LAUSR

Engineering robust electrocatalysts is always a key point in direct alcohols fuel cells (DAFCs). Catalysts with one-dimension (1D) structure are well studied and considered as promising candidates among various catalysts in the past decades, however, the precise regulation on the surface structure of 1D nanomaterials is still a worthy subject. By creatively introducing trimetallic nanoalloy, core@multishell structure, and 1D nanowire morphology, we have constructed a kind of novel spiny PtFePd@PtFe/Pt core@multishell 1D nanowires (NWs) catalysts with PtFePd as core and PtFe/Pt as multishell on the basis of improving catalytic property. The composition-optimized Pt5FePd2 1D NWs display remarkable catalytic properties for ethanol oxidation reaction (EOR) and methanol oxidation reaction (MOR), which mass activity are 4.965 and 4.038 A mg-1, 4.6 and 5.0, 4.0 and 9.2-fold higher than Pt/C and Pd/C catalysts. Furthermore, the obtained Pt5FePd2 NWs can also retain favorable stability after durability tests. The unique core@multishell structure, spiny 1D NWs with many steps and kinks, and interior electronic and synergistic effect all contribute to the advanced catalytic performance. The present work has rationally designed novel 1D PtFePd@PtFe/Pt core@multishell NWs catalysts and offers a meaningful guideline for the designing of high-performance electrocatalysts.