Direct Oxidation of Ethylene Glycol on PtSn/C for Application in Alkaline Fuel Cell

被引：5

作者：

de Souza, Leticia L. ^{[1
]}

Neto, Almir Oliveira ^{[2
]}

Forbicini, Christina A. L. G. de O. ^{[1
]}

机构：

[1] Inst Pesquisas Energet & Nucl, Ctr Quim & Meio Ambiente, Av Prof Lineu Prestes,2242 Cidade Univ, BR-05508000 Sao Paulo, SP, Brazil

[2] Inst Pesquisas Energet & Nucl, Ctr Celulas Combustivel & Hidrogenio, Av Prof Lineu Prestes,2242 Cidade Univ, BR-05508000 Sao Paulo, SP, Brazil

来源：

INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE | 2017年 / 12卷 / 12期

关键词：

PtSn/C electrocatalysts; ethylene glycol oxidation; alkaline fuel cell; ATR-FTIRS in situ; HYDROGEN OXIDATION; METHANOL ELECTROOXIDATION; ETHANOL ELECTROOXIDATION; ELECTROCATALYSIS; CATALYSTS; PERFORMANCE; ACID; ELECTRODES;

D O I：

10.20964/2017.12.57

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

PtSn/C electrocatalysts with different molar ratios were synthesized by borohidrate process for glycol ethylene oxidation. All electrocatalysts were, also, characterized by X-ray diffraction (XRD), transmission electronic microscopy (TEM), attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIRS), energy dispersive X-ray (EDX), while the electrochemical activities of those materials were evaluated by cyclic voltammetry, chronoamperometry and polarization curves in Direct Ethylene Glycol Alkaline Fuel Cells (DEGAFC). TEM results for PtSn/C electrocatalysts showed crystallite size of 4 nm. The curves of power density indicated that PtSn/C, with molar ratio of 70:30, presented the best results for glycol ethylene oxidation, in comparison with other alternatives prepared. These results may be associated to the selectivity to form oxalate or a bifunctional mechanism (oxygenated species from Sn).

引用

页码：11855 / 11874

页数：20

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