Facile Synthesis of Nanoporous Pt-Y alloy with Enhanced Electrocatalytic Activity and Durability

被引：65
作者：
Cui, Rongjing [1 ]
Mei, Ling [1 ,2 ]
Han, Guangjie [1 ,2 ]
Chen, Jiyun [3 ,4 ]
Zhang, Genhua [5 ]
Quan, Ying [5 ]
Gu, Ning [2 ]
Zhang, Lei [3 ]
Fang, Yong [3 ]
Qian, Bin [3 ]
Jiang, Xuefan [3 ]
Han, Zhida [3 ]
机构：
[1] Changshu Inst Technol, Dept Chem & Mat Engn, Changshu 215500, Peoples R China
[2] Hebei Normal Univ, Dept Chem & Mat, Shijiazhuang 050024, Peoples R China
[3] Changshu Inst Technol, Dept Phys, Jiangsu Lab Adv Funct Mat, Changshu 215500, Peoples R China
[4] China Univ Min & Technol, Sch Mat Sci & Engn, Xuzhou 221116, Peoples R China
[5] Changshu Inst Technol, Sch Biol & Food Engn, Suzhou Key Lab Food Qual & Safety, Changshu 215500, Peoples R China
来源：
SCIENTIFIC REPORTS | 2017年 / 7卷
基金：
中国国家自然科学基金;
关键词：
OXYGEN REDUCTION REACTION; PLATINUM; STABILITY; NANOPARTICLES; CATALYSTS; ELECTROREDUCTION; SEGREGATION; EVOLUTION; METALS; NANOCRYSTALS;
D O I：
10.1038/srep41826
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Recently, Pt-Y alloy has displayed an excellent electrocatalytic activity for oxygen reduction reaction (ORR), and is regarded as a promising cathode catalyst for fuel cells. However, the bulk production of nanoscaled Pt-Y alloy with outstanding catalytic performance remains a great challenge. Here, we address the challenge through a simple dealloying method to synthesize nanoporous Pt-Y alloy (NP-PtY) with a typical ligament size of similar to 5 nm. By combining the intrinsic superior electrocatalytic activity of Pt-Y alloy with the special nanoporous structure, the NP-PtY bimetallic catalyst presents higher activity for ORR and ethanol oxidation reaction, and better electrocatalytic stability than the commercial Pt/C catalyst and nanoporous Pt alloy. The as-made NP-PtY holds great application potential as a promising electrocatalyst in proton exchange membrane fuel cells due to the advantages of facile preparation and excellent catalytic performance.
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页数：10
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