期刊
NANO ENERGY
卷 21, 期 -, 页码 247-257出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nanoen.2016.01.013
关键词
Core-shell structure; Atomic layer coating; PtRu alloy; Electrocatalysts; Methanol oxidation
类别
资金
- National Basic Research Program of China [2012CB932800, 2012CB921702, 2013CB632404, 2014CB921002]
- National Natural Science Foundation of China [21176111, 21476104, 51171092, 51332001]
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDB07030200]
- PAPD of Jiangsu Higher Education Institutions
- Jiangsu Province Natural Science Foundation for Distinguished Young Scholars [BK20150009]
- Qing Lan Project of Jiangsu Province, China
Platinum-based alloy nanocatalysts are highly attractive for both heterogeneous catalysis and electrocatalysis. However, their stability remains a major concern for their application under realistic operating conditions. We herein report a microwave-assisted synthesis of atomically ordered Ru-core Pt-shell (Ru@Pt) nanoparticles that show superior catalytic properties for methanol electrooxidation. The Ru@Pt catalysts are found to display higher methanol oxidation activity and CO-deactivation resistance than the commercial Pt-Ru catalysts. Shell-thickness variation induced properties is of great importance for core-shell catalysis. Above all, well-ordered Ru@Pt with sub-nm Pt shell exhibit superior durability in long-term and extreme operation condition in direct methanol fuel cell (DMFC). This type of core-shell catalysts thus hold great potential to be applied as high performance anode catalysts in DMFCs. (C) 2016 Elsevier Ltd. All rights reserved.
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