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    • 2. 发明授权
    • Controlled-release vapor fuel cell
    • 控制释放蒸汽燃料电池
    • US08153324B2
    • 2012-04-10
    • US11353463
    • 2006-02-15
    • Lulu SongJiusheng GuoAruna ZhamuBor Z. Jang
    • Lulu SongJiusheng GuoAruna ZhamuBor Z. Jang
    • H01M8/04
    • H01M8/1013H01M8/0258H01M8/0267H01M8/04186H01M8/04201H01M8/1009H01M8/1011H01M8/249Y02E60/522Y02E60/523
    • A controlled-release fuel cell comprising (a) a proton exchange membrane having a first surface and a second surface, a fuel electrode or anode being coupled to the first surface, and an oxidant electrode or cathode being coupled to the second surface; (b) a fuel flow field plate having surface channels positioned in front of the anode with the channels containing therein a controlled-release material that retains a liquid fuel at or below an ambient temperature, but releases the fuel at a temperature higher than an activation temperature to deliver a fuel vapor to the anode; (c) heating means in heat-supplying relation to the controlled-release material to activate fuel vapor release on demand at a desired rate; and (d) fuel supply means that feeds the liquid fuel to the controlled-release material. The invented fuel cell is compact and lightweight, with significantly reduced fuel crossover and improved fuel utilization efficiency. The fuel cell is particularly useful for powering small vehicles and portable devices such as a notebook computer, a personal digital assistant, a mobile phone, and a digital camera.
    • 一种控释燃料电池,包括(a)具有第一表面和第二表面的质子交换膜,连接到第一表面的燃料电极或阳极,以及耦合到第二表面的氧化剂电极或阴极; (b)燃料流场板,其具有位于阳极前面的表面通道,其中通道中含有控制释放材料,其将液体燃料保持在环境温度或低于环境温度,但在比活化温度高的温度下释放燃料 将燃料蒸气输送到阳极的温度; (c)与所述控制释放材料供热关系的加热装置,以期望的速率按要求启动燃料蒸气释放; 和(d)将液体燃料供给到控制释放材料的燃料供给装置。 本发明的燃料电池紧凑且重量轻,燃料交叉显着减少,燃料利用效率得到提高。 燃料电池对于小型车辆和便携式设备如笔记本电脑,个人数字助理,移动电话和数码相机的供电特别有用。
    • 5. 发明授权
    • Nano-scaled graphene plate nanocomposites for supercapacitor electrodes
    • 用于超级电容器电极的纳米级石墨烯纳米复合材料
    • US07623340B1
    • 2009-11-24
    • US11499861
    • 2006-08-07
    • Lulu SongAruna ZhamuJiusheng GuoBor Z. Jang
    • Lulu SongAruna ZhamuJiusheng GuoBor Z. Jang
    • H01G9/00
    • H01G9/058B82Y30/00B82Y40/00C01B32/194C01B2204/04C01B2204/32H01G11/36H01G11/38Y02E60/13Y02T10/7022
    • A preferred embodiment of the present invention is a meso-porous nanocomposite material comprising: (A) nano-scaled graphene platelets, wherein each of the platelets comprises a sheet of graphite plane or multiple sheets of graphite plane, and the platelets have a thickness no greater than 100 nm (preferably smaller than 10 nm) and an average length, width, or diameter no greater than 10 μm (preferably smaller than 500 nm); and (B) an electrically conducting binder or matrix material attached or bonded to the platelets to form the nanocomposite material having liquid accessible pores, which provide a surface area greater than about 100 m2/gm, preferably greater than 500 m2/gm, and most preferably greater than 1000 m2/gm. Also disclosed is a capacitor that includes at least an electrode comprising such a meso-porous nanocomposite material. A supercapacitor featuring such a nanocomposite exhibits an exceptionally high capacitance value.
    • 本发明的优选实施方案是中孔多孔纳米复合材料,其包含:(A)纳米级石墨烯片晶,其中每个片晶包括石墨片片或多片石墨片,并且血小板具有厚度无 大于100nm(优选小于10nm),平均长度,宽度或直径不大于10um(优选小于500nm); 和(B)连接或结合到血小板上以形成具有液体可接近孔的纳米复合材料的导电粘合剂或基质材料,其提供大于约100m 2 / g,优选大于500m 2 / gm的表面积,并且大部分 优选大于1000m2 / gm。 还公开了一种电容器,其至少包括包含这种中孔多孔纳米复合材料的电极。 具有这种纳米复合材料的超级电容器具有非常高的电容值。
    • 6. 发明授权
    • Highly conductive nano-scaled graphene plate nanocomposites
    • 高导电纳米级石墨烯纳米复合材料
    • US07566410B2
    • 2009-07-28
    • US11328880
    • 2006-01-11
    • Lulu SongJiusheng GuoAruna ZhamuBor Z. Jang
    • Lulu SongJiusheng GuoAruna ZhamuBor Z. Jang
    • H01B1/00H01B1/20
    • H01B1/24B82Y30/00H01M4/02H01M8/0213H01M8/0215H01M8/0221H01M8/0223Y10S977/70Y10S977/755Y10S977/773Y10S977/778Y10S977/783
    • Disclosed is a nano-composite material comprising fully separated nano-scaled graphene platelets (NGPs) dispersed in a matrix material, wherein each of the platelets comprises a sheet of graphite plane or multiple sheets of graphite plane and has a thickness no greater than 100 nm and the platelets have an average length, width, or diameter no greater than 500 nm. The graphene plates are present in an amount no less than 15% by weight based on the total weight of the platelets and the matrix material combined. Typically, the nanocomposite is electrically conductive with a bulk conductivity no less than 10 S/cm and more typically no less than 100 S/cm. Highly conductive NGP nanocomposites are particularly useful for fuel cell flow field plate (bipolar plate) and battery electrode applications. Nanocomposites with high NGP proportions can be used in automotive friction plates and aircraft brake components.
