| 二甲醚电氧化及其阳极催化剂研究 |
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| 引用本文： | 邵玉艳,尹鸽平,高云智,赵 静.二甲醚电氧化及其阳极催化剂研究[J].无机化学学报,2004,20(12):1453-1458. |
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| 作者姓名： | 邵玉艳 尹鸽平 高云智 赵 静 |
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| 作者单位： | 哈尔滨工业大学应用化学系,哈尔滨,150001 |
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| 基金项目： | 黑龙江省自然科学基金资助项目(No.B0201)，哈尔滨工业大学科学基金资助项目(No.HIT200139) |
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| 摘 要： | Anode electro-catalysts for direct dimethyl-ether fuel cell (DDFC), Pt/C, PtRu/C (1∶1) and PtSn/C (3∶2), were prepared by chemical impregnation-reduction method with formaldehyde as the reductant. DME electro-oxidation and adsorption at Pt electrode and Pt electro-catalysts were investigated by Cyclic Voltammetry(CV), Quasi-steady state polarization and Gas Chromatography(GC). CV showed that there were two current peaks of DME electro-oxidation at Pt electrode around 0.8V (vs RHE); DME was adsorbed at Pt electrode more weakly and slowly than oxygen, methanol, even hydrogen; the onset potential of DME oxidation was 50mV less than that of methanol, and DME peak potential 110 mV lower, thus more advantageous for using in fuel cells than methanol. GC showed that small amount of HCHO was generated during DME electro-oxidation. The mechanism of DME electro-oxidation was proposed. Among the three electro-catalysts (Pt/C, PtRu/C and PtSn/C), Pt alloy catalysts, especially PtRu/C, showed a higher performance toward DME electro-oxidation, as in the case of methanol. Temperature experiments showed that both DME electro-oxidation and adsorption on Pt and Pt alloy catalysts were favored with increased temperature.
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| 关 键 词： | 直接二甲醚燃料电池 铂电极 电氧化 阳极催化剂 |
| 修稿时间： | 2004年5月10日 |
Electro-oxidation of Dimethyl-ether and Anode Electro-catalysts |
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| SHAO Yu-Yan,YIN Ge-Ping,GAO Yun-Zhi and ZHAO Jing.Electro-oxidation of Dimethyl-ether and Anode Electro-catalysts[J].Chinese Journal of Inorganic Chemistry,2004,20(12):1453-1458. |
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| Authors: | SHAO Yu-Yan YIN Ge-Ping GAO Yun-Zhi and ZHAO Jing |
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| Institution: | Department of Applied Chemistry, Harbin Institute of Technology, Harbin 150001,Department of Applied Chemistry, Harbin Institute of Technology, Harbin 150001,Department of Applied Chemistry, Harbin Institute of Technology, Harbin 150001 and Department of Applied Chemistry, Harbin Institute of Technology, Harbin 150001 |
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| Abstract: | |
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| Keywords: | direct dimethyl-ether fuel cell Pt electrode electro-oxidation anode electro-catalysts |
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