公开(公告)号：US10971281B2

公开(公告)日：2021-04-06

申请号：US16200941

申请日：2018-11-27

申请人： Yi-jun Lin ,  Bor Z. Jang

发明人： Yi-jun Lin ,  Bor Z. Jang

IPC分类号： H01B1/18 ,  C08K3/04 ,  C08K9/04 ,  H01B13/00 ,  C08J3/20

摘要： A polymer matrix composite containing graphene sheets homogeneously dispersed in a polymer matrix wherein the polymer matrix composite exhibits a percolation threshold from 0.0001% to 0.1% by volume of graphene sheets to form a 3D network of interconnected graphene sheets or network of electron-conducting pathways.

公开(公告)号：US20170233255A1

公开(公告)日：2017-08-17

申请号：US14998784

申请日：2016-02-17

申请人： Aruna Zhamu ,  Bor Z. Jang

发明人： Aruna Zhamu ,  Bor Z. Jang

IPC分类号： C01B31/04 ,  C25B3/00

CPC分类号： C25B3/00 ,  B82Y30/00 ,  B82Y40/00 ,  C01B32/19 ,  C01B2204/02 ,  C01B2204/04 ,  Y10S977/734 ,  Y10S977/842 ,  Y10S977/845

摘要： A method of producing isolated graphene sheets from a layered graphite, comprising: (a) forming an alkali metal ion-intercalated graphite compound by an electrochemical intercalation which uses a liquid solution of an alkali metal salt dissolved in an organic solvent as both an electrolyte and an intercalate source, layered graphite material as an anode material, and a metal or graphite as a cathode material, and wherein a current is imposed upon a cathode and an anode at a current density for a duration of time sufficient for effecting the electrochemical intercalation of alkali metal ions into interlayer spacing; and (b) exfoliating and separating hexagonal carbon atomic interlayers (graphene planes) from the alkali metal ion-intercalated graphite compound using ultrasonication, thermal shock exposure, exposure to water solution, mechanical shearing treatment, or a combination thereof to produce isolated graphene sheets.

公开(公告)号：US09735445B2

公开(公告)日：2017-08-15

申请号：US14756510

申请日：2015-09-14

申请人： Aruna Zhamu ,  Bor Z Jang

发明人： Aruna Zhamu ,  Bor Z Jang

IPC分类号： H01M10/054 ,  H01M10/0568 ,  H01M10/0569 ,  H01M4/38 ,  H01M4/485 ,  H01M4/505 ,  H01M4/58 ,  H01M4/583 ,  H01M4/587 ,  H01M4/60 ,  H01M4/80

CPC分类号： H01M10/054 ,  H01M4/38 ,  H01M4/485 ,  H01M4/505 ,  H01M4/5815 ,  H01M4/5825 ,  H01M4/583 ,  H01M4/587 ,  H01M4/60 ,  H01M4/80 ,  H01M4/808 ,  H01M10/0568 ,  H01M10/0569

摘要： Provided is an alkali metal-ion battery, comprising: (a) an anode having an anode active material dispersed in a first liquid electrolyte disposed in pores of a 3D porous anode current collector having at least 80% by volume of pores; (b) a cathode having a cathode active material dispersed in a second liquid electrolyte disposed in pores of a 3D porous cathode current collector wherein the cathode thickness-to-current collector thickness ratio is from 0.8/1 to 1/0.8; (c) a separator disposed between the anode and the cathode; wherein the anode or cathode active material loading is greater than 10 mg/cm2, the anode and cathode active materials combined exceeds 40% by weight of the battery, and/or the 3D porous anode and/or cathode current collector has a thickness no less than 200 μm (preferably greater than 500 μm and more preferably greater than 700 μm) and is in physical contact with the separator.

公开(公告)号：US20170221643A1

公开(公告)日：2017-08-03

申请号：US14998672

申请日：2016-02-01

申请人： Aruna Zhamu ,  Bor Z. Jang

发明人： Aruna Zhamu ,  Bor Z. Jang

IPC分类号： H01G11/34 ,  B32B37/10 ,  H01G11/38 ,  H01G11/52 ,  H01G11/66 ,  B32B37/14 ,  B32B38/00

CPC分类号： H01G11/34 ,  B32B37/10 ,  B32B37/14 ,  B32B38/0004 ,  B32B2457/16 ,  H01G11/26 ,  H01G11/32 ,  H01G11/38 ,  H01G11/42 ,  H01G11/44 ,  H01G11/52 ,  H01G11/66 ,  H01G11/84 ,  H01G11/86 ,  Y02E60/13

摘要： Provided is a process for producing an electrolyte-impregnated laminar graphene structure for use as a supercapacitor electrode. The process comprises (a) preparing a graphene dispersion having multiple isolated graphene sheets dispersed in an electrolyte; and (b) subjecting the graphene dispersion to a forced assembly procedure, forcing the multiple graphene sheets to assemble into an electrolyte-impregnated laminar graphene structure, wherein the multiple graphene sheets are alternately spaced by thin electrolyte layers, less than 5 nm in thickness, and the graphene sheets are substantially aligned along a desired direction, and wherein the laminar structure has a physical density from 0.5 to 1.7 g/cm3 and a specific surface area from 50 to 3,300 m2/g, when measured in a dried state of the laminar structure with the electrolyte removed. This process leads to a supercapacitor having a large electrode thickness, high active mass loading, high tap density, and exceptional energy density.

