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| 一种新型直接甲醇燃料电池阳极添加剂的电化学研究 | |
| 引用本文： | 苏怡,刘长鹏,单义斌,韩飞,李长志,伍丽娥,邢巍,陆天虹. 一种新型直接甲醇燃料电池阳极添加剂的电化学研究[J]. 化学学报, 2004, 62(17): 1645-1648 |
| 作者姓名： | 苏怡 刘长鹏 单义斌 韩飞 李长志 伍丽娥 邢巍 陆天虹 |
| 作者单位： | 中国科学院长春应用化学研究所, 长春, 130022 |
| 基金项目： | 国家高技术发展规划 863项目 (No.2 0 0 1AA32 30 60 )，国家重大基础研究发展规划 973项目 (No .G2 0 0 0 0 2 640 8)，国家自然科学基金 (No.2 0 3730 68)资助项目 |
| 摘 要： | 将磷钼酸(H4PMo12O40·xH2O,PMo12)作为一种添加剂,制备了直接甲醇燃料电池阳极Pt-Ru/C-PMo12复合催化剂,并对甲醇在含有此复合催化剂的阳极上的氧化进行了电化学研究.测试表明该添加剂降低了甲醇及其电氧化中间产物转化的活化能,改善了电极内部的质子传输状况,对甲醇的电化学氧化过程具有明显的促进作用,该复合催化剂与常规的Pt-Ru/C催化剂相比,甲醇的阳极氧化电流提高了46%.添加剂的这一效应可能与磷钼酸的Keggin结构有关. |
| 关 键 词： | 磷钼酸 直接甲醇燃料电池 电催化剂 |
Electrochemical Study on a New Additive to the Anodic Electrode of Direct Methanol Fuel Cell |
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| SU Yi,LIU Chang-Peng,SHAN Yi-Bin,HAN Fei,LI Chang-Zhi,WU Li-E,XING Wei,LU Tian-Hong. Electrochemical Study on a New Additive to the Anodic Electrode of Direct Methanol Fuel Cell[J]. Acta Chimica Sinica, 2004, 62(17): 1645-1648 | |
| Authors: | SU Yi LIU Chang-Peng SHAN Yi-Bin HAN Fei LI Chang-Zhi WU Li-E XING Wei LU Tian-Hong |
| Affiliation: | Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022 |
| Abstract: | Molybdophosphoric acid was introduced into the electro-catalyst for the anode of direct methanol fuel cell (DMFC) as an additive. The electrochemical result shows that the additive has obvious promotion effect on the methanol anodic electro-oxidation reaction. Compared with the conventional catalyst, the complex catalyst improved methanol anodic oxidation activity by 46 percent. The reason that it deceases the activation energy for the methanol and its ramification electro-oxidation reaction was estimated to be its special complex Keggin structure. This resulted in changing of the distribution of the states of electrode chemicals, proton micro-channels, charge distribution, and reaction field. |
| Keywords: | molybdophosphoric acid direct methanol fuel cell (DMFC) electro-catalyst |
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