Ethanol electrooxidation on activated graphite supported platinum-nickel in alkaline medium

被引：28

作者：

Chelaghmia, Mohamed Lyamine ^{[1
]}

Nacef, Mouna ^{[1
]}

Affoune, Abed Mohamed ^{[1
]}

机构：

[1] Univ 08 Mai 1945 Guelma, Dept Genie Procedes, Lab Anal Ind & Genie Mat, Guelma 24000, Algeria

来源：

JOURNAL OF APPLIED ELECTROCHEMISTRY | 2012年 / 42卷 / 10期

关键词：

Fuel cells; Electrodeposition; Platinum-nickel; Ethanol electrooxidation; Cyclic voltammetry; ORIENTED PYROLYTIC-GRAPHITE; METHANOL ELECTROOXIDATION; FUEL-CELLS; ALLOY NANOPARTICLES; CARBON NANOTUBES; GLASSY-CARBON; OXIDATION; ELECTRODEPOSITION; CATALYSTS; ELECTROCATALYST;

D O I：

10.1007/s10800-012-0440-2

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

In this study, activated graphite-supported platinum (Pt/C), nickel (Ni/C) and platinum-nickel (Pt-Ni/C) were prepared by electrodeposition technique using solutions containing hexachloroplatinic acid and/or nickel sulphate. Ethanol electrooxidation was investigated on Pt/C, Ni/C and Pt-Ni/C electrocatalysts by cyclic voltammetry and chronoamperometry in aqueous alkaline solution containing 1.0 M NaOH and 2.0 M C2H5OH. The electrocatalytic activities and stabilities of the electrocatalysts were discussed. The results showed that ethanol is oxidized anodically on Ni/C. This reaction occured simultaneously with the anodic oxidation of nickel hydroxide (Ni(OH)(2)) into nickel oxy-hydroxide (NiOOH). It is also found that Pt-Ni/C electrocatalytic characteristics were better than Pt/C. The Pt-Ni/C electrocatalyst exhibited excellent activity and enhanced stability than Pt/C. It seems that Pt-Ni/C is a promising electrocatalyst toward ethanol electrooxidation in alkaline medium for fuel cells applications.

引用

页码：819 / 826

页数：8

共 39 条

[1] ELECTROOXIDATION OF ALCOHOLS AND SUGARS CATALYZED ON A NICKEL-OXIDE MODIFIED GLASSY-CARBON ELECTRODE [J].

BERCHMANS, S ;

GOMATHI, H ;

RAO, GP .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1995, 394 (1-2) :267-270

[2] Electro-oxidation of ethanol on Pt, Rh, and PtRh electrodes. A study using DEMS and in-situ FTIR techniques [J].

de Souza, JPI ;

Queiroz, SL ;

Bergamaski, K ;

Gonzalez, ER ;

Nart, FC .

JOURNAL OF PHYSICAL CHEMISTRY B, 2002, 106 (38) :9825-9830

[3] How green are the chemicals used as liquid fuels in direct liquid-feed fuel cells? [J].

Demirci, Umit B. .

ENVIRONMENT INTERNATIONAL, 2009, 35 (03) :626-631

[4] Electrocatalytic oxidation of methanol at a nickel hydroxide/glassy carbon modified electrode in alkaline medium [J].

El-Shafei, AA .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1999, 471 (02) :89-95

[5] Homogeneous coating of graphite felt by nickel electrodeposition to achieve light nickel felts with high surface area [J].

Floner, Didier ;

Geneste, Florence .

ELECTROCHEMISTRY COMMUNICATIONS, 2007, 9 (09) :2271-2275

[6] PT ELECTRODEPOSITION ON PAN-BASED CARBON-FIBERS [J].

GEORGOLIOS, N ;

JANNAKOUDAKIS, D ;

KARABINAS, P .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1989, 264 (1-2) :235-245

[7] Nanostructure PtRu/MWNTs as anode catalysts prepared in a vacuum for direct methanol oxidation [J].

Gu, Yan-Juan ;

Wong, Wing-Tak .

LANGMUIR, 2006, 22 (26) :11447-11452

[8] Effect of Pb(II) on the morphology of platinum electrodeposited on highly oriented pyrolytic graphite [J].

Hill, AC ;

Patterson, RE ;

Sefton, JP ;

Columbia, MR .

LANGMUIR, 1999, 15 (11) :4005-4010

[9] Ethanol electro-oxidation on Pt/C and PtSn/C catalysts in alkaline and acid solutions [J].

Jiang, L. ;

Hsu, A. ;

Chu, D. ;

Chen, R. .

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2010, 35 (01) :365-372

[10] Promoting Effect of Ni in PtNi Bimetallic Electrocatalysts for the Methanol Oxidation Reaction in Alkaline Media: Experimental and Density Functional Theory Studies [J].

Jiang, Qian ;

Jiang, Luhua ;

Hou, Hongying ;

Qi, Jing ;

Wang, Suli ;

Sun, Gongquan .

JOURNAL OF PHYSICAL CHEMISTRY C, 2010, 114 (46) :19714-19722

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