公开(公告)号：US20170200565A1

公开(公告)日：2017-07-13

申请号：US14998475

申请日：2016-01-11

申请人： Aruna Zhamu ,  Bor Z Jang

发明人： Aruna Zhamu ,  Bor Z Jang

IPC分类号： H01G11/32 ,  H01G11/06 ,  H01G11/48 ,  H01G11/58 ,  H01G11/26 ,  H01G11/46

CPC分类号： H01G11/32 ,  C01B32/184 ,  C01B32/194 ,  C01B2204/22 ,  C01B2204/24 ,  C01B2204/32 ,  H01G11/02 ,  H01G11/06 ,  H01G11/26 ,  H01G11/36 ,  H01G11/38 ,  H01G11/46 ,  H01G11/48 ,  H01G11/70 ,  Y02E60/13

摘要： A supercapacitor electrode comprising a solid graphene foam impregnated with a liquid or gel electrolyte, wherein the solid graphene foam is composed of multiple pores and pore walls, wherein pore walls contain a pristine graphene material having essentially zero % of non-carbon elements, or a non-pristine graphene material having 0.001% to 5% by weight of non-carbon elements wherein non-pristine graphene is selected from graphene oxide, reduced graphene oxide, graphene fluoride, graphene chloride, graphene bromide, graphene iodide, hydrogenated graphene, nitrogenated graphene, chemically functionalized graphene, or a combination thereof, and the solid graphene foam, when measured in a dried state without electrolyte, has a physical density from 0.01 to 1.7 g/cm3, a specific surface area from 50 to 3,200 m2/g, a thermal conductivity of at least 200 W/mK per unit of specific gravity, and/or an electrical conductivity no less than 2,000 S/cm per unit of specific gravity.

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：US09601805B2

公开(公告)日：2017-03-21

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： H01M2/16 ,  H01M10/056 ,  H01M10/0566 ,  H01M2/14 ,  H01M10/0569 ,  H01M10/0568

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.

公开(公告)号：US09564656B1

公开(公告)日：2017-02-07

申请号：US14756509

申请日：2015-09-14

申请人： Aruna Zhamu ,  Bor Z Jang

发明人： Aruna Zhamu ,  Bor Z Jang

IPC分类号： H01M10/054 ,  H01M10/04

CPC分类号： H01M10/054 ,  H01M4/366 ,  H01M4/505 ,  H01M4/5815 ,  H01M4/5825 ,  H01M4/5835 ,  H01M4/587 ,  H01M4/60 ,  H01M4/625 ,  H01M4/661 ,  H01M4/663 ,  H01M4/808 ,  H01M6/16 ,  H01M10/058

摘要： Provided is a process for producing an alkali metal battery, comprising: (A) Preparing an anode material suspension and a cathode active material suspension; (B) Assembling a porous cell framework composed of a first conductive foam structure, a second conductive foam structure, and a porous separator disposed between said first and said second conductive foam structure; and (C) Injecting the anode suspension into pores of the first conductive foam structure to form an anode and injecting cathode suspension into pores of the second conductive foam structure to form a cathode, wherein the anode active material has a material mass loading no less than 20 mg/cm2 or the cathode active material has a material mass loading no less than 15 mg/cm2 for an organic or polymer material or no less than 40 mg/cm2 for an inorganic material. The resulting batteries exhibit exceptional gravimetric and volumetric energy densities and long cycle life.

摘要翻译： 提供一种碱金属电池的制造方法，其特征在于，包括：（A）制备负极材料悬浮液和正极活性物质悬浮液; （B）组装由第一导电泡沫结构，第二导电泡沫结构和布置在所述第一和所述第二导电泡沫结构之间的多孔隔板组成的多孔电池框架; 和（C）将阳极悬浮液注入到第一导电泡沫结构的孔中以形成阳极并将阴极悬浮液注入到第二导电泡沫结构的孔中以形成阴极，其中阳极活性材料的材料质量载荷不小于 对于有机或聚合物材料，阴极活性材料的材料质量载荷不低于15mg / cm 2，或者对于无机材料，材料质量载荷不小于40mg / cm 2。 所得的电池表现出优异的重量和体积能量密度和较长的循环寿命。