公开(公告)号：US20150028263A1

公开(公告)日：2015-01-29

申请号：US13987450

申请日：2013-07-26

申请人： Yanbo Wang ,  Bor Z. Jang ,  Aruna Zhamu

发明人： Yanbo Wang ,  Bor Z. Jang ,  Aruna Zhamu

IPC分类号： H01M4/38 ,  H01M4/62

CPC分类号： H01M4/364 ,  H01M4/386 ,  H01M4/587 ,  H01M4/625 ,  H01M10/052 ,  H01M2004/027

摘要： Disclosed is a facile and cost effective method of producing nano silicon powder or graphene-doped silicon nano powder having a particle size smaller than 100 nm. The method comprises: (a) preparing a silicon precursor/graphene nano composite; (b) mixing the silicon precursor/graphene nano composite with a desired quantity of magnesium; (c) converting the silicon precursor to form a mixture of graphene-doped silicon and a reaction by-product through a thermal and/or chemical reduction reaction; and (d) removing the reaction by-product from the mixture to obtain graphene-doped silicon nano powder.

摘要翻译： 公开了一种制造具有小于100nm的粒度的纳米硅粉末或石墨烯掺杂的硅纳米粉末的简便和成本有效的方法。 该方法包括：（a）制备硅前体/石墨烯纳米复合材料; （b）将硅前体/石墨烯纳米复合材料与所需量的镁混合; （c）通过热和/或化学还原反应转化硅前体以形成掺杂有石墨烯的硅和反应副产物的混合物; 和（d）从混合物中除去反应副产物以获得石墨烯掺杂的硅纳米粉末。

公开(公告)号：US20140315100A1

公开(公告)日：2014-10-23

申请号：US13986319

申请日：2013-04-22

申请人： Yanbo Wang ,  Bor Z. Jang ,  Hui He ,  Aruna Zhamu ,  Yi-jun Lin

发明人： Yanbo Wang ,  Bor Z. Jang ,  Hui He ,  Aruna Zhamu ,  Yi-jun Lin

IPC分类号： H01M4/36

CPC分类号： H01M4/366 ,  H01M4/136 ,  H01M4/1397 ,  H01M4/621 ,  H01M4/625 ,  H01M10/3909 ,  H01M2004/021 ,  Y10T29/49115

摘要： A rechargeable lithium-sulfur cell comprising an anode, a separator and/or electrolyte, a sulfur cathode, an optional anode current collector, and an optional cathode current collector, wherein the cathode comprises (a) exfoliated graphite worms that are interconnected to form a porous, conductive graphite flake network comprising pores having a size smaller than 100 nm; and (b) nano-scaled powder or coating of sulfur, sulfur compound, or lithium polysulfide disposed in the pores or coated on graphite flake surfaces wherein the powder or coating has a dimension less than 100 nm. The exfoliated graphite worm amount is in the range of 1% to 90% by weight and the amount of powder or coating is in the range of 99% to 10% by weight based on the total weight of exfoliated graphite worms and sulfur (sulfur compound or lithium polysulfide) combined. The cell exhibits an exceptionally high specific energy and a long cycle life.

摘要翻译： 包括阳极，隔板和/或电解质，硫阴极，任选的阳极集电器和任选的阴极集电器的可再充电锂 - 硫电池，其中所述阴极包括（a）相互连接形成的剥离的石墨蠕虫 多孔导电石墨薄片网络，其包含尺寸小于100nm的孔; 和（b）设置在孔中的纳米级粉末或硫，硫化合物或多硫化锂的涂层，或涂覆在石墨片表面上，其中粉末或涂层具有小于100nm的尺寸。 剥离石墨蠕虫量在1重量％至90重量％的范围内，粉末或涂层的量基于脱落的石墨蠕虫和硫（硫化合物）的总重量在99重量％至10重量％的范围内 或多硫化锂）组合。 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：US20130302697A1

公开(公告)日：2013-11-14

申请号：US13506736

申请日：2012-05-14

申请人： Yanbo Wang ,  Aruna Zhamu ,  Bor Z. Jang

发明人： Yanbo Wang ,  Aruna Zhamu ,  Bor Z. Jang

IPC分类号： H01M4/64 ,  H01M10/054 ,  B82Y30/00

CPC分类号： H01M10/054 ,  B82Y30/00 ,  H01G11/36 ,  H01G11/56 ,  H01M4/0445 ,  H01M4/466 ,  H01M4/485 ,  H01M4/5815 ,  H01M4/5825 ,  H01M4/587 ,  H01M10/446 ,  Y02E60/122 ,  Y02E60/13

摘要： A magnesium-ion cell comprising (a) a cathode comprising a carbon or graphitic material as a cathode active material having a surface area to capture and store magnesium thereon, wherein the cathode forms a meso-porous structure having a pore size from 2 nm to 50 nm and a specific surface area greater than 50 m2/g; (b) an anode comprising an anode current collector alone or a combination of an anode current collector and an anode active material; (c) a porous separator disposed between the anode and the cathode; (d) electrolyte in ionic contact with the anode and the cathode; and (e) a magnesium ion source disposed in the anode to obtain an open circuit voltage (OCV) from 0.5 volts to 3.5 volts when the cell is made.

