Octahedral PtNi Nanoparticle Catalysts: Exceptional Oxygen Reduction Activity by Tuning the Alloy Particle Surface Composition

被引：497

作者：

Cui, Chunhua ^{[1
]}

Gan, Lin ^{[1
]}

Li, Hui-Hui ^{[2
]}

Yu, Shu-Hong ^{[2
]}

Heggen, Marc ^{[3
]}

Strasser, Peter ^{[1
]}

机构：

[1] Tech Univ Berlin, Dept Chem, Div Chem Engn, Electrochem Energy Catalysis & Mat Sci Lab, D-10623 Berlin, Germany

[2] Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Div Nanomat & Chem, Hefei 230026, Peoples R China

[3] Forschungszentrum Julich GmbH, Ernst Ruska Ctr Microscopy & Spect Electrons, D-52425 Julich, Germany

来源：

NANO LETTERS | 2012年 / 12卷 / 11期

关键词：

Surface composition; PtNi octahedra; oxygen reduction reaction; ligand control; FUEL-CELL ELECTROCATALYSTS; SHAPE-CONTROLLED SYNTHESIS; BIMETALLIC NANOPARTICLES; SKIN SURFACES; NANOCRYSTALS; CHEMISTRY; DIFFUSION; FUTURE; SCALE;

D O I：

10.1021/nl3032795

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We demonstrate how shape selectivity and optimized surface composition result in exceptional oxygen reduction activity of octahedral PtNi nanoparticles (NPs). The alloy octahedra were obtained by utilizing a facile, completely surfactant-free solvothermal synthesis. We show that the choice of precursor ligands controls the shape, while the reaction time tunes the surface Pt:Ni composition. The 9.5 nm sized PtNi octahedra reached a 10-fold surface area-specific (similar to 3.14 mA/cm(Pt)(2)) as well as an unprecedented 10-fold Pt mass based (similar to 1.45 A/mg(Pt)) activity gain over the state-of-art Pt electrocatalyst, approaching the theoretically predicted limits.

引用

页码：5885 / 5889

页数：5

共 42 条

[11] Electrocatalysis on bimetallic surfaces: Modifying catalytic reactivity for oxygen reduction by voltammetric surface dealloying [J].

Koh, Shirlaine ;

Strasser, Peter .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2007, 129 (42) :12624-+

[12] One-Step Synthesis of Au@Pd Core-Shell Nanooctahedron [J].

Lee, Young Wook ;

Kim, Minjung ;

Kim, Zee Hwan ;

Han, Sang Woo .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2009, 131 (47) :17036-+

[13] Oxygen Reduction Activity of Dealloyed Pt1-xNix Catalysts [J].

Liu, Gary Chih-Kang ;

Stevens, D. A. ;

Burns, J. C. ;

Sanderson, R. J. ;

Vernstrom, George ;

Atanasoski, R. T. ;

Debe, M. K. ;

Dahn, J. R. .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2011, 158 (08) :B919-B926

[14] Size-Dependent Morphology of Dealloyed Bimetallic Catalysts: Linking the Nano to the Macro Scale [J].

Oezaslan, Mehtap ;

Heggen, Marc ;

Strasser, Peter .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2012, 134 (01) :514-524

[15] N,N-Dimethylformamide as a Reaction Medium for Metal Nanoparticle Synthesis [J].

Pastoriza-Santos, Isobel ;

Liz-Marzan, Luis M. .

ADVANCED FUNCTIONAL MATERIALS, 2009, 19 (05) :679-688

[16] Designer platinum nanoparticles: Control of shape, composition in alloy, nanostructure and electrocatalytic property [J].

Peng, Zhenmeng ;

Yang, Hong .

NANO TODAY, 2009, 4 (02) :143-164

[17] Preparation of single-crystalline platinum nanowires with small diameters under mild conditions [J].

Shen, Zhongrong ;

Yamada, Mami ;

Miyake, Mikio .

CHEMICAL COMMUNICATIONS, 2007, (03) :245-247

[18] Study of nucleation and growth in the organometallic synthesis of magnetic alloy nanocrystals:: The role of nucleation rate in size control of CoPt3 nanocrystals [J].

Shevchenko, EV ;

Talapin, DV ;

Schnablegger, H ;

Kornowski, A ;

Festin, Ö ;

Svedlindh, P ;

Haase, M ;

Weller, H .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2003, 125 (30) :9090-9101

[19] Structure/Processing/Properties Relationships in Nanoporous Nanoparticles As Applied to Catalysis of the Cathodic Oxygen Reduction Reaction [J].

Snyder, Joshua ;

McCue, Ian ;

Livi, Ken ;

Erlebacher, Jonah .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2012, 134 (20) :8633-8645

[20] Efficient oxygen reduction fuel cell electrocatalysis on voltammetrically dealloyed Pt-Cu-Co nanoparticles [J].

Srivastava, Ratndeep ;

Mani, Prasanna ;

Hahn, Nathan ;

Strasser, Peter .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2007, 46 (47) :8988-8991

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