| 直接甲酸燃料电池炭载Pd阳极催化剂的稳定性 |
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| 引用本文： | 沈娟章,陈滢,杨改秀,唐亚文,陆天虹. 直接甲酸燃料电池炭载Pd阳极催化剂的稳定性[J]. 高等学校化学学报, 2011, 32(11): 2626-2629 |
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| 作者姓名： | 沈娟章 陈滢 杨改秀 唐亚文 陆天虹 |
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| 作者单位： | 1. 江苏省新型动力电池重点实验室, 江苏省生物功能材料重点实验室, 南京师范大学化学与环境科学学院, 南京 210097; 2. 江苏科技大学张家港校区机械与冶金工程学院, 张家港 215600; 3. 中国科学院广州能源研究所, 中国科学院可再生能源与天然气水合物重点实验室, 广州 510640; 4. 中国科学院长春应用化学研究所, 长春 130022 |
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| 基金项目： | 国家自然科学基金(批准号:20873065,21073094)资助 |
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| 摘 要： | 用X射线衍射和电化学方法研究了在甲酸溶液中浸泡一段时间后的Pd/C催化剂的结构和电催化性能, 发现在甲酸溶液中浸泡15 d后, Pd/C催化剂中Pd粒子的相对结晶度由1.73增加到3.34, 平均粒径由4.4 nm降低到1.8 nm, 对甲酸氧化的电催化活性和稳定性降低, 甲酸氧化的峰电流密度由9.3 mA/cm2降低到6.7 mA/cm2. 这可能是由Pd/C催化剂中的Pd在甲酸中会有一定的溶解和Pd/C催化剂能催化分解甲酸引起的.
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| 关 键 词： | 炭载Pd催化剂 甲酸氧化 甲酸分解 甲酸浸泡 直接甲酸燃料电池 |
| 收稿时间： | 2010-12-30 |
Stability of Carbon Supported Pd/C Catalyst in Direct Formic Acid Fuel Cell |
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| SHEN Juan-Zhang,CHEN Ying,YANG Gai-Xiu,TANG Ya-Wen,LU Tian-Hong. Stability of Carbon Supported Pd/C Catalyst in Direct Formic Acid Fuel Cell[J]. Chemical Research In Chinese Universities, 2011, 32(11): 2626-2629 |
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| Authors: | SHEN Juan-Zhang CHEN Ying YANG Gai-Xiu TANG Ya-Wen LU Tian-Hong |
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| Affiliation: | SHEN Juan-Zhang1,CHEN Ying2,YANG Gai-Xiu3,TANG Ya-Wen1,LU Tian-Hong1,4 (1.Jiangsu Key Laboratory of New Power Batteries,Jiangsu Key Laboratory of Biofunctional Materials,School of Chemistry and Environment Science,Nanjing Normal University,Nanjing 210097,China,2.School of Mechanical and Metallurgical Engineering,Jiangsu University of Science and Technology,Zhangjiagang 215600,3.Key Laboratory of Renewable Energy and Gas Hydrate,Guangzhou Institute of Energy Conversion,Chinese Academy of Siences,Gua... |
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| Abstract: | In order to understand the reason for the poor electrocatalytic stability of the Pd/C catalyst for formic acid oxidation,the changes in the structure and the electrocatalytic performance of the Pd/C catalyst after dipping in the formic acid solution for a certain time were investigated using X-ray diffraction spectroscopy and electrochemical methods.It is found that the relative crystallinity of the Pd particles of Pd/C catalyst increases from 1.73 to 3.34 and the average size decreases from 4.4 nm to 1.8 n... |
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| Keywords: | Carbon supported Pd catalyst Formic acid oxidation Formic acid decomposition Dipping in formic acid Direct formic acid fuel cell |
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