摘要翻译： 一种镁离子电池，其包含（a）包含碳或石墨材料作为阴极活性材料的阴极，所述阴极活性材料具有捕获并存储镁的表面积，其中所述阴极形成孔径为2nm至 50nm，比表面积大于50m2 / g; （b）阳极，其包括单独的阳极集电器和阳极集电器和负极活性材料的组合; （c）设置在阳极和阴极之间的多孔隔板; （d）与阳极和阴极离子接触的电解质; 和（e）设置在阳极中的镁离子源，以在制造电池时获得从0.5伏至3.5伏的开路电压（OCV）。

公开(公告)号：US20150217538A1

公开(公告)日：2015-08-06

申请号：US13999283

申请日：2014-02-06

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

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

IPC分类号： B32B9/04 ,  B32B38/00 ,  B32B37/24

CPC分类号： B32B9/04 ,  B32B5/00 ,  B82Y30/00 ,  B82Y40/00 ,  C01B32/182 ,  C01B32/23 ,  C01P2006/10 ,  C01P2006/32 ,  C01P2006/40 ,  C04B35/52 ,  C04B35/645 ,  C04B2235/5292 ,  C04B2235/604 ,  C04B2235/723 ,  C04B2235/787 ,  Y10T156/1075

摘要： A process for producing a bulk highly oriented graphene structure, comprising: (a) preparing a graphene oxide dispersion having graphene oxide (GO) sheets dispersed in a fluid medium; (b) dispensing and depositing the dispersion onto a surface of a supporting substrate to form a layer of GO, wherein the dispensing and depositing procedure includes subjecting the dispersion to an orientation-inducing stress; (c) removing the fluid medium to form a dried layer of GO having an inter-plane spacing d002 of 0.4 nm to 1.2 nm; (d) slicing the dried layer of GO into multiple pieces of dried GO and stacking at least two pieces of dried GO to form a mass of multiple pieces of GO; and (f) heat treating the mass under an optional first compressive stress to produce the highly oriented graphene structure at a first heat treatment temperature higher than 100° C. to an extent that an inter-plane spacing d002 is decreased to a value less than 0.4 nm.

摘要翻译： 一种用于制造块体高取向石墨烯结构的方法，包括：（a）制备分散在流体介质中的具有氧化石墨烯（GO）片的石墨烯氧化物分散体; （b）将分散体分配并沉积到支撑基底的表面上以形成一层GO，其中分配和沉积步骤包括使分散体经受定向诱导应力; （c）去除流体介质以形成具有0.4nm至1.2nm的平面间距d002的GO干燥层; （d）将干燥的GO层切成多个干燥的GO，并堆叠至少两片干燥的GO以形成多个GO块; 和（f）在任选的第一压缩应力下热处理所述材料，以在高于100℃的第一热处理温度下产生高度取向的石墨烯结构，使得平面间距d002减小到小于 0.4nm。

公开(公告)号：US20150064575A1

公开(公告)日：2015-03-05

申请号：US13987785

申请日：2013-09-03

申请人： Hui He ,  Bor Z. Jang ,  Yanbo Wang ,  Aruna Zhamu

发明人： Hui He ,  Bor Z. Jang ,  Yanbo Wang ,  Aruna Zhamu

IPC分类号： H01M10/0568 ,  H01M10/052

CPC分类号： H01M10/0568 ,  H01M4/38 ,  H01M4/625 ,  H01M10/052 ,  H01M10/0569 ,  Y02T10/7011

摘要： A rechargeable lithium-selenium cell comprising a cathode having a cathode active material selected from Se or SexSy (x/y ratio=0.01 to 100), an anode having an anode active material, a porous separator electronically separating the anode and the cathode, a non-flammable quasi-solid electrolyte in contact with the cathode and the anode, wherein the electrolyte contains a lithium salt dissolved in a first organic liquid solvent with a lithium salt concentration sufficiently high (at least 2.0 M, more preferably >3.0 M) so that the electrolyte exhibits a vapor pressure less than 0.01 kPa when measured at 20° C., a flash point at least 20 degrees Celsius higher than the flash point of the first organic liquid solvent alone, a flash point higher than 150° C., or no flash point. This battery cell is non-flammable and safe, has a long cycle life, high capacity, and high energy density.

