| 非晶态Pt-CoSn合金上的甲醇电催化氧化 |
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| 引用本文： | 张想泰,王辉,张哲,雷自强,王荣方.非晶态Pt-CoSn合金上的甲醇电催化氧化[J].电源技术,2012,36(4):507-510. |
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| 作者姓名： | 张想泰 王辉 张哲 雷自强 王荣方 |
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| 作者单位： | 西北师范大学化学化工学院,生态环境相关高分子材料教育部重点实验室,甘肃省高分子材料重点实验室,甘肃兰州730070 |
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| 基金项目： | 国家自然科学基金项目(21163018);甘肃省自然科学基金(1010RJZA024);西北师范大学科学和技术创新项目(NWNU-kjcxgc-03-63) |
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| 摘 要： | 为了研究Pt修饰非晶态催化剂对甲醇电催化氧化行为的影响,采用两步法合成了碳载Pt修饰非晶态CoSn合金催化剂。使用透射电镜和X射线衍射技术分析了CoSn/C前体和Pt-CoSn/C催化剂的形貌及晶体结构;利用循环伏安法和旋转圆盘电极技术测试电化学性能,比较了Pt/C、PtRu/C和Pt-CoSn/C催化剂对甲醇氧化的电催化活性和稳定性。结果表明,Pt修饰非晶态CoSn合金催化剂对甲醇氧化有较好的电催化性能,Pt用量显著降低。非晶态CoSn合金具有良好的质子和电子传导能力,提高了Pt对甲醇氧化的电催化活性;Pt-CoSn/C对甲醇电催化的质量活性和稳定性要优于PtRu/C催化剂。
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| 关 键 词： | 燃料电池 非晶态合金 甲醇氧化 修饰型催化剂 |
Amorphous CoSn alloy decorated by Pt for methanol oxidation |
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| ZHANG Xiang-tai
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WANG Hui
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ZHANG Zhe
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LEI Zi-qiang
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WANG Rong-fang.Amorphous CoSn alloy decorated by Pt for methanol oxidation[J].Chinese Journal of Power Sources,2012,36(4):507-510. |
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| Authors: | ZHANG Xiang-tai WANG Hui ZHANG Zhe LEI Zi-qiang WANG Rong-fang |
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| Affiliation: | (Key Laboratory of Gansu Polymer Materials,Key Laboratory of Eco-Environment-Related Polymer Materials of Ministry of Education of China,College of Chemistry and Chemical Engineering,Northwest Normal University,Lanzhou Gansu 730070,China) |
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| Abstract: | In order to study the electro-catalytic behaviour of methanol electro-oxidation reaction with Pt decorating amorphous CoSn alloys,Pt decorating amorphous CoSn alloys catalyst supported on carbon(denote as Pt-CoSn/C) was prepared by the two-stage chemical synthesis.The structure of Pt-CoSn/C catalyst was confirmed by the transmission electron microscopy(TEM) and X-ray diffraction(XRD).Under the same quality of noble metal,the Pt-CoSn/C catalyst had higher mass activity than Pt/C and PtRu/C catalysts in cyclic voltammetry for methanol oxidation.The structure of Pt decorating amorphous CoSn alloys could not only obviously decrease the usage of Pt but also enhance its catalytic activity. |
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| Keywords: | fuel cell amorphous alloy methanol oxidation decorating catalysts |
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