    • 公开了一种纳米复合材料,其包含分散在基质材料中的完全分离的纳米级石墨烯片晶(NGP),其中每个片晶包括一片石墨平面或多片石墨平面,其厚度不大于100nm 并且血小板具有不大于500nm的平均长度,宽度或直径。 基于组合的血小板和基质材料的总重量,石墨烯板的存在量不小于15重量%。 通常,纳米复合材料具有不小于10S / cm,更通常不小于100S / cm的体积电导率导电。 高导电性NGP纳米复合材料特别适用于燃料电池流场板(双极板)和电池电极应用。 具有高NGP比例的纳米复合材料可用于汽车摩擦片和飞机制动部件。
    • 8. 发明授权
    • Method of producing exfoliated graphite composite compositions for fuel cell flow field plates
    • 生产燃料电池流场板用剥离石墨复合材料组合物的方法
    • US08691129B2
    • 2014-04-08
    • US11800730
    • 2007-05-08
    • Aruna ZhamuJinjun ShiJiusheng GuoBor Z. Jang
    • Aruna ZhamuJinjun ShiJiusheng GuoBor Z. Jang
    • B29C43/00
    • B22F1/0059B22F2998/10B22F3/02
    • A method of producing an electrically conductive composite composition, which is particularly useful for fuel cell bipolar plate applications. The method comprises: (a) providing a supply of expandable graphite powder; (b) providing a supply of a non-expandable powder component comprising a binder or matrix material; (c) blending the expandable graphite with the non-expandable powder component to form a powder mixture wherein the non-expandable powder component is in the amount of between 3% and 60% by weight based on the total weight of the powder mixture; (d) exposing the powder mixture to a temperature sufficient for exfoliating the expandable graphite to obtain a compressible mixture comprising expanded graphite worms and the non-expandable component; (e) compressing the compressible mixture at a pressure within the range of from about 5 psi to about 50,000 psi in predetermined directions into predetermined forms of cohered graphite composite compact; and (f) treating the so-formed cohered graphite composite to activate the binder or matrix material thereby promoting adhesion within the compact to produce the desired composite composition. Preferably, the non-expandable powder component further comprises an isotropy-promoting agent such as non-expandable graphite particles. Further preferably, step (e) comprises compressing the mixture in at least two directions. The method leads to composite plates with exceptionally high thickness-direction electrical conductivity.
    • 一种制造导电复合材料组合物的方法,其特别适用于燃料电池双极板应用。 该方法包括:(a)提供可膨胀石墨粉的供应; (b)提供包含粘合剂或基质材料的不可膨胀粉末组分的供应; (c)将可膨胀石墨与不可发泡粉末组分混合以形成粉末混合物,其中基于粉末混合物的总重量,不可发泡粉末组分的量为3重量%至60重量%; (d)将粉末混合物暴露于足以剥离可膨胀石墨的温度以获得包含膨胀石墨蠕虫和不可膨胀组分的可压缩混合物; (e)在预定方向上以约5psi至约50,000psi范围内的压力将可压缩混合物压缩成预定形式的粘结石墨复合材料; 和(f)处理如此形成的粘结石墨复合材料以活化粘合剂或基质材料,从而促进压块内的粘合以产生所需的复合组合物。 优选地,不可膨胀粉末组分还包含各向同性促进剂,例如不可膨胀石墨颗粒。 进一步优选地,步骤(e)包括在至少两个方向压缩混合物。 该方法导致具有非常高的厚度方向电导率的复合板。
    • 9. 发明授权
    • Method of producing exfoliated graphite, flexible graphite, and nano-scaled graphene platelets
    • 生产剥离石墨,柔性石墨和纳米级石墨烯血小板的方法
    • US07824651B2
    • 2010-11-02
    • US11800728
    • 2007-05-08
    • Aruna ZhamuJinjun ShiJiusheng GuoBor Z. Jang
    • Aruna ZhamuJinjun ShiJiusheng GuoBor Z. Jang
    • C01B31/04
    • C01B32/225
    • The present invention provides a method of exfoliating a layered material (e.g., graphite and graphite oxide) to produce nano-scaled platelets having a thickness smaller than 100 nm, typically smaller than 10 nm. The method comprises (a) dispersing particles of graphite, graphite oxide, or a non-graphite laminar compound in a liquid medium containing therein a surfactant or dispersing agent to obtain a stable suspension or slurry; and (b) exposing the suspension or slurry to ultrasonic waves at an energy level for a sufficient length of time to produce separated nano-scaled platelets. The nano-scaled platelets are candidate reinforcement fillers for polymer nanocomposites. Nano-scaled graphene platelets are much lower-cost alternatives to carbon nano-tubes or carbon nano-fibers.
    • 本发明提供一种剥离层状材料(例如石墨和氧化石墨)以产生厚度小于100nm,通常小于10nm的纳米级片晶的方法。 该方法包括(a)将石墨,氧化石墨或非石墨层状化合物的颗粒分散在其中含有表面活性剂或分散剂的液体介质中以获得稳定的悬浮液或浆料; 和(b)将悬浮液或浆料以能量水平暴露于超声波足够长的时间以产生分离的纳米级血小板。 纳米级血小板是聚合物纳米复合材料的候选增强填料。 纳米级石墨烯血小板是碳纳米管或碳​​纳米纤维成本低廉的替代品。