摘要翻译： 一种可再充电锂硒电池，其特征在于，具有阴极，所述阴极具有选自Se或SexSy的阴极活性物质（x / y比= 0.01〜100），具有负极活性物质的阳极，电解阳极和阴极的多孔隔膜， 与阴极和阳极接触的非易燃准固体电解质，其中电解质含有溶解在锂盐浓度足够高（至少2.0M，更优选> 3.0M）的第一有机液体溶剂中的锂盐，因此 当在20℃下测量时，电解质表现出小于0.01kPa的蒸气压，闪点比单独的第一有机液体溶剂的闪点高至少20摄氏度，闪点高于150℃， 或没有闪点。 该电池不易燃，安全，循环寿命长，容量大，能量密度高。

公开(公告)号：US20150064574A1

公开(公告)日：2015-03-05

申请号：US13987764

申请日：2013-08-30

申请人： Hui He ,  Bor Z. Jang ,  Yanbo Wang ,  Aruna Zhamu

发明人： Hui He ,  Bor Z. Jang ,  Yanbo Wang ,  Aruna Zhamu

IPC分类号： H01M10/0568 ,  H01M10/05

CPC分类号： H01M10/0568 ,  H01M4/40 ,  H01M4/405 ,  H01M4/587 ,  H01M10/05 ,  H01M10/054 ,  H01M10/0569

摘要： A non-flammable quasi-solid electrolyte and a rechargeable non-lithium alkali metal cell containing this electrolyte. The electrolyte comprises an alkali metal salt dissolved in an organic liquid solvent with a concentration higher than 2.5 M (preferably >3.5 M) or a molecular ratio greater than 0.2 (preferably >0.3), wherein the alkali metal is selected from Na, K, a combination of Na and K, or a combination of Na and/or K with Li. The alkali metal salt concentration is sufficiently high so that the electrolyte exhibits a vapor pressure

公开(公告)号：US20150044564A1

公开(公告)日：2015-02-12

申请号：US13987565

申请日：2013-08-08

申请人： Yanbo Wang ,  Bor Z. Jang ,  Hui He ,  Aruna Zhamu

发明人： Yanbo Wang ,  Bor Z. Jang ,  Hui He ,  Aruna Zhamu

IPC分类号： H01M4/36 ,  H01M4/04

CPC分类号： H01M4/366 ,  H01M4/0421 ,  H01M4/133 ,  H01M4/134 ,  H01M4/1393 ,  H01M4/1395 ,  H01M4/386 ,  H01M4/587 ,  H01M10/0525 ,  H01M2004/027 ,  Y02T10/7011

摘要： The present invention provides an anode electrode of a lithium-ion battery, comprising an anode active material-coated graphene sheet, wherein the graphene sheet has two opposed parallel surfaces and at least 50% area of one of the surfaces is coated with an anode active material and wherein the graphene material is in an amount of from 0.1% to 99.5% by weight and the anode active material is in an amount of at least 0.5% by weight (preferably at least 60%), all based on the total weight of the graphene material and the anode active material combined.

摘要翻译： 本发明提供一种锂离子电池的阳极电极，其包括阳极活性材料涂覆的石墨烯片，其中所述石墨烯片具有两个相对的平行表面，并且其中一个表面的至少50％面积涂覆有阳极活性物质 材料，其中所述石墨烯材料的量为0.1重量％至99.5重量％，并且所述负极活性物质的量为至少0.5重量％（优选至少60重量％），均基于 石墨烯材料和阳极活性材料组合。

公开(公告)号：US20150024121A1

公开(公告)日：2015-01-22

申请号：US13987396

申请日：2013-07-22

申请人： Hui He ,  Bor Z. Jang ,  Yanbo Wang ,  Aruna Zhamu

发明人： Hui He ,  Bor Z. Jang ,  Yanbo Wang ,  Aruna Zhamu

IPC分类号： H01M10/0566 ,  H01M10/0568 ,  H01M2/14 ,  H01M10/0569

CPC分类号： H01M10/0566 ,  H01M2/145 ,  H01M2/162 ,  H01M10/0568 ,  H01M10/0569 ,  H01M2300/0025 ,  H01M2300/0028

摘要： A process for producing a separator-electrolyte layer for use in a lithium battery, comprising: (a) providing a porous separator; (b) providing a quasi-solid electrolyte containing a lithium salt dissolved in a first liquid solvent up to a first concentration no less than 3 M; and (c) coating or impregnating the separator with the electrolyte to obtain the separator-electrolyte layer with a final concentration ≧the first concentration so that the electrolyte exhibits a vapor pressure less than 0.01 kPa when measured at 20° C., a vapor pressure less than 60% of that of the first liquid solvent alone, a flash point at least 20 degrees Celsius higher than a flash point of the first liquid solvent alone, a flash point higher than 150° C., or no detectable flash point. A battery using such a separator-electrolyte is non-flammable and safe, has a long cycle life, high capacity, and high energy density.

