Supercapacitor having an integral 3D graphene-carbon hybrid foam-based electrode

    公开(公告)号:US20170194105A1

    公开(公告)日:2017-07-06

    申请号:US14998412

    申请日:2016-01-04

    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.

    Process for Producing Unitary Graphene Matrix Composites Containing Carbon or Graphite Fillers

    公开(公告)号:US20170114263A1

    公开(公告)日:2017-04-27

    申请号:US14756852

    申请日:2015-10-22

    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.

    Process for producing alkali metal or alkali-ion batteries having high volumetric and gravimetric energy densities
    115.
    发明授权
    Process for producing alkali metal or alkali-ion batteries having high volumetric and gravimetric energy densities 有权
    制备具有高体积和重量能量密度的碱金属或碱金属离子电池的方法

    公开(公告)号:US09564656B1

    公开(公告)日:2017-02-07

    申请号:US14756509

    申请日:2015-09-14

    IPC分类号: H01M10/054 H01M10/04

    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。

    Production of highly oriented graphene oxide films and graphitic films derived therefrom
    116.
    发明申请
    Production of highly oriented graphene oxide films and graphitic films derived therefrom 有权
    生产高度取向的石墨烯氧化物膜和由其衍生的石墨膜

    公开(公告)号:US20170021387A1

    公开(公告)日:2017-01-26

    申请号:US14756006

    申请日:2015-07-20

    摘要: A process for producing a highly oriented graphene oxide (GO) film, comprising: (a) preparing either a GO dispersion having GO sheets dispersed in a fluid medium or a GO gel having GO molecules dissolved in a fluid medium; (b) dispensing the GO dispersion or gel onto a surface of an application roller rotating in a first direction to form an applicator layer of GO and transferring the applicator layer to a surface of a supporting film driven in a second direction opposite to the first direction to form a wet layer of GO on the supporting film; and (c) removing said fluid medium from the wet layer of GO to form a dried layer of GO having an inter-planar spacing d002 of 0.4 nm to 1.2 nm and an oxygen content no less than 5% by weight. This dried GO layer may be heat-treated to produce a graphitic film.

    摘要翻译: 一种制备高取向氧化石墨(GO)膜的方法,包括:(a)制备具有分散在流体介质中的GO片的GO分散体或具有溶解在流体介质中的GO分子的GO凝胶; (b)将GO分散体或凝胶分配到沿第一方向旋转的施加辊的表面上,以形成GO的施用层,并将施加器层转移到沿与第一方向相反的第二方向驱动的支撑膜的表面 在支撑膜上形成GO的湿层; 和(c)从GO的湿层去除所述流体介质以形成具有0.4nm至1.2nm的平坦间距d002和氧含量不小于5%重量的GO的干燥层。 该干燥的GO层可以被热处理以产生石墨膜。

    Process for producing highly conducting and transparent films from graphene oxide-metal nanowire hybrid materials
    117.
    发明授权
    Process for producing highly conducting and transparent films from graphene oxide-metal nanowire hybrid materials 有权
    由氧化石墨烯 - 金属纳米线混合材料制备高导电和透明薄膜的方法

    公开(公告)号:US09530531B2

    公开(公告)日:2016-12-27

    申请号:US13815317

    申请日:2013-02-21

    摘要: A process for producing a transparent conductive film, comprising (a) providing a graphene oxide gel; (b) dispersing metal nanowires in the graphene oxide gel to form a suspension; (c) dispensing and depositing the suspension onto a substrate; and (d) removing the liquid medium to form the film. The film is composed of metal nanowires and graphene oxide with a metal nanowire-to-graphene oxide weight ratio from 1/99 to 99/1, wherein the metal nanowires contain no surface-borne metal oxide or metal compound 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: 一种制造透明导电膜的方法,包括(a)提供石墨烯氧化物凝胶; (b)将金属纳米线分散在氧化石墨烯凝胶中以形成悬浮液; (c)将悬浮液分配并沉积到基底上; 和(d)除去液体介质以形成膜。 该膜由金属纳米线和氧化石墨烯组成,金属纳米线对石墨烯氧化物的重量比为1/99至99/1,其中金属纳米线不含表面金属氧化物或金属化合物,并且该膜表现出光学 透明度不低于80%,薄片电阻不高于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。

    Highly Conductive Graphitic Films
    118.
    发明申请
    Highly Conductive Graphitic Films 有权
    高导电性石墨膜

