Hollow PdCu2@Pt core@shell nanoparticles with ordered intermetallic cores as efficient and durable oxygen reduction reaction electrocatalysts

被引：51
作者：
Park, Hee-Young [1 ]
Park, Jin Hoo [2 ]
Kim, Pil [2 ]
Yoo, Sung Jong [1 ,3 ,4 ]
机构：
[1] Korea Inst Sci & Technol, Fuel Cell Res Ctr, 5 Hwarangno 14 Gil, Seoul 02792, South Korea
[2] Chonbuk Natl Univ, Sch Semicond & Chem Engn, Baekje Daero 567, Jeonju 54896, South Korea
[3] Korea Univ Sci & Technol, KIST Sch, Div Energy & Environm Technol, 5 Hwarang Ro 14 Gil, Seoul 02792, South Korea
[4] Kyung Hee Univ, KHU KIST Dept Converging Sci & Technol, 26 Kyungheedae Ro, Seoul 02447, South Korea
来源：
APPLIED CATALYSIS B-ENVIRONMENTAL | 2018年 / 225卷
关键词：
Polymer electrolyte membrane fuel cell; Oxygen reduction reaction; Hollow nanoparticles; PdCu2@Pt core@shell; Ordered intermetallic core; PLATINUM-MONOLAYER ELECTROCATALYSTS; FUEL-CELLS; ALLOYS; STABILITY; SURFACES; COPPER;
D O I：
10.1016/j.apcatb.2017.11.052
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Carbon-supported hollow PdCu2@Pt core@shell nanoparticles with ordered intermetallic cores were prepared as an efficient and durable oxygen reduction reaction (ORR) electrocatalyst for polymer electrolyte membrane fuel cells (PEMFCs). PdCu2 cores prepared using a chemical reduction method were thermally treated to produce ordered intermetallic structures. A Pt shell was then deposited via a galvanic displacement process. The effect of the galvanic displacement conditions on the properties and structure of the obtained core shell nanoparticles was investigated by varying the solution pH and anion concentration. Acidic conditions and low Cl- concentrations were found to provide a uniform Pt layer with a hollow core, while maintaining the ordered intermetallic core structure. These hollow PdCu2@Pt core@shell nanoparticles showed high activity and stability for ORR electrocatalysis in PEMFCs.
引用
收藏
页码：84 / 90
页数：7
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