Fabrication of high performance carbon-supported ternary Pd-Cu-Fe electrocatalysts for formic acid electrooxidation via partly galvanic sacrifice of tunable binary Cu-Fe alloy templates
Fabrication of high performance carbon-supported ternary Pd-Cu-Fe electrocatalysts for formic acid electrooxidation via partly galvanic sacrifice of tunable binary Cu-Fe alloy templates
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DOI：
10.1016/j.electacta.2016.02.130
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发表时间：
2016-04
影响因子：
6.6
通讯作者：
Baoyun Yu;Wenjuan Wen;Wenpeng Li;Yang Yang-Yang;Dandan Hou;Changshuo Liu
中科院分区：
文献类型：
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作者：
Baoyun Yu;Wenjuan Wen;Wenpeng Li;Yang Yang-Yang;Dandan Hou;Changshuo Liu
采用用Pd~(2+)部分刻蚀载碳二元可调铜铁合金模板(Cu9Fe1、Cu8Fe2、Cu7Fe3)的方法制备了载炭Pd-Cu-Fe催化剂(Pd-Cu-Fe/C)。以三种模板剂为原料制得的Pd-Cu-Fe催化剂对甲酸的氧化性能均好于Pd和Pt。与Pd/C催化剂相比，Cu9Fe1、Cu8Fe2和Cu7Fe3催化剂的阳极峰电位分别负移了51 mV、88 mV和110 mV。其中，以Cu7Fe3为模板的催化剂表现出最高的催化活性和较高的稳定性，是甲酸燃料电池的良好候选者。用X-射线衍射分析、X-射线光电子能谱、电感耦合等离子体原子发射光谱、能谱仪、透射电子显微镜和电化学测试对Pd-Cu-Fe/C三元催化剂的性能进行了关联。
Carbon loaded Pd-Cu-Fe catalysts (Pd-Cu-Fe/C) were fabricated with a novel strategy of partly etching carbon loaded tunable binary Cu-Fe alloy templates (Cu9Fe1, Cu8Fe2, Cu7Fe3) with Pd2+. The obtained Pd-Cu-Fe catalysts started from all the three templates showed better performance for formic acid oxidation than Pd and Pt. Compared with Pd/C catalysts, the anodic peak potential at the catalysts started from Cu9Fe1, Cu8Fe2and Cu7Fe3shifted toward negative value by 51 mV, 88 mV and 110 mV, respectively. Among them, catalyst started from Cu7Fe3template exhibited the highest catalytic activity and a high stability, suggesting that it is a good candidate for the formic acid fuel cell. The characteristics of the Pd-Cu-Fe/C ternary catalysts were correlated using X-ray diffraction analysis, X-ray photoelectron spectroscopy, inductively coupled plasma-atomic emission spectrometry, energy dispersive spectrometer, transmission electron microscopy, and electrochemical measurements.