Preparation and characterization of core-shell structured catalysts using PtxPdy as active shell and nano-sized Ru as core for potential direct formic acid fuel cell application

被引：42
作者：
Gao, Haili [1 ]
Liao, Shijun [1 ]
Zeng, Jianhuang [1 ]
Xie, Yichun [1 ]
Dang, Dai [1 ]
机构：
[1] S China Univ Technol, Sch Chem & Chem Engn, Guangzhou 510641, Guangdong, Peoples R China
来源：
ELECTROCHIMICA ACTA | 2011年 / 56卷 / 05期
关键词：
Ru@PtxPdy/C; Catalysts; Core-shell structure; Formic acid oxidation; ELECTROOXIDATION; NANOPARTICLES; OXIDATION; PLATINUM; METHANOL; PERFORMANCE; SURFACE; ALLOY;
D O I：
10.1016/j.electacta.2010.11.090
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
Carbon-supported core-shell structured Ru@PtxPdy/C catalysts with PtxPdy as shell and nano-sized Ru as core are prepared by a successive reduction procedure. The catalysts are extensively characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The formic acid oxidation activity of Ru@PtxPdy/C varies with the varying Pt:Pd atomic ratio. The peak oxidation potential on Ru@Pt1Pd2/C shifts negatively for about 200 mV compared with that of Pd/C. The higher electro-catalytic activity toward formic acid oxidation on core-shell structured Ru@PtxPdy/C catalyst than that on PtxPdy/C suggests the high utilization of noble metals. In addition to the enhanced noble metal utilization, Ru@PtxPdy/C catalyst also shows improved stability as evidenced by chronoamperometric evaluations. (C) 2010 Elsevier Ltd. All rights reserved.
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收藏
页码：2024 / 2030
页数：7
相关论文
共 30 条
[1]   Ru-Pt core-shell nanoparticles for preferential oxidation of carbon monoxide in hydrogen [J].
Alayoglu, Selim ;
Nilekar, Anand U. ;
Mavrikakis, Manos ;
Eichhorn, Bryan .
NATURE MATERIALS, 2008, 7 (04) :333-338
[2]   The electro-oxidation of formic acid on Pt-Pd single crystal bimetallic surfaces [J].
Arenz, M ;
Stamenkovic, V ;
Schmidt, TJ ;
Wandelt, K ;
Ross, PN ;
Markovic, NM .
PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2003, 5 (19) :4242-4251
[3]   Bonding and motional aspects of CO adsorbed on the surface of Pt nanoparticles decorated with Pd [J].
Babu, PK ;
Kim, HS ;
Chung, JH ;
Oldfield, E ;
Wieckowski, A .
JOURNAL OF PHYSICAL CHEMISTRY B, 2004, 108 (52) :20228-20232
[4]   Electro-oxidation of formic acid catalyzed by FePt nanoparticles [J].
Chen, Wei ;
Kim, Jaemin ;
Sun, Shouheng ;
Chen, Shaowei .
PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2006, 8 (23) :2779-2786
[5]   PtRu nanoparticles supported on nitrogen-doped multiwalled carbon nanotubes as catalyst for methanol electrooxidation [J].
Chetty, Raghuram ;
Kundu, Shankhamala ;
Xia, Wei ;
Bron, Michael ;
Schuhmann, Wolfgang ;
Chirila, Valentin ;
Brandl, Waltraut ;
Reinecke, Thomas ;
Muhler, Martin .
ELECTROCHIMICA ACTA, 2009, 54 (17) :4208-4215
[6]   Platinum decorated Ru/C: Effects of decorated platinum on catalyst structure and performance for the methanol oxidation reaction [J].
Gao, Haili ;
Liao, Shijun ;
Zeng, Jianhuang ;
Xie, Yichun .
JOURNAL OF POWER SOURCES, 2011, 196 (01) :54-61
[7]   Direct Formic Acid Fuel Cells with 600 mA cm-2 at 0.4 V and 22 °C [J].
Ha, S. ;
Larssen, R. ;
Zhu, Y. ;
Masel, R. I. .
FUEL CELLS, 2004, 4 (04) :337-343
[8]   Performance characterization of Pd/C nanocatalyst for direct formic acid fuel cells [J].
Ha, S ;
Larsen, R ;
Masel, RI .
JOURNAL OF POWER SOURCES, 2005, 144 (01) :28-34
[9]   Electrocatalytic properties of nanoporous PtRu alloy towards the electrooxidation of formic acid [J].
Jiang, Junhua ;
Kucernak, Anthony .
JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 2009, 630 (1-2) :10-18
[10]   Investigation of a Novel Catalyst Coated Membrane Method to Prepare Low-Platinum-Loading Membrane Electrode Assemblies for PEMFCs [J].
Leimin, X. ;
Shijun, L. ;
Lijun, Y. ;
Zhenxing, L. .
FUEL CELLS, 2009, 9 (02) :101-105
123