    公开(公告)号:US20160358686A1

    公开(公告)日:2016-12-08

    申请号:US15170387

    申请日:2016-06-01

    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。

    Alkali Metal Secondary Battery Containing a Carbon Matrix- or Carbon Matrix Composite-based Dendrite-Intercepting Layer
    119.
    发明申请
    Alkali Metal Secondary Battery Containing a Carbon Matrix- or Carbon Matrix Composite-based Dendrite-Intercepting Layer 有权
    含有碳基或碳基复合材料的树枝状截留层的碱金属二次电池

    公开(公告)号:US20160344035A1

    公开(公告)日:2016-11-24

    申请号:US14545553

    申请日:2015-05-21

    摘要: A rechargeable alkali metal battery comprising: (a) an anode comprising an alkali metal layer and a dendrite penetration-resistant layer comprising an amorphous carbon or polymeric carbon matrix, an optional carbon or graphite reinforcement phase dispersed in this matrix, and a lithium- or sodium-containing species that are chemically bonded to the matrix and/or the optional carbon or graphite reinforcement to form an integral layer that prevents dendrite penetration, wherein the lithium- or sodium-containing species is selected from Li2CO3, Li2O, Li2C2O4, LiOH, LiX, ROCO2Li, HCOLi, ROLi, (ROCO2Li)2, (CH2OCO2Li)2, Li2S, LixSOy, Na2CO3, Na2O, Na2C2O4, NaOH, NaiX, ROCO2Na, HCONa, RONa, (ROCO2Na)2, (CH2OCO2Na)2, Na2S, NaxSOy, or a combination thereof, wherein X═F, Cl, I, or Br, R=a hydrocarbon group, x=0-1, y=1-4; (b) a cathode; and (c) a separator and electrolyte component; wherein the dendrite penetration-resistant layer is disposed between the alkali metal layer and the separator.

    摘要翻译: 一种可再充电碱金属电池,包括:(a)阳极,其包含碱金属层和包含无定形碳或聚合碳基体的枝晶防渗层,分散在该基质中的任选的碳或石墨增强相,以及锂或 化学键合到基质和/或任选的碳或石墨增强物上以形成防止枝晶渗透的整体层的含钠物质,其中所述含锂或钠的物质选自Li 2 CO 3,Li 2 O,Li 2 C 2 O 4,LiOH, (ROCO2Li)2,(CH2OCO2Li)2,Li2S,LixSOy,Na2CO3,Na2O,Na2C2O4,NaOH,NaiX,ROCO2Na,HCONa,RONa,(ROCO2Na)2,(CH2OCO2Na) NaxSOy或其组合,其中X = F,Cl,I或Br,R =烃基,x = 0-1,y = 1-4; (b)阴极; 和(c)分离器和电解质组分; 其中枝晶耐渗层设置在碱金属层和隔板之间。

    Partially and fully surface-enabled transition metal ion-exchanging energy storage devices
    120.
    发明申请
    Partially and fully surface-enabled transition metal ion-exchanging energy storage devices 审中-公开
    部分和完全表面使能的过渡金属离子交换储能装置

    公开(公告)号:US20160293954A1

    公开(公告)日:2016-10-06

    申请号:US14545126

    申请日:2015-03-30

    摘要: A surface-enabled, metal ion-exchanging battery device comprising a cathode, an anode, a porous separator, and a metal ion-containing electrolyte, wherein the metal ion is selected from transition metals and at least one of the electrodes contains therein a metal ion source prior to the first charge or discharge cycle of the device and at least the cathode comprises a functional material or nano-structured material having a metal ion-capturing functional group or metal ion-storing surface in direct contact with the electrolyte. This energy storage device has a power density significantly higher than that of a lithium-ion battery and an energy density dramatically higher than that of a supercapacitor.

    摘要翻译: 一种表面使能的金属离子交换电池装置,包括阴极,阳极,多孔隔板和含金属离子的电解质,其中金属离子选自过渡金属,并且至少一个电极在其中含有金属 离子源在装置的第一充电或放电循环之前,并且至少阴极包括具有与电解质直接接触的金属离子捕获官能团或金属离子存储表面的功能材料或纳米结构材料。 该能量存储装置的功率密度显着高于锂离子电池的功率密度,能量密度显着高于超级电容器。