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    • 83. 发明授权
    • Method of forming catalyst layer for fuel cell
    • 形成燃料电池催化剂层的方法
    • US06344428B1
    • 2002-02-05
    • US09258802
    • 1999-02-26
    • Chan LimHyuk Chang
    • Chan LimHyuk Chang
    • H01M488
    • H01M4/8828H01M4/8807H01M4/8882H01M4/8896H01M4/926H01M8/1004H01M2300/0082Y02P70/56
    • A method for preparing a slurry for forming a catalyst layer of a PEM fuel cell electrode and a method for fabricating the PEM fuel cell produced thereby are provided. The method for preparing a slurry for forming a catalyst layer of a proton exchange membrane (PEM) fuel cell according to the present invention comprises the steps of (a) adding an MOH solution to a perfluorosulfonate ionomer (PFSI) solution to convert PFSI in the PFSI solution into an M+ form-PFSI solution, wherein M is an alkaline metal selected from the group consisting of Li, Na and K; (b) adding an organic polar solvent having a higher boiling point than that of alcohol remaining in the PFSI solution to a mixed solution obtained in step (a) and heating the mixture at a temperature range of the boiling point of the alcohol to 20° C. higher than the boiling point to remove the remaining alcohol to obtain a pretreated PFSI solution; and (c) mixing the pretreated PFSI solution with Pt/C to form a slurry for forming a catalyst layer of a PEM fuel cell. Since processing stability is improved and the slurry can be easily prepared, Pt loading greater than a conventional level can be achieved by a single coating step by preventing a Pt catalyst from penetrating into a backing layer, the electrode characteristics are improved. Also, mass production of the PEM fuel cells is possible.
    • 提供了一种制备用于形成PEM燃料电池电极的催化剂层的浆料的方法和由此制备的PEM燃料电池的制造方法。 制备根据本发明的用于形成质子交换膜(PEM)燃料电池的催化剂层的浆料的方法包括以下步骤:(a)将MOH溶液加入到全氟磺酸根离子交联聚合物(PFSI)溶液中,以将PFSI在 PFSI溶液转化成M +形式-PFSI溶液,其中M是选自Li,Na和K的碱金属; (b)将具有比在PFSI溶液中残留的醇的沸点高的沸点的有机极性溶剂加入到步骤(a)中获得的混合溶液中,并将该混合物在醇的沸点范围内加热至20℃ C.高于沸点以除去剩余的醇以获得预处理的PFSI溶液; 和(c)将预处理的PFSI溶液与Pt / C混合以形成用于形成PEM燃料电池的催化剂层的浆料。 由于加工稳定性得到改善并且可以容易地制备浆料,所以可以通过单一的涂覆步骤通过防止Pt催化剂渗透到背衬层中来实现大于常规水平的Pt负载,从而提高电极特性。 此外,PEM燃料电池的批量生产是可能的。
    • 89. 发明申请
    • CARBON NANOTUBES FOR FUEL CELLS, METHOD FOR MANUFACTURING THE SAME, AND FUEL CELL USING THE SAME
    • 用于燃料电池的碳纳米管,其制造方法和使用该燃料电池的燃料电池
    • US20100018851A1
    • 2010-01-28
    • US12511468
    • 2009-07-29
    • Won-bong CHOIJae-uk ChuChan-ho ParkHyuk Chang
    • Won-bong CHOIJae-uk ChuChan-ho ParkHyuk Chang
    • C01B31/02D01F9/12
    • H01M4/8605B82Y30/00B82Y40/00C01B32/162H01M4/9083H01M4/926H01M2008/1095Y10S977/70Y10S977/701Y10S977/72Y10S977/743Y10S977/843Y10S977/847
    • Carbon nanotubes for use in a fuel cell, a method for fabricating the same, and a fuel cell using the carbon nanotubes for its electrode are provided. The internal and external walls of the carbon nanotubes are doped with nano-sized metallic catalyst particles uniformly to a degree of 0.3-5 mg/cm2. The carbon nanotubes are grown over a carbon substrate using chemical vapor deposition or plasma enhanced chemical vapor deposition. Since the carbon nanotubes have a large specific surface area, and metallic catalyst particles are uniformly distributed over the internal and external walls thereof, the reaction efficiency in an electrode becomes maximal when the carbon nanotubes are used for the electrode of a fuel cell. The carbon nanotubes fabricated using the method can be applied to form a large electrode. The carbon nanotubes grown over the carbon substrate can be readily applied to an electrode of a fuel cell, providing economical advantages and simplifying the overall electrode manufacturing process. A fuel cell using as the carbon nanotubes for its electrode provides improved performance.
    • 提供了用于燃料电池的碳纳米管,其制造方法和使用该碳纳米管作为其电极的燃料电池。 碳纳米管的内壁和外壁均匀掺杂有纳米尺寸的金属催化剂颗粒至0.3-5mg / cm2的程度。 使用化学气相沉积或等离子体增强化学气相沉积在碳衬底上生长碳纳米管。 由于碳纳米管具有大的比表面积,并且金属催化剂颗粒均匀地分布在其内壁和外壁上,所以当将碳纳米管用于燃料电池的电极时,电极中的反应效率最大。 使用该方法制造的碳纳米管可以应用于形成大电极。 生长在碳基板上的碳纳米管可以容易地应用于燃料电池的电极,提供经济的优点并简化整个电极的制造过程。 使用作为其电极的碳纳米管的燃料电池提供改进的性能。