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    Production of highly conductive graphitic films from polymer films
    31.
    发明申请
    Production of highly conductive graphitic films from polymer films 审中-公开
    从聚合物薄膜生产高导电性石墨膜

    公开(公告)号：US20160059444A1

    公开(公告)日：2016-03-03

    申请号：US14121387

    申请日：2014-08-29

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

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

    IPC分类号： B29C35/02 ,  C01B31/04

    CPC分类号： C01B31/04 ,  C01B32/20 ,  C01P2006/10 ,  C01P2006/32 ,  C01P2006/40

    摘要： A one-step (direct graphitization) process for producing a graphitic film, comprising directly feeding a precursor polymer film, without going through a carbonization step, to a graphitization zone preset at a graphitization temperature no less than 2,200° C. for a period of residence time sufficient for converting the precursor polymer film to a porous graphitic film having a density from 0.1 g/cm3 to 1.5 g/cm3 and retreating the porous graphitic film from the graphitization zone. Preferably, the precursor polymer film is selected from the group consisting of polyimide, polyamide, phenolic resin, polyoxadiazole, polybenzoxazole, polybenzobisoxazole, polythiazole, polybenzothiazole, polybenzobisthiazole, poly(p-phenylene vinylene), polybenzimidazole, polybenzobisimidazole, polyacrylonitrile, and combinations thereof. Preferably, the precursor polymer film contains an amount of graphene sheets or expanded graphite flakes, preferably from 1% to 90% by weight, sufficient for promoting or accelerating graphitization.

    摘要翻译： 用于生产石墨膜的一步（直接石墨化）方法，包括直接将前体聚合物膜直接进料到不经过碳化步骤的石墨化区域，石墨化区域以石墨化温度不低于2200℃预设一段时间 将前体聚合物膜转化为密度为0.1g / cm 3至1.5g / cm 3的多孔石墨膜，并从石墨化区域中回收多孔石墨膜的足够的停留时间。 优选地，前体聚合物膜选自聚酰亚胺，聚酰胺，酚醛树脂，聚恶二唑，聚苯并恶唑，聚苯并双恶唑，聚噻唑，聚苯并噻唑，聚苯并二噻唑，聚（对亚苯基亚乙烯基），聚苯并咪唑，聚苯并双咪唑，聚丙烯腈及其组合。 优选地，前体聚合物膜含有足以促进或加速石墨化的量的石墨烯片或膨胀石墨片，优选为1重量％至90重量％。

    Cathode active material-coated discrete graphene sheets for lithium batteries and process for producing same
    33.
    发明申请
    Cathode active material-coated discrete graphene sheets for lithium batteries and process for producing same 有权
    用于锂电池的阴极活性材料涂层离散石墨烯片及其制造方法

    公开(公告)号：US20150044556A1

    公开(公告)日：2015-02-12

    申请号：US13987567

    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 ,  H01M4/04 ,  H01M4/0421 ,  H01M4/13 ,  H01M4/139 ,  H01M4/625 ,  H01M10/056 ,  H01M2004/028 ,  Y10T156/1075

    摘要： The present invention provides a cathode (positive electrode) of a lithium battery and a process for producing this cathode. The electrode comprises a cathode active material-coated graphene sheet and the graphene sheet has two opposed parallel surfaces, wherein at least 50% area (preferably >80%) of one of the two surfaces is coated with a cathode active material coating. The graphene material is in an amount of from 0.1% to 99.5% by weight and the cathode active material is in an amount of at least 0.5% by weight (preferably >80% and more preferably >90%), all based on the total weight of the graphene material and the cathode active material combined. The cathode active material is preferably an inorganic material, an organic or polymeric material, a metal oxide/phosphate/sulfide, or a combination thereof. The invention also provides a lithium battery, including a lithium-ion, lithium-metal, or lithium-sulfur battery.

    摘要翻译： 本发明提供锂电池的阴极（正电极）及其制造方法。 电极包括阴极活性材料涂覆的石墨烯片，并且石墨烯片具有两个相对的平行表面，其中两个表面中的一个表面的至少50％面积（优选> 80％）涂覆有阴极活性材料涂层。 石墨烯材料的量为0.1重量％至99.5重量％，正极活性物质的量为至少0.5重量％（优选> 80重量％，更优选> 90重量％），均基于总量 石墨烯材料和阴极活性材料的重量相结合。 阴极活性材料优选为无机材料，有机或聚合材料，金属氧化物/磷酸盐/硫化物或其组合。 本发明还提供一种锂电池，其包括锂离子，锂金属或锂硫电池。

    Non-flammable quasi-solid electrolyte-separator layer product for lithium battery applications
    34.
    发明申请
    Non-flammable quasi-solid electrolyte-separator layer product for lithium battery applications 有权
    用于锂电池应用的非易燃准固体电解质分离器层产品

