Hollow core/mesoporous shell carbon capsule as an unique cathode catalyst support in direct methanol fuel cell

被引：78

作者：

Kim, Jung Ho ^{[1
]}

Fang, Baizeng ^{[1
]}

Yoon, Suk Bon ^{[1
]}

Yu, Jong-Sung ^{[1
]}

机构：

[1] Korea Univ, Res Team BK21, Dept Adv Mat Chem, Jochiwon 339700, ChungNam, South Korea

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2009年 / 88卷 / 3-4期

关键词：

Hollow core mesoporous shell carbon; Electrocatalyst; Catalyst support; Oxygen reduction reaction; Direct methanol fuel cell; PT-RU CATALYSTS; MACROPOROUS CORE; SPHERICAL CARBON; PLATINUM; ELECTROCATALYSTS; PERFORMANCE; NANOTUBES; ELECTRODE; NANOPARTICLES; FABRICATION;

D O I：

10.1016/j.apcatb.2008.11.005

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：

Hollow core mesoporous shell (HCMS) carbon has been explored for the first time as a cathode catalyst support in direct methanol fuel cells (DMFCs). The HCMS carbon consisting of discrete spherical particles possesses unique structural characteristics including large specific surface area and mesoporous volume and well-developed interconnected void structure, which are highly desired for a cathode catalyst support in low temperature fuel cells. Significant enhancement in the electrocatalytic activity toward oxygen reduction reaction has been achieved by the HCMS carbon-supported Pt nanoparticles compared with carbon black Vulcan XC-72-supported ones in the DMFC. In addition, much higher power was delivered by the Pt/HCMS catalysts (i.e., corresponding to an enhancement of ca. 91-128% in power density compared with that of Pt/Vulcan), suggesting that HCMS carbon is a unique cathode catalyst support in direct methanol fuel cell. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：368 / 375

页数：8

共 42 条

[1] Oxygen reduction reaction kinetics and mechanism on platinum nanoparticles inside Nafion® [J].

Antoine, O ;

Bultel, Y ;

Durand, R .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 2001, 499 (01) :85-94

[2]

Aricò AS, 2001, FUEL CELLS, V1, P133

[3] Graphite nanofibers as an electrode for fuel cell applications [J].

Bessel, CA ;

Laubernds, K ;

Rodriguez, NM ;

Baker, RTK .

JOURNAL OF PHYSICAL CHEMISTRY B, 2001, 105 (06) :1115-1118

[4] Water-neutral micro direct-methanol fuel cell (DMFC) for portable applications [J].

Blum, A ;

Duvdevani, T ;

Philosoph, M ;

Rudoy, N ;

Peled, E .

JOURNAL OF POWER SOURCES, 2003, 117 (1-2) :22-25

[5]

Britto PJ, 1999, ADV MATER, V11, P154, DOI 10.1002/(SICI)1521-4095(199902)11:2<154::AID-ADMA154>3.0.CO

[6]

2-B

[7]

Buchel G, 1998, ADV MATER, V10, P1036, DOI 10.1002/(SICI)1521-4095(199809)10:13<1036::AID-ADMA1036>3.0.CO

[8]

2-Z

[9] Highly efficient anode electrode materials for direct methanol fuel cell prepared with ordered and disordered arrays of carbon nanofibers [J].

Chai, GS ;

Yoon, SB ;

Yu, JS .

CARBON, 2005, 43 (14) :3028-3031

[10] Spherical carbon capsules with hollow macroporous core and mesoporous shell structures as a highly efficient catalyst support in the direct methanol fuel cell [J].

Chai, GS ;

Yoon, SB ;

Kim, JH ;

Yu, JS .

CHEMICAL COMMUNICATIONS, 2004, (23) :2766-2767

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