| CocorePdshell/C核壳型纳米粒子电催化氧还原性能 |
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| 引用本文： | 刘世斌,李蓉,张忠林,郝晓刚,段东红,卫国强,马艳华.CocorePdshell/C核壳型纳米粒子电催化氧还原性能[J].太原理工大学学报,2011,42(5):451-456,461. |
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| 作者姓名： | 刘世斌 李蓉 张忠林 郝晓刚 段东红 卫国强 马艳华 |
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| 作者单位： | 太原理工大学洁净化工研究所,太原,030024 |
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| 基金项目： | 国家自然科学基金资助项目(20676088); 教育部博士点基金资助项目(20091402110009) |
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| 摘 要： | 应用胶体粒子模板法制备不同壳层厚度的CocorePdshell纳米电催化剂。TEM、XRD和EDS证实,CocorePdshell纳米粒子基本为球形,面心立方晶型(fcc)Pd成功包覆在纳米金属Co的表面,其中,Co1Pd2纳米粒子平均直径约10 nm且粒径分布较窄。动电位、交流阻抗、循环伏安及原位傅里叶变换红外反射光谱等电化学测试结果表明:与Pd/C相比,CocorePdshell/C纳米粒子对氧还原反应(ORR)的活性有明显的提高,甚至接近于Pt/C;抗甲醇能力非常优异,对甲醇氧化几乎无活性;不同壳层厚度催化剂中,以Co1Pd2/C催化剂的活性最高,在0.5 mol/L H2SO4中氧还原峰电流密度可达175.5 mA/mg,比Pt/C的要高出20 mA/mg。
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| 关 键 词： | CocorePdshell 电催化 氧还原 抗甲醇 直接甲醇燃料电池 |
Performance of CocorePdshell/C Nanoparticles for Electrocatalytic Reduction of Oxygen |
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| LIU Shi-bin,LI Rong,ZHANG Zhong-lin,HAO Xiao-gang,DUAN Dong-hong,WEI Guo-qiang,MA Yan-hua.Performance of CocorePdshell/C Nanoparticles for Electrocatalytic Reduction of Oxygen[J].Journal of Taiyuan University of Technology,2011,42(5):451-456,461. |
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| Authors: | LIU Shi-bin LI Rong ZHANG Zhong-lin HAO Xiao-gang DUAN Dong-hong WEI Guo-qiang MA Yan-hua |
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| Institution: | LIU Shi-bin,LI Rong,ZHANG Zhong-lin,HAO Xiao-gang,DUAN Dong-hong,WEI Guo-qiang,MA Yan-hua(Institute of Clean Technique for Chemical Engineering,Taiyuan University of Technology,Taiyuan 030024,China) |
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| Abstract: | The CocorePdshell nanoparticles with various shell thickness were prepared by template synthesis of colloid particles,and characterized by XRD,TEM and EDS.The results show that CocorePdshell nanoparticles are spherical and the Co nanoparticles act as seeds to guide the growth of face-centered-cubic Pd.The mean particle diameter of Co1Pd2 is about 10 nm with a relatively narrow size distribution.The electrocatalytic activities of the catalysts for oxygen reduction reaction(ORR) and methanol tolerance were ch... |
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| Keywords: | CocorePdshell electrocatalysis oxygen reduction methanol resistant property direct methanol fuel cell |
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