    公开(公告)号：US20150024248A1

    公开(公告)日：2015-01-22

    申请号：US13987394

    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： H01M2/16 ,  H01M10/056

    CPC分类号： H01M10/056 ,  H01M2/1606 ,  H01M10/052 ,  H01M10/0568 ,  H01M2300/0045 ,  H01M2300/0094 ,  Y02P70/54 ,  Y02T10/7011

    摘要： A separator-electrolyte layer product for use in a lithium battery, comprising: (a) a porous thin-film separator selected from a porous polymer film, a porous mat, fabric, or paper made of polymer or glass fibers, or a combination thereof, wherein the separator has a thickness less than 500 μm; and (b) a non-flammable quasi-solid electrolyte containing a lithium salt dissolved in a liquid solvent up to a concentration no less than 3 M; wherein the porous thin-film separator is coated with the quasi-solid electrolyte so that the layer product exhibits a vapor pressure less than 0.01 kPa when measured at 20° C., a vapor pressure less than 60% of the vapor pressure of the 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.

    摘要翻译： 一种用于锂电池的隔膜 - 电解质层产品，包括：（a）选自多孔聚合物膜，多孔垫，织物或由聚合物或玻璃纤维制成的纸的多孔薄膜隔膜，或其组合 其中所述隔板的厚度小于500μm; 和（b）含有溶解在液体溶剂中的锂盐的不易燃准固态电解质，其浓度不低于3M; 其中所述多孔薄膜分离器涂覆有准固体电解质，使得当在20℃下测量时，所述层产物的蒸气压小于0.01kPa，蒸气压小于液体的蒸气压的60％ 溶剂，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℃，或没有可检测的闪点。

    Lithium secondary batteries containing non-flammable quasi-solid electrolyte
    35.
    发明申请
    Lithium secondary batteries containing non-flammable quasi-solid electrolyte 有权
    锂二次电池含有不易燃的准固体电解质

    公开(公告)号：US20140363746A1

    公开(公告)日：2014-12-11

    申请号：US13986814

    申请日：2013-06-10

    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： H01M10/056 ,  H01M10/052

    CPC分类号： H01M10/052 ,  H01M4/136 ,  H01M4/5825 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569 ,  H01M12/08 ,  H01M2004/028 ,  H01M2300/0028 ,  Y02E60/122 ,  Y02E60/128 ,  Y02T10/7011

    摘要： A rechargeable lithium cell comprising a cathode having a cathode active material, 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 concentration sufficiently high 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： 一种可再充电锂电池，包括具有阴极活性材料的阴极，具有阳极活性材料的阳极，电子分离阳极和阴极的多孔隔板，与阴极和阳极接触的不可燃的准固体电解质，其中 电解质含有溶解在浓度足够高的第一有机液体溶剂中的锂盐，使得当在20℃下测量时，电解质的蒸汽压力低于0.01kPa，闪点高于闪光灯的至少20摄氏度 第一有机液体溶剂点，闪点高于150℃，或无闪点。 该电池不易燃，安全，循环寿命长，容量大，能量密度高。

    Large-grain graphene thin film current collector and secondary batteries containing same
    37.
    发明申请
    Large-grain graphene thin film current collector and secondary batteries containing same 有权
    大颗粒石墨烯薄膜集电器和含有相同的二次电池

    公开(公告)号：US20150086881A1

    公开(公告)日：2015-03-26

    申请号：US13987994

    申请日：2013-09-23

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

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

    IPC分类号： H01G11/68 ,  H01M4/66

    CPC分类号： H01G11/68 ,  H01G11/04 ,  H01G11/06 ,  H01G11/36 ,  H01M4/38 ,  H01M4/382 ,  H01M4/5825 ,  H01M4/663 ,  H01M10/052 ,  H01M10/054 ,  H01M10/0568 ,  H01M10/0569 ,  H01M2300/0025 ,  Y02E60/13 ,  Y02T10/7011 ,  Y02T10/7022

    摘要： A unitary graphene-based current collector in a battery or capacitor. The current collector is or contains a unitary graphene layer that is composed of 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 less than 5% by weight (more typically 0.001% to 1%), an average grain size larger than 5 μm (more typically >100 μm; some as large as >cm), a physical density higher than 1.8 g/cm3, and is obtained from heat-treating a graphene oxide gel at a temperature higher than 100° C. (typically and preferably from 1,000 to 3,000° C.). Such an integrated or unitary graphene entity is compatible with essentially all electrolytes commonly used in batteries and supercapacitors.

