Platinum dendrites with controlled sizes for oxygen reduction reaction

被引：45

作者：

Kim, Cheonghee ^{[1
]}

Oh, Jong-Gil ^{[1
]}

Kim, Yong-Tae ^{[2
]}

Kim, Hansung ^{[1
]}

Lee, Hyunjoo ^{[1
]}

机构：

[1] Yonsei Univ, Dept Chem & Biomol Engn, Specialized Grad Sch Hydrogen & Fuel Cell, Seoul 120749, South Korea

[2] Pusan Natl Univ, Sch Mech Engn, Pusan 609735, South Korea

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2010年 / 12卷 / 11期

关键词：

Platinum; Dendrites; Oxygen reduction reaction; Activity; Durability; CARBON NANOTUBES; FUEL-CELL; NANOPARTICLES; CATALYSTS;

D O I：

10.1016/j.elecom.2010.09.004

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Platinum dendrites were synthesized with the controlled sizes of 13-53 nm, and their electrocatalytic properties were evaluated for oxygen reduction reaction (ORR). Dendrites showed a superior activity for ORR and better selectivity for the production of H2O, compared to commercial E-tek catalysts. Durability was also tested by estimating the change in electrochemically active surface area (ECSA) after extended periods of oxygen reduction. Dendrites with larger sizes showed improved durability. (C) 2010 Elsevier B.V. All rights reserved.

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页码：1596 / 1599

页数：4

相关论文

共 18 条

[1]

[Anonymous], 2001, ELECTROCHEMICAL METH

[2] Carbons as supports for industrial precious metal catalysts [J].

Auer, E ;

Freund, A ;

Pietsch, J ;

Tacke, T .

APPLIED CATALYSIS A-GENERAL, 1998, 173 (02) :259-271

[3] Shaping binary metal nanocrystals through epitaxial seeded growth [J].

Habas, Susan E. ;

Lee, Hyunjoo ;

Radmilovic, Velimir ;

Somorjai, Gabor A. ;

Yang, Peidong .

NATURE MATERIALS, 2007, 6 (09) :692-697

[4] Shape effect of Pt nanocrystals on electrocatalytic hydrogenation [J].

Kim, Cheonghee ;

Lee, Hyunjoo .

CATALYSIS COMMUNICATIONS, 2009, 11 (01) :7-10

[5] Change in the catalytic reactivity of Pt nanocubes in the presence of different surface-capping agents [J].

Kim, Cheonghee ;

Lee, Hyunjoo .

CATALYSIS COMMUNICATIONS, 2009, 10 (09) :1305-1309

[6] Fine size control of platinum on carbon nanotubes: From single atoms to clusters [J].

Kim, YT ;

Ohshima, K ;

Higashimine, K ;

Uruga, T ;

Takata, M ;

Suematsu, H ;

Mitani, T .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2006, 45 (03) :407-411

[7] Role of Surface Steps of Pt Nanoparticles on the Electrochemical Activity for Oxygen Reduction [J].

Lee, Seung Woo ;

Chen, Shuo ;

Suntivich, Jin ;

Sasaki, Kotaro ;

Adzic, Radoslav R. ;

Shao-Horn, Yang .

JOURNAL OF PHYSICAL CHEMISTRY LETTERS, 2010, 1 (09) :1316-1320

[8] A review of anode catalysis in the direct methanol fuel cell [J].

Liu, HS ;

Song, CJ ;

Zhang, L ;

Zhang, JJ ;

Wang, HJ ;

Wilkinson, DP .

JOURNAL OF POWER SOURCES, 2006, 155 (02) :95-110

[9] OXYGEN REDUCTION ON PLATINUM LOW-INDEX SINGLE-CRYSTAL SURFACES IN SULFURIC-ACID-SOLUTION - ROTATING RING-PT(HKL) DISK STUDIES [J].

MARKOVIC, NM ;

GASTEIGER, HA ;

ROSS, PN .

JOURNAL OF PHYSICAL CHEMISTRY, 1995, 99 (11) :3411-3415

[10] Synthesis and Oxygen Reduction Electrocatalytic Property of Pt-on-Pd Bimetallic Heteronanostructures [J].

Peng, Zhenmeng ;

Yang, Hong .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2009, 131 (22) :7542-+