Porous carbon-supported PtPdCu alloy heterostructure with three-dimensional spatial network for efficient ethanol eletro-oxidation

IF 5.8 3区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nanoscale Pub Date : 2025-01-28 DOI:10.1039/d4nr05301j

Guanjun Chen, Yichu Lei, Zheming Huang, Tong Wang, Tingwei Hu, Lan Sun, Yongpeng Qiao

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Abstract

Rationalizing efficient and economical electrocatalysts for ethanol eletro-oxidation (EOR) is crucial for the development of sustainable energy sources. Herein, porous carbon-supported PtPdCu ternary alloy heterostructures (PtxPdyCuz/C, x:y:z = atomic ratio) were constructed using Cu-BTC as precursor. Benefiting from the advantages of three-dimensional spatial network structure, flexible ternary alloy composition and strong metal-support interaction, the as-designed PtxPdyCuz/C catalyst presents impressive EOR performance. Specifically, it achieved an EOR specific activity of 37.89 mA cm-2 in alkaline electrolyte, which is 6 and 11.4 times higher than that of Pt/C (6.3 mA cm-2) and Pd/C (3.32 mA cm-2), respectively. And more than 90% of the initial activity was retained after 1000 consecutive CV cycles. In situ FTIR studies further reveal that the PtxPdyCuz/C catalyst only requires a potential of 0.45 V to oxidize poisonous CO intermediates in EOR. This work provides valuable clues for the rationalization of MOF-derived ternary alloy electrocatalysts for ethanol eletro-oxidation.

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来源期刊

Nanoscale CHEMISTRY, MULTIDISCIPLINARY-NANOSCIENCE & NANOTECHNOLOGY

CiteScore

12.10

自引率

3.00%

发文量

1628

审稿时长

1.6 months

期刊介绍： Nanoscale is a high-impact international journal, publishing high-quality research across nanoscience and nanotechnology. Nanoscale publishes a full mix of research articles on experimental and theoretical work, including reviews, communications, and full papers.Highly interdisciplinary, this journal appeals to scientists, researchers and professionals interested in nanoscience and nanotechnology, quantum materials and quantum technology, including the areas of physics, chemistry, biology, medicine, materials, energy/environment, information technology, detection science, healthcare and drug discovery, and electronics.