| Ni掺杂的Pt/C碱性条件下电催化氧还原性能(英文) |
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| 引用本文： | 刘世斌,程变萍,池永庆,张忠林,郝晓刚,李一兵,段东红.Ni掺杂的Pt/C碱性条件下电催化氧还原性能(英文)[J].稀有金属材料与工程,2009,38(1). |
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| 作者姓名： | 刘世斌 程变萍 池永庆 张忠林 郝晓刚 李一兵 段东红 |
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| 作者单位： | 太原理工大学,山西,太原,030024 |
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| 摘 要： | 采用溶胶法制备了用于阴离子膜直接甲醇燃料电池的Pt-Ni/C阴极电催化剂,用XRD、XPS和TEM对催化剂进行了表征,电位线性扫描伏安法测试电化学活性及抗甲醇性.结果表明,制备的Pt-Ni合金颗粒分布均匀,粒径为3～5 nm;掺杂Ni元素可显著增加Pt的催化活性和抗甲醇性,在相同碱性电解液中,不同原子比例Pt-Ni/C的催化剂以Pt50Ni50/C的活性最高,抗甲醇性相对Pt/C有显著提高,在0.1 mol/L KOH溶液中其最大电流密度达到106 mA/mg,氧电还原起始过电位比Pt/C的小50 mV.
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| 关 键 词： | 碱性介质 氧电还原 催化活性 抗甲醇性 |
Performance of Pt/C Doped with Ni for Oxygen Electro-Reduction in Alkaline Media |
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| Liu Shibin,Cheng Bianping,Chi Yongqing,Zhang Zhonglin,Hao Xiaogang,Li Yibing,Duan Donghong.Performance of Pt/C Doped with Ni for Oxygen Electro-Reduction in Alkaline Media[J].Rare Metal Materials and Engineering,2009,38(1). |
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| Authors: | Liu Shibin Cheng Bianping Chi Yongqing Zhang Zhonglin Hao Xiaogang Li Yibing Duan Donghong |
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| Affiliation: | Liu Shibin,Cheng Bianping,Chi Yongqing,Zhang Zhonglin,Hao Xiaogang,Li Yibing,Duan Donghong Taiyuan University of Technology,Taiyuan 030024,China |
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| Abstract: | Carbon-supported Pt-Ni catalyst samples were prepared by the colloidal method and characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopic (XPS) and transmission electron microscopy (TEM). Potentiodynamic was used to measure the performance of the electro-catalysts for the oxygen electro-reduction. The results indicate that the Pt-Ni alloy particles are distributed homogeneously on the carbon surface, and their particle sizes are 3-5 nm. In the same alkali concentration solution, the acti... |
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| Keywords: | Pt-Ni/C alkaline media Pt-Ni/C oxygen electro-reduction catalytic activity methanol-tolerance |
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