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

被引：26
|
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
收藏
页码：819 / 826
页数：8
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