网络的导电纳米级细丝的整体纳米结构 的电子传导路径，其包括尺寸小于100nm（优选小于10nm）的孔，其中所述长丝具有小于500nm（优选小于100nm）的横向尺寸; 和（b）设置在孔中的含锂硫化物（多硫化锂）的粉末或盐，或沉积在纳米级细丝表面上的含锂硫化物的薄涂层，其中所述含锂硫化物与其分散 在电解液中溶解或溶解，并且当电池处于完全放电状态时测量的含锂硫化物与灯丝的重量比为1/10至10/1。 电池表现出特别高的比能量和较长的循环寿命。

公开(公告)号：US20150037530A1

公开(公告)日：2015-02-05

申请号：US13987528

申请日：2013-08-05

申请人： Aruna Zhamu ,  Bor Z. Jang

发明人： Aruna Zhamu ,  Bor Z. Jang

IPC分类号： C09K5/14 ,  H01B1/24 ,  D01F9/12

CPC分类号： H01B1/24 ,  D01D5/04 ,  D01F9/12 ,  Y10T428/24124 ,  Y10T428/249921 ,  Y10T428/2918

摘要： An impregnated fiber tow comprising multiple unitary graphene-based continuous graphitic fibers impregnated with a matrix material, wherein at least one of the continuous graphitic fibers comprises at least 90% by weight of graphene planes that are chemically bonded with one another having an inter-planar spacing d002 from 0.3354 nm to 0.4 nm as determined by X-ray diffraction and an oxygen content less than 5% by weight, wherein the graphene planes are parallel to one another and parallel to a fiber axis direction and the graphitic fiber contains no core-shell structure, has no helically arranged graphene domains or domain boundary, and has a porosity level less than 5% by volume.

摘要翻译： 浸渍纤维丝束，其包含浸渍有基质材料的多个基于单一石墨烯的连续石墨纤维，其中至少一种连续石墨纤维包含至少90重量％的彼此化学键合的石墨烯平面，所述石墨烯平面具有平面 间隔d002从0.3354nm到0.4nm，通过X射线衍射测定，氧含量小于5重量％，其中石墨烯平面彼此平行并且平行于纤维轴方向，并且石墨纤维不含核心 - 壳结构，没有螺旋排列的石墨烯畴或畴边界，并且具有小于5体积％的孔隙率水平。