Platinum-Coated Palladium Nanotubes as Oxygen Reduction Reaction Electrocatalysts

被引：100

作者：

Alia, Shaun M. ^{[1
,2
]}

Jensen, Kurt O. ^{[1
,2
]}

Pivovar, Bryan S. ^{[3
]}

Yan, Yushan ^{[1
,2
]}

机构：

[1] Univ Delaware, Dept Chem Engn, Newark, DE 19716 USA

[2] Univ Calif Riverside, Dept Chem & Environm Engn, Riverside, CA 92521 USA

[3] Natl Renewable Energy Lab, Golden, CO 80401 USA

来源：

ACS CATALYSIS | 2012年 / 2卷 / 05期

关键词：

proton exchange membrane fuel cells; platinum nanotubes; core shell catalysts; CRYSTALLITE SIZE; ALLOY; NANOSTRUCTURES; TRANSITION; CATALYSTS; SURFACES; KINETICS;

D O I：

10.1021/cs200682c

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：

Platinum (Pt) coated palladium (Pd) nanotubes (Pt/PdNTs) with a wall thickness of 6 nm, outer diameter of 60 nm, and length of 5-20 mu m are synthesized via the partial galvanic displacement of Pd nanotubes. Pt coatings are controlled to a loading of 9 (PtPd 9), 14 (PtPd 14), and 18 (PtPd 18) wt % and estimated to have a thickness of 1.1, 1.7, and 2.2 Pt atoms, respectively, if a uniform and continuous coating is assumed. Oxygen reduction experiments have been used to evaluate Pt/PdNTs, Pt nanotubes, Pd nanotubes, and supported Pt nanoparticle activity for proton exchange membrane fuel cell cathodes. The dollar and area (specific surface area) normalized ORR activities of Pt/PdNTs exceed the United States Department of Energy (DOE) targets. PtPd 9, PtPd 14, and PtPd 18 produce dollar activities of 10.4, 9.4, and 8.7 A$(-1), respectively; PtPd 9 exceeds the DOE dollar activity target (9.7 A$(-1)) by 7%. Pt/PdNTs further exceed the DOE area activity target by 40-43%.

引用

页码：858 / 863

页数：6

共 32 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] Porous Platinum Nanotubes for Oxygen Reduction and Methanol Oxidation Reactions [J].

Alia, Shaun M. ;

Zhang, Gang ;

Kisailus, David ;

Li, Dongsheng ;

Gu, Shuang ;

Jensen, Kurt ;

Yan, Yushan .

ADVANCED FUNCTIONAL MATERIALS, 2010, 20 (21) :3742-3746

[3]

[Anonymous], 2006, ANGEW CHEM-GER EDIT, DOI DOI 10.1002/ANGE.200504386

[4] Nanostructured Pt-alloy electrocatalysts for PEM fuel cell oxygen reduction reaction [J].

Bing, Yonghong ;

Liu, Hansan ;

Zhang, Lei ;

Ghosh, Dave ;

Zhang, Jiujun .

CHEMICAL SOCIETY REVIEWS, 2010, 39 (06) :2184-2202

[5] INFLUENCE OF PLATINUM CRYSTALLITE SIZE ON ELECTROCHEMICAL REDUCTION OF OXYGEN IN PHOSPHORIC-ACID [J].

BREGOLI, LJ .

ELECTROCHIMICA ACTA, 1978, 23 (06) :489-492

[6] One-dimensional nanostructures of metals: Large-scale synthesis and some potential applications [J].

Chen, Jingyi ;

Wiley, Benjamin J. ;

Xia, Younan .

LANGMUIR, 2007, 23 (08) :4120-4129

[7] Supportless Pt and PtPd nanotubes as electrocatalysts for oxygen-reduction reactions [J].

Chen, Zhongwei ;

Waje, Mahesh ;

Li, Wenzhen ;

Yan, Yushan .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2007, 46 (22) :4060-4063

[8] Experimental Methods for Quantifying the Activity of Platinum Electrocatalysts for the Oxygen Reduction Reaction [J].

Garsany, Yannick ;

Baturina, Olga A. ;

Swider-Lyons, Karen E. ;

Kocha, Shyam S. .

ANALYTICAL CHEMISTRY, 2010, 82 (15) :6321-6328

[9] Activity benchmarks and requirements for Pt, Pt-alloy, and non-Pt oxygen reduction catalysts for PEMFCs [J].

Gasteiger, HA ;

Kocha, SS ;

Sompalli, B ;

Wagner, FT .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2005, 56 (1-2) :9-35

[10] FePt Nanoparticles Assembled on Graphene as Enhanced Catalyst for Oxygen Reduction Reaction [J].

Guo, Shaojun ;

Sun, Shouheng .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2012, 134 (05) :2492-2495

← 1 2 3 4 →