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    • 53. 发明公开
    • METHOD FOR PRODUCING MESOPHASE PITCH ACTIVE CARBON FIBER, MESOPHASE PITCH ACTIVE CARBON FIBER, ELECTRIC DOUBLE-LAYER CAPACITOR
    • 用于生产中间相沥青基活性炭纤维,中间相沥青基活性炭纤维,双电层电容器
    • EP1033423A1
    • 2000-09-06
    • EP99943442.6
    • 1999-09-21
    • PETOCA, Ltd
    • MAEDA, Takashi, Petoca, Ltd.KAWABUCHI, YujiHAGA, TakahiroHOSOTSUBO, Tomiji
    • D01F9/14
    • D01F9/145H01G11/34Y02E60/13
    • A process for producing a mesophase pitch based active carbon fiber, comprising the steps of carbonizing a mesophase pitch based infusibilized fiber at 600 to 900°C, activating the thus obtained carbon fiber with alkali, and immersing the thus obtained mesophase pitch based active carbon fiber in an electrolyte and subjecting the immersed mesophase pitch based active carbon fiber to such a charge and discharge treatment that a voltage, gradually increased until exceeding 2.5 V is applied at a constant current density to the mesophase pitch based active carbon fiber so that an electric double layer is formed at an interface of the mesophase pitch based active carbon fiber and the electrolyte to thereby effect a charging and thereafter a discharging is effected at a constant current density. There are further provided an active carbon fiber produced by the above process and an electric double layer capacitor including an electrode comprising this active carbon fiber.
    • 一种生产中间相沥青基活性炭纤维,包括碳化的中间相沥青的步骤过程基于在600熔化纤维至900℃,激活与碱将这样得到的碳纤维,并始终唱如此获得的中间相沥青基活性炭纤维 在电解质和使所浸入的中间相沥青基活性炭纤维寻求一个充电和放电处理没有电压时,逐渐增加,直到超过2.5 V在基于活性的碳纤维作为双电做的恒定电流密度的中间相沥青中的应用 层在形成于中间相沥青基活性炭纤维与电解质的界面,从而实现充放电之后是一个实现以恒定的电流密度。 这里还提供了对用上述方法和包含这个活性炭纤维包括双电层电容器电极产生的活性的碳纤维。
    • 54. 发明公开
    • Graphite Materials for negative electrode used in lithium secondary battery
    • Graphite-MaterialenfürNegativelektrode eines锂 - Akkumulators
    • EP1011161A2
    • 2000-06-21
    • EP99123067.3
    • 1999-11-20
    • PETOCA Ltd.
    • Tamaki, Toshio, c/o Petoca Ltd.Ishigami, Kazunori, c/o Petoca Ltd.
    • H01M4/58C01B31/04
    • H01M4/587H01M4/362H01M2004/021
    • There are disclosed graphite materials for a negative electrode used in a lithium secondary battery which graphite materials have an average specific surface area of 1.5 m 2 /gram to 5 m 2 /gram and comprise (A) milled graphite fibers which are produced by milling and graphitizing mesophase pitch-based carbon fibers, and which have an interplanar spacing of the graphite layer (d 002 ) of at most 0.337nm and a specific surface area of 0.8m 2 /gram to 1.3m 2 /gram; and (B) graphite materials which have an interplanar spacing of the graphite layer (d 002 ) of at most 0.336nm, a degree of graphitization (P 101 /P 100 ) of at least 2.0 and a specific surface area of 2m 2 /gram to 15m 2 /gram, wherein the components (A) and (B) are mixed at a ratio (A)/(B) by weight of 90/10 to 50/50. The above graphite materials comprising the components (A) and (B), when used for a negative electrode in a lithium secondary battery, can enhance the performance of the battery and charge/discharge capacity thereof especially in a high load discharge.
