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吴啟帆,陈子浩,张海清,苏轶坤.结构有序化金属间Pt3Co纳米线用于强化电催化氧还原性能[J].稀有金属材料与工程(英文),2021,50(1):138~144.[Wu Qifan,Chen Zihao,Zhang Haiqing and Su Yikun.Preparation of Structurally Ordered Intermetallic Pt3Co Nanowires and Electrocatalytic Performance for Oxygen Reduction Reaction[J].Rare Metal Materials and Engineering,2021,50(1):138~144.]
Preparation of Structurally Ordered Intermetallic Pt3Co Nanowires and Electrocatalytic Performance for Oxygen Reduction Reaction
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Received:January 02, 2020  
DOI:
Key words: Catalysis  Pt3Co nanowires  oxygen reduction reaction  Crystal structure
Foundation item:国家自然科学基金资助(51742165)
Author NameAffiliation
Wu Qifan,Chen Zihao,Zhang Haiqing and Su Yikun  
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Abstract:
      :In the use of clean energy conversion devices such as fuel cells and metal-air batteries, the oxygen reduction reaction process has proven to be exceedingly crucial. Therefore, the design and synthesis of efficient and stable cathodic oxygen reduction catalysts have been an indispensable task at present. In order to achieve accurate synthesis of materials, and the maximum utilization of platinum, anodic aluminum oxide (AAO) template was used to accurately synthesize bimetallic one-dimensional Pt3Co nanowires in a certain concentration of solution. Subsequently, the alloy nanowires underwent a high-temperature phase transition in the template under vacuum, which effectively prevented material agglomeration. The disordered and ordered Pt3Co nanowires were obtained by phase transition annealing at 400 ℃and 650 ℃ respectively and were confirmed by structural characterizations for order phase transition. As expected, compared to disordered Pt3Co, ordered Pt3Co exhibited better mass activity and half-wave potential, confirming the advantages of ordered bimetal alloy nanowires in composition and structure. After the accelerated durability cycle tests, the ordered and disordered Pt3Co nanowires were still more stable than Pt/Cparticles, indicating the advantage of one-dimensional nanowires. It can be seen that the ordered Pt3Co, as an acceptable catalytic material with potential commercial value, has become alternative materials for future fuel cell catalysts.