| 直接甲醇燃料电池的Ir-Fe/C 阴极催化剂性能 |
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| 引用本文： | 郭琦,李林儒,陆亮,季云,陆天虹.直接甲醇燃料电池的Ir-Fe/C 阴极催化剂性能[J].高等学校化学学报,2012,33(5):1007-1010. |
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| 作者姓名： | 郭琦 李林儒 陆亮 季云 陆天虹 |
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| 作者单位： | 1. 江苏教育学院生命科学与化学学院, 南京 210013;
2. 江苏省新型动力电池重点实验室, 南京师范大学化学与材料科学学院, 南京 210097 |
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| 基金项目： | 国家自然科学基金，江苏高校优势学科建设工程资助项目资助 |
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| 摘 要： | 合成了直接甲醇燃料电池的Ir-Fe/C阴极催化剂, 用X射线衍射(XRD)谱和X射线能量色散谱(EDS)等方法对该催化剂进行表征, 研究了碳载Ir-Fe(Ir-Fe/C)催化剂对氧还原的电催化活性和抗甲醇能力. 研究发现, 氧在碳载Ir(Ir/C)和Ir-Fe/C催化剂电极上还原的起始氧还原电位分别为0.57和0.65 V. 在0.2 V下的电流密度分别为4.6和5.8 mA/cm2, 表明Ir-Fe/C催化剂对氧还原的电催化性能要优于Ir/C催化剂, 而且Ir-Fe/C催化剂也有很好的抗甲醇能力.
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| 关 键 词： | 碳载Ir-Fe催化剂 甲醇氧化 抗甲醇能力 直接甲醇燃料电池 |
| 收稿时间： | 2011-11-07 |
Electrocatalytic Performance of Cathodic Ir-Fe/C Catalyst in Direct Methanol Fuel Cell |
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| GUO Qi
,
LI Lin-Ru
,
LU Liang
,
JI Yun
,
LU Tian-Hong.Electrocatalytic Performance of Cathodic Ir-Fe/C Catalyst in Direct Methanol Fuel Cell[J].Chemical Research In Chinese Universities,2012,33(5):1007-1010. |
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| Authors: | GUO Qi LI Lin-Ru LU Liang JI Yun LU Tian-Hong |
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| Institution: | 1. School of Life Science and Chemistry, Jiangsu Institute of Education, Nanjing 210013, China;
2. Jiangsu Key Laboratory of New Power Batteries, School of Chemistry and Material Science, Nanjing Normal University, Nanjing 210097, China |
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| Abstract: | Ir-Fe/C catalyst was prepared. The electrocatalytic activity of the Ir-Fe/C catalyst for the oxygen reduction and its methanol tolerance ability were investigated,based on the characterization with X-ray diffractometer(XRD) and energy dispersive spectrometer(EDS). The results show that the onset potentials of the oxygen reduction at the Ir/C and Ir-Fe/C catalyst electrodes are 0.57 and 0.65 V,respectively,and the current densities at 0.2 V are 4.6 and 5.8 mA/cm2,respectively.It indicates that the electrocatalytic activity of the Ir-Fe/C catalyst for the oxygen reduction is better than that of the Ir/C catalyst.In addition,the Ir-Fe/C catalyst possesses the high methanol tolerance ability.These results lay a strong basis for the use of the Ir-Fe/C cathodic catalyst in direct methanol fuel cell(DMFC). |
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| Keywords: | Carbon supported Ir-Fe catalyst Methanol oxidation Methanol tolerance ability Direct methanol fuel cell(DMFC) |
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