Effect of carbon surface oxidation on platinum supported carbon particles on the performance of gas diffusion electrodes for the oxygen reduction reaction

被引：6

作者：

Golikand, Ahmad Nozad ^{[1
,2
]}

Lohrasbi, Elaheh ^{[2
]}

Maragheh, Mohammad Ghannadi ^{[1
]}

Asgari, Mehdi ^{[1
]}

机构：

[1] NSTRI, Dept Chem, Jaber Ibne Hayan Res Lab, Tehran, Iran

[2] NSTRI, Sch Mat, Corrosion Lab, Tehran, Iran

来源：

JOURNAL OF APPLIED ELECTROCHEMISTRY | 2008年 / 38卷 / 06期

关键词：

surface oxidation; carbon supported catalyst; gas diffusion electrode; catalyst layer; oxygen reduction reaction;

D O I：

10.1007/s10800-008-9531-5

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The effect of carbon surface oxidation on platinum supported carbon particles (Pt/C) with nitric acid was investigated by cyclic voltammetry, electrochemical impedance spectroscopy, polarization experiments and chronoamperometry. Cyclic voltammograms, polarization curves and electrochemical impedance spectra showed that the treated catalyst had much larger active surface area and higher ionic conductivity than the untreated catalyst, and provided enhanced performance for oxygen reduction. The formation of acidic groups was examined by IR spectra. The Pt/C surface oxidation had a large effect on the performance of a gas diffusion electrode for oxygen reduction reaction.

引用

页码：869 / 874

页数：6

共 27 条

[1] Influence of Nafion loading in the catalyst layer of gas-diffusion electrodes for PEFC [J].

Antolini, E ;

Giorgi, L ;

Pozio, A ;

Passalacqua, E .

JOURNAL OF POWER SOURCES, 1999, 77 (02) :136-142

[2]

ANTONUCCI PL, 1994, J APPL ELECTROCHEM, V24, P58

[3] Electrochemical impedance study of electrode-membrane assemblies in PEM fuel cells I.: Electro-oxidation of H2 and H2/CO mixtures on Pt-based gas-diffusion electrodes [J].

Ciureanu, M ;

Wang, H .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1999, 146 (11) :4031-4040

[4] Activated carbons prepared from rice hull by one-step phosphoric acid activation [J].

Guo, Yanping ;

Rockstraw, David A. .

MICROPOROUS AND MESOPOROUS MATERIALS, 2007, 100 (1-3) :12-19

[5] The preparation of stable metal nanoparticles on carbon nanotubes whose surfaces were modified during production [J].

Jiang, Hongjin ;

Zhu, Lingbo ;

Moon, Kyoung-Sik ;

Wong, C. P. .

CARBON, 2007, 45 (03) :655-661

[6] Influence of plasma treatment of carbon blacks on electrochemical activity of Pt/carbon blacks catalysts for DMFCs [J].

Kim, Seok ;

Cho, Mi-Hwa ;

Lee, Jae-Rock ;

Park, Soo-Jin .

JOURNAL OF POWER SOURCES, 2006, 159 (01) :46-48

[7]

Larminie James., 2000, FUEL CELL SYSTEMS EX, DOI DOI 10.1002/9781118878330

[8] Characterization of ionic conductivity profiles within proton exchange membrane fuel cell gas diffusion electrodes by impedance spectroscopy [J].

Lefebvre, MC ;

Martin, RB ;

Pickup, PG .

ELECTROCHEMICAL AND SOLID STATE LETTERS, 1999, 2 (06) :259-261

[9] Electro-catalytic oxidation of CO on Pt catalyst supported on carbon nanotubes pretreated with oxidative acids [J].

Li, Li ;

Wu, Gang ;

Xu, Bo-Qing .

CARBON, 2006, 44 (14) :2973-2983

[10] AUTOMATIC POTENTIOMETRIC TITRATION OF SURFACE ACIDITY OF CARBON-BLACK [J].

MATSUMURA, Y ;

HAGIWARA, S ;

TAKAHASHI, H .

CARBON, 1976, 14 (03) :163-167

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