Synthesis and performance of PdAu/ITO electrocatalysts in urea oxidation reaction

被引：0

作者：

Abreu, Isabely M. G. ^{[1
]}

Maia, Victoria A. ^{[1
]}

de Souza, Rodrigo F. B. ^{[1
]}

Neto, Almir O. ^{[1
]}

机构：

[1] CNEN SP, IPEN, Inst Pesquisas Energert & Nucl, Av Prof Lineu Prestes,2242 Cidade Univ, BR-05508900 Sao Paulo, SP, Brazil

来源：

INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE | 2024年 / 19卷 / 10期

关键词：

PdAu electrocatalys; ITO supports; Urea oxidation; Fuel cell; Cyclic voltammetry; BOROHYDRIDE REDUCTION PROCESS;

D O I：

10.1016/j.ijoes.2024.100810

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

PdAu electrocatalysts were prepared in different atomic compositions supported on ITO by sodium Borohydride process. XRD results show intense crystalline peaks related to ITO, which may mask the appearance of less crystalline Pd or Au phases. Transmission results indicate agglomeration of palladium and gold nanoparticles on the support, a phenomenon compatible with metal oxide supports. Cyclic voltammograms in the absence of urea display characteristics commonly observed for PdAu electrodes, with an increase in oxygenated species compared to pure Pd or Au. Voltammograms in the presence of urea showed oxidation processes and lower current values, indicating catalyst deactivation processes. PdAu 75:25 demonstrated higher power density values compared to other prepared electrocatalysts, suggesting a synergy between Pd and Au for urea oxidation reaction.

引用

页数：5

共 21 条

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