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Fabrication of a highly dispersed Pd-core@Pt-shell electrocatalyst for the oxygen reduction reaction
Cao, Longsheng1,2; Jiang, Shangfeng1,2; Zhang, Geng3; Tang, Xuejun1,2; Qin, Xiaoping1; Shao, Zhigang1; Yi, Baolian1
关键词Pd-core@pt-shell Dissociated Hydrogen Oxygen Reduction Electrocatalysis Core Shell
刊名CHINESE JOURNAL OF CATALYSIS
2017-07-01
DOI10.1016/S1872-2067(17)62840-7
38期:7页:1196-1206
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Chemistry, Applied ; Chemistry, Physical ; Engineering, Chemical
研究领域[WOS]Chemistry ; Engineering
关键词[WOS]HIGH-PERFORMANCE ELECTROCATALYSTS ; FUEL-CELLS ; PLATINUM NANOPARTICLES ; TRANSITION-METALS ; SURFACE ; CATALYSTS ; CATHODE ; ALLOYS ; XPS ; ELECTROREDUCTION
英文摘要Core-shell nanostructures have been widely investigated to improve the electrocatalytic performance of platinum. However, organic precursors, surfactants or high temperature are usually necessary during the preparation procedure. Unfortunately, these requirements limit the application of these methods on a large scale. Herein, a Pd-core@Pt-shell nanostructure was fabricated through the reduction of K2PtCl4 by dissociated hydrogen at room temperature without the assistance of either a surfactant or a high-boiling point solvent. The shell thickness of this nanostructure was successfully controlled by varying the amount of K2PtCl4; core-shell nanoparticles with a shell thickness of 0.45, 0.75 and 0.90 nm were obtained, as determined by TEM. The remarkable crystallinity and epitaxial growth of the Pd-core@Pt-shell nanostructure were revealed by HRTEM and EDS. According to ICP and XPS, surface segregation of Pt was established. The impressive ORR performance was attributed to the weak adsorption strength of the OHads species, which resulted from the electron transfer impact between the Pd-core@Pt-shell. The facile and clean preparation method can be used to prepare other core-shell nanostructures under a mild atmosphere. (C) 2017, Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.
语种英语
WOS记录号WOS:000405979100011
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/152025
专题中国科学院大连化学物理研究所
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, Fuel Cell Syst & Engn Grp, Dalian 116023, Liaoning, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Huazhong Agr Univ, Coll Sci, Dept Chem, Wuhan 430070, Hubei, Peoples R China
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Cao, Longsheng,Jiang, Shangfeng,Zhang, Geng,et al. Fabrication of a highly dispersed Pd-core@Pt-shell electrocatalyst for the oxygen reduction reaction[J]. CHINESE JOURNAL OF CATALYSIS,2017,38(7):1196-1206.
APA Cao, Longsheng.,Jiang, Shangfeng.,Zhang, Geng.,Tang, Xuejun.,Qin, Xiaoping.,...&Yi, Baolian.(2017).Fabrication of a highly dispersed Pd-core@Pt-shell electrocatalyst for the oxygen reduction reaction.CHINESE JOURNAL OF CATALYSIS,38(7),1196-1206.
MLA Cao, Longsheng,et al."Fabrication of a highly dispersed Pd-core@Pt-shell electrocatalyst for the oxygen reduction reaction".CHINESE JOURNAL OF CATALYSIS 38.7(2017):1196-1206.
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