Fabrication and characterization of alkaline leached CuZn/Cu electrode as anode material for direct methanol fuel cell

被引：28

作者：

Doner, Ali ^{[1
]}

Solmaz, Ramazan ^{[2
]}

Kardas, Gulfeza ^{[3
]}

机构：

[1] Sirnak Univ, Energy Syst Engn Dept, Fac Engn, TR-73000 Sirnak, Turkey

[2] Bingol Univ, Sci & Letters Fac, Dept Chem, TR-12000 Bingol, Turkey

[3] Cukurova Univ, Sci & Letters Fac, Dept Chem, TR-01330 Adana, Turkey

来源：

ENERGY | 2015年 / 90卷

关键词：

Fuel cells; Methanol electro-oxidation; Catalysis; CuZn binary coatings; HYDROGEN EVOLUTION; ELECTROCATALYTIC OXIDATION; ELECTROCHEMICAL IMPEDANCE; CATHODE MATERIAL; GLASSY-CARBON; DESIGN ISSUES; COPPER; GRAPHITE; BEHAVIOR; NI;

D O I：

10.1016/j.energy.2015.06.058

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Alkaline-leached CuZn binary coatings were electrochemically prepared on a copper substrate and characterized for methanol electro-oxidation in alkaline solution. The electrodes were characterized by SEM (scanning electron microscopy) and EDX (energy dispersive X-ray) spectroscopy. CV (Cyclic voltammetry), EIS (electrochemical impedance spectroscopy) and CA (chronoamperometry) were used to investigate electrochemical activity of the electrodes. The effects of some parameters such as surface coverage (Gamma), anodic electron transfer coefficient (alpha(a)) and rate constant (k(s)) on the electro-oxidation of methanol were determined. It was found that the alkaline leached CuZn/Cu electrode has significantly better rates of methanol electro-oxidation. The relative electrocatalytic efficiency is as follows: CuZn/Cu > Cu/Cu > Cu. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：1144 / 1151

页数：8

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