    摘要翻译： 电池或电容器中的单一石墨烯集电器。 电流收集器是或包含一个单一的石墨烯层，其由具有0.335至0.40nm的石墨烯间距和氧含量小于5重量％（更典型地为0.001％至约3％）的紧密堆积和化学结合的平行石墨烯平面组成 1％），大于5μm的平均粒径（更典型地>100μm，一些大于> cm），物理密度高于1.8g / cm 3，并且通过在氧化石墨烯氧化物凝胶上热处理获得 温度高于100℃（通常且优选为1,000至3,000℃）。 这种集成或单一的石墨烯实体与电池和超级电容器中通常使用的基本上所有的电解质相容。

    Graphene-enhanced cathode materials for lithium batteries
    38.
    发明授权
    Graphene-enhanced cathode materials for lithium batteries 有权
    石墨烯增强锂电池阴极材料

    公开(公告)号：US08691441B2

    公开(公告)日：2014-04-08

    申请号：US12807471

    申请日：2010-09-07

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

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

    IPC分类号： H01M4/583 ,  H01M4/587 ,  B82Y30/00 ,  H01B1/24

    CPC分类号： H01M4/587 ,  B82Y30/00 ,  H01B1/24 ,  H01M4/13 ,  H01M4/139 ,  H01M4/366 ,  H01M4/625 ,  Y02E60/122

    摘要： A nano graphene-enhanced particulate for use as a lithium battery cathode active material, wherein the particulate is formed of a single or a plurality of graphene sheets and a plurality of fine cathode active material particles with a size smaller than 10 μm (preferably sub-micron or nano-scaled), and the graphene sheets and the particles are mutually bonded or agglomerated into an individual discrete particulate with at least a graphene sheet embracing the cathode active material particles, and wherein the particulate has an electrical conductivity no less than 10−4 S/cm and the graphene is in an amount of from 0.01% to 30% by weight based on the total weight of graphene and the cathode active material combined.

    摘要翻译： 一种用作锂电池正极活性材料的纳米石墨烯增强颗粒，其中所述颗粒由单个或多个石墨烯片和多个尺寸小于10μm的精细阴极活性材料颗粒形成（优选地， 微米或纳米级），并且石墨烯片和颗粒与至少包含正极活性物质颗粒的石墨烯片相互结合或附聚到单独的离散颗粒中，并且其中颗粒的导电率不小于10- 4S / cm，并且所述石墨烯的量为基于石墨烯和阴极活性材料的总重量的0.01重量％至30重量％。

    Encapsulated phthalocyanine particles, high-capacity cathode containing these particles, and rechargeable lithium cell containing such a cathode
    39.
    发明申请
    Encapsulated phthalocyanine particles, high-capacity cathode containing these particles, and rechargeable lithium cell containing such a cathode 有权
    封装的酞菁颗粒，含有这些颗粒的高容量阴极和含有这种阴极的可再充电锂电池

    公开(公告)号：US20140072879A1

    公开(公告)日：2014-03-13

    申请号：US13573298

    申请日：2012-09-10

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

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

    IPC分类号： H01M4/60 ,  H01M10/0564 ,  H01M4/583 ,  H01M10/052 ,  H01M10/0525 ,  B82Y30/00

    CPC分类号： H01M4/60 ,  B82Y30/00 ,  H01M4/366 ,  H01M10/0525

    摘要： Disclosed is an electrode material comprising a phthalocyanine compound encapsulated by a protective material, preferably in a core-shell structure with a phthalocyanine compound core and a protective material shell. Also disclosed is a rechargeable lithium cell comprising: (a) an anode; (b) a cathode comprising an encapsulated or protected phthalocyanine compound as a cathode active material; and (c) a porous separator disposed between the anode and the cathode and/or an electrolyte in ionic contact with the anode and the cathode. This secondary cell exhibits a long cycle life, the best cathode specific capacity, and best cell-level specific energy of all rechargeable lithium-ion cells ever reported.

    摘要翻译： 公开了一种电极材料，其包含由保护材料包封的酞菁化合物，优选以具有酞菁化合物芯和保护材料壳的核 - 壳结构。 还公开了一种可再充电锂电池，包括：（a）阳极; （b）包含封装或保护的酞菁化合物作为阴极活性材料的阴极; 和（c）设置在阳极和阴极之间的多孔隔板和/或与阳极和阴极离子接触的电解质。 该二次电池显示出所有可再充电锂离子电池的循环寿命长，最佳阴极比容量和最佳电池级比能。

    Process for producing highly oriented graphene films
    40.
    发明申请
    Process for producing highly oriented graphene films 有权
    生产高取向石墨烯薄膜的方法

    公开(公告)号：US20150218003A1

    公开(公告)日：2015-08-06

    申请号：US13999282

    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： C01B31/04 ,  B29C39/38 ,  B29C43/00 ,  B29C39/00

    CPC分类号： C01B32/19 ,  B29K2105/0061 ,  B29L2007/008 ,  B32B37/24 ,  B32B38/0036 ,  B82Y30/00 ,  B82Y40/00 ,  C01B31/043 ,  C01B32/184 ,  C01B32/192 ,  C01B32/194 ,  C01B2204/04 ,  C01B2204/22 ,  C01B2204/24 ,  C01B2204/26 ,  C09K5/14

    摘要： A process for producing a highly oriented graphene film (HOGF), comprising: (a) preparing a graphene oxide (GO) dispersion having 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 HOGF 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： 一种制备高取向石墨烯膜（HOGF）的方法，包括：（a）制备分散在流体介质中的GO片的氧化石墨烯（GO）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物质，以在高于100℃的第一热处理温度下产生HOGF，使得平面间距d002减小到小于0.4nm的值。