    • 公开了用于锂二次电池的负极用石墨材料,其中石墨材料的平均比表面积为1.5m 2 / g〜5m 2 / g,并且包含(A)研磨的石墨纤维, 通过研磨和石墨化中间相沥青基碳纤维制成,并且石墨层(d002)的面间距至多为0.337nm,比表面积为0.8m 2 / g至1.3m 2 / 公克; 和(B)具有至多0.336nm的石墨层的面间距(d002),石墨化度(P101 / P100)为2.0以上,比表面积为2m 2 / g的石墨材料, 15m 2 / g,其中组分(A)和(B)以90/10至50/50的重量比(A)/(B))混合。 包含组分(A)和(B)的上述石墨材料当用于锂二次电池中的负极时,可以提高电池的性能和充电/放电容量,特别是在高负载放电中。
    • 58. 发明公开
    • Activated carbon fiber molding and process for producing the same
    • 活性炭纤维的模塑材料和制备方法
    • EP0792958A2
    • 1997-09-03
    • EP97103350.1
    • 1997-02-28
    • PETOCA LTD.
    • Hosotsubo, TomijiKawamura, ToshifumiMiura, KouichiNakagawa, Hiroyuki
    • D01F9/145C04B35/83
    • C04B35/62272D01F9/145
    • A process for producing an activated carbon fiber molding is disclosed which comprises spinning an isotropic pitch to thereby obtain pitch fibers, infusibilizing the pitch fibers to thereby obtain infusibilized fibers, heating the infusibilized fibers under a mechanical load to thereby obtain a molding and activating the molding. In this process, the infusibilized fibers and/or infusibilized fibers molding may be heated in an inert atmosphere so as to effect a light carbonization thereof and thereafter subjected to the subsequent step of the process. The pitch-based porous activated carbon fiber molding obtained by this process has a strikingly high bulk density and can sufficiently exhibit the specific properties of the activated carbon fiber, e.g. a large specific surface area, to thereby have a high adsorption efficiency.
    • 一种用于在活性碳纤维成型制造方法是圆盘游离缺失,其包括旋涂各向同性沥青从而获得沥青纤维;难熔化处理沥青纤维,从而得到难熔化的纤维,机械负载条件下加热该难熔化处理的纤维,从而得到模制和激活所述成型 , 在此过程中,不熔化纤维和/或难熔纤维成型可以以惰性气氛中,在这样进行加热以影响一个轻碳化物,然后进行该过程的后续步骤。 通过这种方法得到的沥青系多孔活性碳纤维成型体具有显着高的堆积密度,并且可以充分发挥活性碳纤维的具体性质,例如 大的比表面积,从而具有高的吸附效率。
    • 60. 发明公开
    • Process for preparing milled graphite fibers
    • 磨碎的石墨纤维的制备方法
    • EP0707098A3
    • 1996-05-01
    • EP95115326.1
    • 1995-09-28
    • PETOCA Ltd.
    • Tamaki, Toshio, c/o Petoca Ltd.Tamaki, Minoru, c/o Petoca Ltd.Katsuta, Yasushi, c/o Petoca Ltd.
    • D01F9/145
    • D01F9/145
    • Disclosed is a process for preparing milled graphite fibers in which the amount of metallic components contained in the milled carbon fibers before graphitizing is limited to not more than 100/1 000 000 in terms of weight ratio. Also disclosed is a process for preparing milled graphite fibers in which the amount of metallic components contained in the milled carbon fibers before graphitizing except metallic components originally contained in the fibers themselves is limited to not more than 50/1 000 000 in terms of weight ratio. According to these processes, there can be obtained milled graphite fibers whose surfaces are inert, which suffer few longitudinal crackings and which are almost free from occurrence of particulate substances comprising agglomerated or bonded fibers.
    • 公开了一种制备磨碎石墨纤维的方法,其中石墨化之前磨碎的碳纤维中所含金属成分的量按重量比限制在不超过100/1000000。 还公开了一种制备磨碎的石墨纤维的方法,其中,除了初始包含在纤维中的金属成分本身之外,石墨化之前磨碎的碳纤维中所含的金属成分的量按重量比限制在不超过50/1000000 。 根据这些方法,可以获得表面惰性的磨碎石墨纤维,其纵向裂纹很少,几乎不会发生包含附聚或粘合纤维的颗粒状物质。