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    • 11. 发明申请
    • METAL-FREE OXYGEN REDUCTION ELECTROCATALYSTS
    • 无金属氧化还原电解质
    • US20140050995A1
    • 2014-02-20
    • US14002590
    • 2012-03-01
    • Liming Dai
    • Liming Dai
    • H01M4/90
    • H01M4/9008H01M4/8605H01M4/8652H01M4/90H01M8/1007
    • An electrocatalyst material comprising a functionalized catalytic substrate, the catalytic substrate comprising an electron-accepting material adsorbed thereto. In one embodiment, the catalytic substrate comprises carbon nanotubes or graphene sheets having a nitrogen-containing or nitrogen-free polyelectrolyte, e.g., poly(diallyldimethylammonium chloride) (PDDA), adsorbed thereto. The electrocatalyst material exhibits excellent catalytic activity, as well as broad fuel selectivity, resistance to poisoning effects, and durability. The electrocatalyst can be used as part of an electrode structure, e.g., a cathode, that can be used in a wide range of electrochemical devices.
    • 一种电催化剂材料,其包含官能化的催化底物,所述催化底物包含吸附于其上的电子接受材料。 在一个实施方案中,催化底物包含具有吸附于其上的含氮或无氮聚电解质(例如聚(二烯丙基二甲基氯化铵)(PDDA))的碳纳米管或石墨烯片。 电催化剂材料表现出优异的催化活性,以及​​广泛的燃料选择性,耐中毒效果和耐久性。 电催化剂可以用作电极结构的一部分,例如阴极,其可用于宽范围的电化学装置。
    • 12. 发明申请
    • METAL-FREE VERTICALLY-ALIGNED NITROGEN-DOPED CARBON NANOTUBE CATALYST FOR FUEL CELL CATHODES
    • 用于燃料电池阴极的无金属垂直对准的氮化碳纳米管催化剂
    • US20100183950A1
    • 2010-07-22
    • US12642059
    • 2009-12-18
    • Liming Dai
    • Liming Dai
    • H01M8/02H01M4/02C23F1/00
    • H01B1/24H01M4/8605H01M4/8668H01M4/96H01M8/1007
    • Metal-free fuel cell cathodes having a catalytic layer of vertically-aligned, nitrogen-doped carbon nanotubes (VA-NCNTs) are provided. The fuel cell cathodes comprise a cathode body, a binder layer attached to an outer surface of the cathode body, and the catalytic layer, which is supported by the binder layer. The binder layer may comprise a composite of a conductive polymer and doped or undoped nonaligned carbon nanotubes. In a method for forming the fuel cell cathodes, the VA-NCNTs may be formed by pyrolysis of a metalorganic compound and integration of the nanotubes with nitrogen. The binder layer is applied, and the resulting supported nanotube array may be attached to the cathode body. Fuel cells comprising the fuel cell cathodes are provided. The fuel cell cathodes comprising VA-NCNTs demonstrate superior oxygen-reduction reaction performance, including for electrocatalytic activity, operational stability, tolerance to crossover effects, and resistance to CO poisoning.
