Carbonaceous thin film coated on nanoparticle as fuel cell catalyst formed by one-pot hybrid physical–chemical vapor deposition of iron phthalocyanine
Carbonaceous thin film coated on nanoparticle as fuel cell catalyst formed by one-pot hybrid physical–chemical vapor deposition of iron phthalocyanine
复制标题
铁酞菁一锅混合物理化学气相沉积形成纳米颗粒碳质薄膜作为燃料电池催化剂
DOI：
10.1016/j.electacta.2012.12.010
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发表时间：
2013
影响因子：
6.6
通讯作者：
A. Mineshige
中科院分区：
文献类型：
--
作者：
J. Maruyama;Mari Yamamoto;Takahiro Hasegawa;S. Iwasaki;Z. Siroma;A. Mineshige
为了提供活性催化剂和实现燃料电池的进步，开发用于形成不含贵金属的燃料电池催化剂的新方法是当前重要的。我们尝试了在高比表面积碳颗粒表面一锅法物理化学气相沉积酞菁铁（FePc）。该方法能够在碳材料上负载FePc并同时进行热处理，从而形成具有阴极氧还原催化活性的碳-碳复合纳米颗粒，其在聚合物电解质燃料电池的阴极中起作用。透射电镜和孔结构分析表明，热处理过程中升温速率的增加、FePc-基体结构的排列以及简单地调节它们之间的比例控制了碳膜的负载量和厚度。催化活性依赖于这些参数。Fe-K边扩展的X射线吸收精细结构表明，FePc（Fe-Nx部分）的中心结构在碳质薄膜中得到部分保留。本研究的结果也显示了用功能性碳质薄膜包覆各种纳米颗粒的可能性。
The development of new methods for the formation of noble-metal-free fuel cell catalysts is currently important in order to provide active catalysts and to realize fuel cell advancements. We attempted the one-pot physical–chemical vapor deposition of iron phthalocyanine (FePc) on the surface of high-surface-area carbon particles as the substrate. This method enabled loading of FePc on the carbon material and concurrent heat treatment, resulting in the formation of carbon–carbon composite nanoparticles with a catalytic activity for the cathodic oxygen reduction, which functioned in a cathode in the polymer electrolyte fuel cell. The increasing temperature rate during the heat treatment, arranging the FePc–substrate configuration and simply adjusting their ratio controlled the amount of the loading and the thickness of the carbonaceous film, which was demonstrated by the transmission electron microscope images and the pore structure analysis. The catalytic activity was dependent on these parameters. The partial retention of the center structure of the FePc (Fe–Nxmoiety) in the carbonaceous thin film was indicated by the Fe-K edge extended X-ray absorption fine structure. The results of this study also showed the possibility of coating various kinds of nanoparticles with functional carbonaceous thin films.