| 还原热处理条件对Pt-Fe/C 合金催化剂性能的影响 |
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| 引用本文： | 符蓉,郑俊生,王喜昭,马建新.还原热处理条件对Pt-Fe/C 合金催化剂性能的影响[J].物理化学学报,2011,27(9):2141-2147. |
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| 作者姓名： | 符蓉 郑俊生 王喜昭 马建新 |
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| 作者单位： | 1. Clean Energy Automotive Engineering Center, Tongji University (Jiading Campus), Shanghai 201804, P. R. China;
2. School of Resource and Environment Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China;
3. School of Automotive Studies, Tongji University (Jiading Campus), Shanghai 201804, P. R. China |
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| 基金项目： | 国家自然科学基金，上海市青年科技启明星计划，上海市重点学科 |
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| 摘 要： | 采用脉冲微波辅助化学还原-含氢气体热处理法制备了质子交换膜燃料电池(PEMFC)用Pt-Fe/C合金催化剂.通过电感耦合等离子体(ICP)检测了金属元素含量,用透射电镜(TEM)、X射线衍射(XRD)和X射线光电子能谱(XPS)等技术对催化剂的微观结构和形貌进行了表征,并利用循环伏安(CV)法评价了催化剂催化氧还原性能.结果表明,脉冲微波辅助化学还原法是一种快速制备粒径较小、分布均匀的Pt-Fe/C催化剂的有效方法,含氢气体热处理对提高催化剂活性有重要作用.还原热处理温度和时间对催化剂活性也有很大影响.经过500°C还原热处理后的催化剂活性比还原热处理之前的催化剂性能有很大提高.TEM和XRD结果显示,Pt-Fe/C-500-3h的纳米粒子均匀地分散在碳载体上,平均粒径为1.8nm,500°C下热处理3h的催化剂有最大的电化学表面积(ESA),为55.14m2·g-1.
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| 关 键 词： | 脉冲微波辅助化学还原 燃料电池 Pt-Fe/C催化剂 |
| 收稿时间： | 2011-04-01 |
| 修稿时间： | 2011-06-13 |
Effect of the Reduction Heat-Treatment Condition on the Performance of Pt-Fe/C Alloy Catalyst |
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| FU Rong,ZHENG Jun-Sheng,WANG Xi-Zhao,MA Jian-Xin.Effect of the Reduction Heat-Treatment Condition on the Performance of Pt-Fe/C Alloy Catalyst[J].Acta Physico-Chimica Sinica,2011,27(9):2141-2147. |
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| Authors: | FU Rong ZHENG Jun-Sheng WANG Xi-Zhao MA Jian-Xin |
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| Institution: | 1. Clean Energy Automotive Engineering Center, Tongji University (Jiading Campus), Shanghai 201804, P. R. China;
2. School of Resource and Environment Engineering, East China University of Science and Technology, Shanghai 200237, P. R. China;
3. School of Automotive Studies, Tongji University (Jiading Campus), Shanghai 201804, P. R. China |
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| Abstract: | Pt-Fe/C catalyst for proton exchange membrane fuel cell(PEMFC) was prepared by a pulse-microwave assisted chemical reduction heat-treatment synthesis method.The elemental content was tested by inductively coupled plasma(ICP).The microstructure and morphology of the as-prepared catalyst were characterized by transmission electron microscopy(TEM),X-ray diffraction(XRD),and X-ray photoelectron spectroscopy(XPS).The electrocatalytic performance was measured by cyclic voltammetry(CV).The results indicate that pu... |
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| Keywords: | Pulse-microwave assisted chemical reduction Fuel cell Pt-Fe/C catalyst |
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