    • 提供了具有垂直排列的氮掺杂碳纳米管(VA-NCNT)的催化层的无金属燃料电池阴极。 燃料电池阴极包​​括阴极体,附着到阴极体的外表面的粘合剂层和由粘合剂层支撑的催化剂层。 粘合剂层可以包括导电聚合物和掺杂或未掺杂的非对准碳纳米管的复合材料。 在形成燃料电池阴极的方法中,可以通过金属有机化合物的热分解和纳米管与氮的整合来形成VA-NCNT。 施加粘合剂层,并且所得的负载型纳米管阵列可以附着到阴极体。 提供了包括燃料电池阴极的燃料电池。 包括VA-NCNT的燃料电池阴极表现出优异的氧还原反应性能,包括电催化活性,操作稳定性,对交叉效应的耐受性和对CO中毒的抗性。
    • 15. 发明授权
    • Multilayer carbon nanotube films and method of making the same
    • 多层碳纳米管薄膜及其制造方法
    • US06808746B1
    • 2004-10-26
    • US09958906
    • 2002-01-11
    • Liming DaiShaoming Huang
    • Liming DaiShaoming Huang
    • D01F9127
    • B82Y30/00B82Y40/00C01B32/162C01B2202/08D01F9/127Y10S427/102Y10S977/778Y10S977/842Y10S977/896
    • This invention relates to a process for the preparation of a substrate-free aligned nanotube film, comprising: (a) synthesizing a layer of aligned carbon nanotubes on a quartz glass substrate by pyrolysis of a carbon-containing material, in the presence of a suitable catalyst for nanotube formation; and (b) etching the quartz glass substrate at the nanotube/substrate interface to release the layer of aligned nanotubes from the substrate. The invention also provides a process for the preparation of a multilayer carbon nanotube film comprising depositing a substrate-free carbon nanotube film onto another nanotube film. Further, the invention provides a process for the preparation of a “hetero-structured” multilayer carbon nanotube film which includes one or more carbon nanotube layers together with layers of other materials, such as metal, semiconductor and polymer.
    • 本发明涉及一种制备无底物取向纳米管薄膜的方法,包括:(a)在合适的条件下,通过热解含碳材料,在石英玻璃基板上合成排列的碳纳米管层 纳米管形成催化剂; 和(b)在纳米管/衬底界面处蚀刻石英玻璃衬底以从衬底释放取向的纳米管层。 本发明还提供了一种制备多层碳纳米管膜的方法,包括将无底物的碳纳米管膜沉积到另一纳米管膜上。 此外,本发明提供了制备“异质结构”的多层碳纳米管膜的方法,其包括一个或多个碳纳米管层以及诸如金属,半导体和聚合物的其它材料层。
    • 16. 发明授权
    • Metal-free vertically-aligned nitrogen-doped carbon nanotube catalyst for fuel cell cathodes
    • 用于燃料电池阴极的无金属垂直排列的氮掺杂碳纳米管催化剂
    • US08221937B2
    • 2012-07-17
    • US12642059
    • 2009-12-18
    • Liming Dai
    • Liming Dai
    • H01M4/90H01M8/00
    • H01B1/24H01M4/8605H01M4/8668H01M4/96H01M8/1007
    • Metal-free fuel cell cathodes having a catalytic layer of vertically-aligned, nitrogen-doped carbon nanotubes (VA-NCNTs) are provided. The fuel cell cathodes comprise a cathode body, a binder layer attached to an outer surface of the cathode body, and the catalytic layer, which is supported by the binder layer. The binder layer may comprise a composite of a conductive polymer and doped or undoped nonaligned carbon nanotubes. In a method for forming the fuel cell cathodes, the VA-NCNTs may be formed by pyrolysis of a metalorganic compound and integration of the nanotubes with nitrogen. The binder layer is applied, and the resulting supported nanotube array may be attached to the cathode body. Fuel cells comprising the fuel cell cathodes are provided. The fuel cell cathodes comprising VA-NCNTs demonstrate superior oxygen-reduction reaction performance, including for electrocatalytic activity, operational stability, tolerance to crossover effects, and resistance to CO poisoning.
    • 提供了具有垂直排列的氮掺杂碳纳米管(VA-NCNT)的催化层的无金属燃料电池阴极。 燃料电池阴极包​​括阴极体,附着到阴极体的外表面的粘合剂层和由粘合剂层支撑的催化剂层。 粘合剂层可以包括导电聚合物和掺杂或未掺杂的非对准碳纳米管的复合材料。 在形成燃料电池阴极的方法中,可以通过金属有机化合物的热分解和纳米管与氮的整合来形成VA-NCNT。 施加粘合剂层,并且所得的负载型纳米管阵列可以附着到阴极体。 提供了包括燃料电池阴极的燃料电池。 包括VA-NCNT的燃料电池阴极表现出优异的氧还原反应性能,包括电催化活性,操作稳定性,对交叉效应的耐受性和对CO中毒的抗性。