Enhanced Catalytic Activity and Stability of Pt/CeO2/PANI Hybrid Hollow Nanorod Arrays for Methanol Electro-oxidation

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• 作者：Han Xu ; An-Liang Wang ; Ye-Xiang Tong ; Gao-Ren Li
• 刊名：ACS Catalysis
• 出版年：2016
• 出版时间：August 5, 2016
• 年：2016
• 卷：6
• 期：8
• 页码：5198-5206
• 全文大小：827K
• 年卷期：0
• ISSN：2155-5435

文摘

Here, we designed and fabricated novel Pt/CeO₂/PANI three-layered hollow nanorod arrays (THNRAs) as advanced electrocatalysts for methanol oxidation by combining the merits of CeO₂, PANI, multilayered structure, and hollow nanorod arrays. The synthesized Pt/CeO₂/PANI THNRAs exhibit higher electrocatalytic activity and better stability toward the oxidation of methanol than Pt/PANI HNRAs, Pt/CeO₂ HNRAs, and commercial Pt/C catalysts. The enhanced electrocatalytic performance of the Pt/CeO₂/PANI THNRAs may be due to the synergistic effects among Pt, CeO₂, and PANI and the special three-layered hollow nanorod arrays, which can provide short diffusion paths for electroactive species and high-availability of electrocatalysts. The facile synthesis method can be considered as a promising strategy to design low-cost, high-performance electrocatalysts for fuel cells.