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    • 3. 发明授权
    • Nanocomposite for fuel cell, method of preparing the nanocomposite, and fuel cell including the nanocomposite
    • 用于燃料电池的纳米复合材料,制备纳米复合材料的方法和包括纳米复合材料的燃料电池
    • US08084167B2
    • 2011-12-27
    • US11985531
    • 2007-11-14
    • Jeong-hee LeeJae-young ChoiChan-ho PakEun-ju RaYoung-hee LeeKay-hyeok An
    • Jeong-hee LeeJae-young ChoiChan-ho PakEun-ju RaYoung-hee LeeKay-hyeok An
    • H01M4/02
    • H01M4/92B82Y30/00D01F9/20D01F11/04H01M4/90H01M4/9083H01M4/926H01M2008/1095Y10S977/948
    • Provided is a nanocomposite for the catalyst layer of a fuel cell electrode including: a carbon nanofiber; and metal catalyst particles uniformly applied to the surface of the carbon nanofiber, wherein the carbon nanofiber has a surface oxygen content of at least 0.03 calculated by the formula: Oxygen content=[atomic percentage of oxygen/atomic percentage of carbon] using atomic percentages of oxygen and carbon, respectively calculated from an area of an oxygen peak having a binding energy of 524 to 540 eV, an area of a nitrogen peak having a binding energy of 392 to 404 eV, and an area of a carbon peak having a binding energy of 282 to 290 eV in X-ray photoelectron spectroscopy. The nanocomposite according to the present invention has high surface oxygen content and has metal catalyst nano particles densely and uniformly distributed on the outer wall of the carbon fibers, thereby having high electrochemical efficiency. Thus, efficiency of fuel cells can be improved using the nanocomposite.
    • 提供一种用于燃料电池电极的催化剂层的纳米复合材料,其包括:碳纳米纤维; 和金属催化剂颗粒均匀地施加到碳纳米纤维的表面上,其中碳纳米纤维的表面氧含量至少为0.03,由下式计算:氧含量= [原子百分比的氧/原子百分比的碳]使用原子百分比 氧和碳分别由具有524至540eV的结合能的氧峰的面积,具有392至404eV的结合能的氮峰的面积和具有结合能的碳峰的面积计算 在X射线光电子能谱中为282〜290eV。 根据本发明的纳米复合材料具有高的表面氧含量,并且在碳纤维的外壁上密集均匀地分布有金属催化剂纳米颗粒,从而具有高的电化学效率。 因此,可以使用纳米复合材料来提高燃料电池的效率。