采用简易方法合成直接乙醇固体氧化物燃料电池海胆状Pd催化层

在室温下,通过电位置换反应在固体氧化物燃料电池的Ni-YSZ(钇掺杂氧化锆)阳极表面制备海胆状Pd催化层。该催化层的结构和性能通过SEM、XRD和电化学等表征手段进行表征。结果表明,三维纳米花状Pd催化剂是由在Ni-YSZ阳极表面形成的多条纳米棒有序的组合而成。通过在Ni/YSZ阳极表面引入该催化层,相比与传统Ni-YSZ阳极,燃料电池的最高功率和稳定性都获得了很大的提升。该研究表明,电位置换反应是一种很高效的在传统Ni-YSZ阳极表面制备纳米抗积炭的功能层的方法。

Facile synthesis of flower like Pd catalyst for direct ethanol solid oxide fuel cell

A flower like Pd layer was synthesized through galvanic displacement reaction on Ni-YSZ (yttria stabilized zirconia) anode at room temperature. The morphology of as prepared Pd catalyst was characterized by various techniques. It was shown that three dimensional Pd nanoflowers were formed via nanorods on the Ni-YSZ anode. With Pd nanoflowers as a functional layer of the Ni-YSZ anode, the cell exhibited much higher peak power density and better operation stability in ethanol than that made with conventional Ni-YSZ anode. This study demonstrated that galvanic displacement reaction is a promising way to prepare nanostructured metal catalyst as a result of depressing the carbon deposition in Ni-based anode and improving its output in alcohol fuels.