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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。
A sea urchin Pd catalytic layer was prepared on the surface of Ni-YSZ (yttrium-doped zirconia) anode of a solid oxide fuel cell by potentiometric displacement reaction at room temperature. The structure and properties of the catalyst layer were characterized by SEM, XRD and electrochemical characterization. The results show that the three-dimensional nano-flower-shaped Pd catalyst is composed of ordered nanorods formed on the surface of Ni-YSZ anode. By introducing this catalytic layer on the Ni / YSZ anode surface, the maximum power and stability of the fuel cell are greatly improved compared with the conventional Ni-YSZ anode. The study shows that the potential exchange reaction is a very efficient method for preparing nanofluid-resistant functional layers on the surface of a conventional Ni-YSZ anode.