摘要翻译： 一种用于生产用于锂电池的隔板 - 电解质层的方法，包括：（a）提供多孔隔板; （b）提供含有溶解在第一液体溶剂中的锂盐的准固态电解质，其浓度不低于3M; 和（c）用电解质涂覆或浸渍隔膜，以获得最终浓度≧第一浓度的隔板 - 电解质层，使得当在20℃下测量时，电解质的蒸气压小于0.01kPa，蒸气压 小于第一液体溶剂的60％，闪点比单独的第一液体溶剂的闪点高至少20摄氏度，闪点高于150℃，或没有可检测到的闪点。 使用这种隔膜 - 电解质的电池是不可燃和安全的，具有长的循环寿命，高容量和高能量密度。

公开(公告)号：US20130330611A1

公开(公告)日：2013-12-12

申请号：US13507168

申请日：2012-06-11

申请人： Gourong Chen ,  Yanbo Wang ,  Aruna Zhamu ,  Bor Z. Jang

发明人： Gourong Chen ,  Yanbo Wang ,  Aruna Zhamu ,  Bor Z. Jang

IPC分类号： H01M4/60 ,  H01M4/583 ,  H01M4/64 ,  B82Y30/00

CPC分类号： H01M4/137 ,  B82Y30/00 ,  H01M4/1399 ,  H01M4/608 ,  H01M4/625 ,  H01M4/762 ,  H01M10/052 ,  Y02E60/122

摘要： A rechargeable lithium cell comprising: (a) an anode comprising a prelithiated lithium storage material or a combination of a lithium storage material and a lithium ion source; (b) a hybrid cathode active material composed of a meso-porous structure of a carbon, graphite, metal, or conductive polymer and a phthalocyanine compound, wherein the meso-porous structure is in an amount of from 1% to 99% by weight based on the total weight of the meso-porous structure and the phthalocyanine combined, and wherein the meso-porous structure has a pore with a size from 2 nm to 50 nm to accommodate phthalocyanine compound therein; and (c) an electrolyte or electrolyte/separator assembly. This secondary cell exhibits a long cycle life and the best cathode specific capacity and best cell-level specific energy of all rechargeable lithium-ion cells ever reported.

公开(公告)号：US09437344B2

公开(公告)日：2016-09-06

申请号：US12804413

申请日：2010-07-22

申请人： Aruna Zhamu ,  Jinjun Shi ,  Guorong Chen ,  Qing Fang ,  Bor Z. Jang ,  Ming C. Wang

发明人： Aruna Zhamu ,  Jinjun Shi ,  Guorong Chen ,  Qing Fang ,  Bor Z. Jang ,  Ming C. Wang

IPC分类号： B32B9/00 ,  H01B1/12 ,  C01B31/04 ,  H01M4/133 ,  H01M4/587 ,  H01M10/0525

CPC分类号： H01B1/122 ,  C01B32/20 ,  H01M4/133 ,  H01M4/587 ,  H01M10/0525 ,  Y02T10/7011 ,  Y10T428/30

摘要： This invention provides a graphite or graphite-carbon particulate for use as a lithium secondary battery anode material having a high-rate capability. The particulate is formed of a core carbon or graphite particle and a plurality of satellite carbon or graphite particles that are each separately bonded to the core particle wherein the core particle is spherical in shape, slightly elongate in shape with a major axis-to-minor axis ratio less than 2, or fibril in shape, and wherein the satellite particles are disc-, platelet-, or flake-like particles each containing a graphite crystallite with a crystallographic c-axis dimension Lc and a lateral dimension. Preferably, Lc is less than 100 nm and the flake/platelet lateral dimension is less than 1 μm. The core particle may be selected from natural graphite, artificial graphite, spherical graphite, graphitic coke, meso-carbon micro-bead, soft carbon, hard carbon, graphitic fibril, carbon nano-fiber, carbon fiber, or graphite fiber. Preferably, the flat-shaped particles are randomly oriented with respect to one another.

摘要翻译： 本发明提供一种用作具有高速率能力的锂二次电池负极材料的石墨或石墨 - 碳颗粒。 颗粒由芯碳或石墨颗粒和多个卫星碳或石墨颗粒形成，每个卫星碳或石墨颗粒分别与核心颗粒结合，其中核心颗粒是球形的，具有略长的形状，具有长轴对次要的 轴比小于2，或原纤维形状，并且其中卫星颗粒是盘状，片状或片状颗粒，每个颗粒含有具有晶体c轴尺寸Lc和横向尺寸的石墨微晶。 优选地，Lc小于100nm，片/横板尺寸小于1μm。 核心颗粒可以选自天然石墨，人造石墨，球形石墨，石墨焦炭，内消旋碳微珠，软碳，硬碳，石墨原纤，碳纳米纤维，碳纤维或石墨纤维。 优选地，扁平形颗粒相对于彼此是随机取向的。