纳米多孔PdCe纳米立方体的乙醇氧化和氧还原性能研究  

Nanoporous PdCe Bimetallic Nanocubes with High Catalytic Activity towards Ethanol Electro-oxidation and Oxygen Reduction Reaction in Alkaline Media

作　　者：陈继云 陈晓晴 张磊[1,2] 房勇 韩志达[1,2] 钱斌[1,2] 江学范[1,2] 崔荣静[2,3] CHEN Jiyun;CHEN Xiaoqing;ZHANG Lei;FANG Yong;HAN Zhida;QIAN Bin;JIANG Xuefan;CUI Rongjing(School of Physics and Electronic Engineering, Changshu Institute of Technology, Changshu 215500, China;Jiangsu Laboratory of Advanced Functional Materials, Changshu Institute of Technology, Changshu 215500, China;School of Chemistry and Materials Engineering, Changshu Institute of Technology, Changshu 215500, China)

机构地区：[1]常熟理工学院物理与电子工程学院,江苏常熟215500 [2]常熟理工学院江苏省新型功能材料重点建设实验室,江苏常熟215500 [3]常熟理工学院化学与材料工程学院,江苏常熟215500

出　　处：《常熟理工学院学报》2019年第5期4-6,共3页Journal of Changshu Institute of Technology

基　　金：国家自然科学基金项目“Ni-Mn基铁磁形状记忆合金的低温相分离和交换偏置效应研究”(51371004)

摘　　要：采用熔体快淬结合去合金化方法制备了纳米多孔PdCe纳米立方体,研究了其电催化性能.结果表明,制备的材料为边长200 nm左右的立方体,立方体内部具有5 nm左右的纳米多孔结构.由于合金协同效应和纳米多孔结构,纳米多孔PdCe在碱性条件下表现出良好的电催化乙醇氧化和氧还原反应的活性和稳定性,其性能远优于纳米多孔Pd和商业Pt/C催化剂.纳米多孔PdCe由于其高活性和可实现量产的制备工艺,在直接乙醇燃料电池中有巨大的应用前景.In this work, we reported a simple method to fabricate nanoporous PdCe(NP-PdCe) nanocubes with high activity and good stability by melt spinning in combination with chemical dealloying. The microstructure results show that the prepared NP-PdCe alloy consists of nanocubes with the average size of 200 nm, exhibiting three-dimensional nanoporous structure with a pore size of around 5 nm. Owing to the combined effect of bimetallic synergistic action and nanoporous structure, the NP-PdCe catalyst exhibits much higher electrocatalytic activity and durability towards ethanol electro-oxidation and oxygen reduction reaction in the alkaline solution, relative to nanoporous Pd and commercial Pd/C catalysts. With the advantages of the scalable preparation and enhanced catalytic performance, the NP-PdCe nanoocubes hold great potential for applications as a promising catalyst in direct ethanol fuel cells.

关 键 词：去合金化 纳米多孔 乙醇氧化反应 氧还原反应 

分 类 号：O643.36[理学—物理化学]