| 大孔炭载Pd催化剂对甲酸氧化的电催化性能 |
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| 引用本文： | 刘春艳,徐斌,唐亚文,曹高萍,杨裕生,陆天虹.大孔炭载Pd催化剂对甲酸氧化的电催化性能[J].物理化学学报,2011,27(3):604-608. |
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| 作者姓名： | 刘春艳 徐斌 唐亚文 曹高萍 杨裕生 陆天虹 |
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| 作者单位： | 1. School of Chemistry and Environmental Science, Nanjing Normal University, Nanjing 210097, P. R. China;
2. Research Institute of Chemical Defense, Beijing 100191, P. R. China;
3. Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China |
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| 摘 要： | 用X射线能量色散谱(EDS)、X射线衍射(XRD)谱、拉曼光谱和电化学技术研究和比较了直接甲酸燃料电池(DFAFC)中Vulcan XC-72炭黑载Pd (Pd/XC)和大孔炭载Pd (Pd/MC)催化剂对甲酸氧化的电催化性能. 循环伏安曲线测量表明甲酸在Pd/XC和Pd/MC催化剂电极上主要氧化峰的峰电位基本相同, 在0.15 V左右, 但在Pd/MC催化剂电极上的峰电流密度比在Pd/XC催化剂上的大30%左右. 计时电流曲线测量表明, 在6000 s时, 在Pd/MC催化剂电极上的峰电流密度比在Pd/XC催化剂上的大38%左右, 这些结果说明Pd/MC催化剂对甲酸氧化的电催化活性和稳定性要好于Pd/XC催化剂. 由于Pd/MC和Pd/XC催化剂的Pd粒子平均粒径和相对结晶度相似, 因此, Pd/MC催化剂电催化性能好的原因只能归结于MC大的孔径和高的石墨化程度引起的高电导率.
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| 关 键 词： | 甲酸氧化 大孔炭 炭载Pd催化剂 电催化性能 直接甲酸燃料电池 |
| 收稿时间： | 2010-08-16 |
| 修稿时间： | 2011-01-18 |
Electrocatalytic Performance of Pd Catalyst Supported on Macropore Carbon for Oxidation of Formic Acid |
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| LIU Chun-Yan,XU Bin,TANG Ya-Wen,CAO Gao-Ping,YANG Yu-Sheng,LU Tian-Hong.Electrocatalytic Performance of Pd Catalyst Supported on Macropore Carbon for Oxidation of Formic Acid[J].Acta Physico-Chimica Sinica,2011,27(3):604-608. |
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| Authors: | LIU Chun-Yan XU Bin TANG Ya-Wen CAO Gao-Ping YANG Yu-Sheng LU Tian-Hong |
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| Institution: | 1. School of Chemistry and Environmental Science, Nanjing Normal University, Nanjing 210097, P. R. China;
2. Research Institute of Chemical Defense, Beijing 100191, P. R. China;
3. Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China |
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| Abstract: | The electrocatalytic performances of a Vulcan XC-72 carbon black supported Pd (Pd/XC) catalyst and a macroporous carbon supported Pd (Pd/MC) catalyst for formic acid oxidation in a direct formic acid fuel cell were investigated and compared.This was carried out using X-ray energy dispersive spectroscopy (EDS),X-ray diffraction (XRD) spectroscopy,Raman spectroscopy,and electrochemical techniques.The cyclic voltammograms indicate that the main peak potentials for the oxidation of formic acid at the Pd/XC and ... |
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| Keywords: | Formic acid oxidation Macropore carbon Carbon supported Pd catalyst Electrocatalytic performance Direct formic acid fuel cell |
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