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    • 26. 发明授权
    • Highly conductive composites for fuel cell flow field plates and bipolar plates
    • 用于燃料电池流场板和双极板的高导电复合材料
    • US08865040B2
    • 2014-10-21
    • US13021041
    • 2011-02-04
    • Bor Z. JangAruna ZhamuLulu Song
    • Bor Z. JangAruna ZhamuLulu Song
    • C04B35/00H01M8/02C08J5/04H01B1/24
    • H01M8/0221C08J5/04H01B1/24H01M8/0213H01M8/0226H01M8/0228Y02E60/50Y02P70/56
    • This invention provides a fuel cell flow field plate or bipolar plate having flow channels on faces of the plate, comprising an electrically conductive polymer composite. The composite is composed of (A) at least 50% by weight of a conductive filler, comprising at least 5% by weight reinforcement fibers, expanded graphite platelets, graphitic nano-fibers, and/or carbon nano-tubes; (B) polymer matrix material at 1 to 49.9% by weight; and (C) a polymer binder at 0.1 to 10% by weight; wherein the sum of the conductive filler weight %, polymer matrix weight % and polymer binder weight % equals 100% and the bulk electrical conductivity of the flow field or bipolar plate is at least 100 S/cm. The invention also provides a continuous process for cost-effective mass production of the conductive composite-based flow field or bipolar plate.
    • 本发明提供了一种在板的表面上具有流动通道的燃料电池流场板或双极板,包括导电聚合物复合材料。 复合材料由(A)至少50重量%的导电填料构成,包括至少5重量%的增强纤维,膨胀石墨片,石墨纳米纤维和/或碳纳米管; (B)1〜49.9重量%的聚合物基质材料; 和(C)0.1至10重量%的聚合物粘合剂; 其中导电填料重量%,聚合物基质重量%和聚合物粘合剂重量%的总和等于100%,并且流场或双极板的体电导率至少为100S / cm。 本发明还提供了一种用于成本有效地批量生产基于导电复合材料的流场或双极板的连续方法。
    • 27. 发明申请
    • Process for producing continuous graphitic fibers from living graphene molecules
    • 从活性石墨烯分子生产连续石墨纤维的方法
    • US20140308449A1
    • 2014-10-16
    • US13986208
    • 2013-04-15
    • Aruna ZhamuBor Z Jang
    • Aruna ZhamuBor Z Jang
    • C01B31/04
    • C01B31/04C01B32/20D01D1/02D01D5/04D01D10/02D01F9/12
    • A process for producing a continuous graphitic fiber, comprising: (a) preparing a graphene oxide gel having living graphene oxide molecules or functionalized graphene chains dissolved in a fluid medium; (b) depositing at least a continuous filament of graphene oxide gel onto a supporting substrate under a condition of stress-induced molecular alignment of living graphene oxide molecules along a filament axis direction; (c) removing the fluid medium to form a continuous graphene oxide fiber, having an inter-plane spacing d002 of 0.4 nm to 1.2 nm and an oxygen content no less than 5% by weight; and (d) heat treating the continuous graphene oxide fiber to form the continuous graphitic fiber at a temperature higher than 100° C. (preferably >600° C.) to an extent that an inter-plane spacing d002 is decreased to a value of 0.3354-0.4 nm and the oxygen content is decreased to less than 5% by weight.
    • 一种生产连续石墨纤维的方法,包括:(a)制备具有溶解在流体介质中的活性氧化石墨烯分子或官能化石墨烯链的石墨烯氧化物凝胶; (b)在活性石墨烯氧化物分子沿着长丝轴线方向的应力诱导分子取向的条件下,将至少一层氧化石墨烯凝胶的连续长丝沉积到支撑基底上; (c)除去流体介质以形成连续的石墨烯氧化纤维,其平面间距d002为0.4nm至1.2nm,氧含量不低于5wt%; 和(d)在高于100℃(优选> 600℃)的温度下对连续的石墨烯氧化纤维进行热处理以形成连续的石墨纤维,使得平面间距d002降低到 0.3354-0.4nm,氧含量降低到小于5重量%。