| MoqRuyXz(X=S，Se，Te)纳米簇电催化还原氧的性能对比研究 |
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| 引用本文： | 刘世斌,刘洁,孙彦平,李一兵,段东红,张忠林.MoqRuyXz(X=S，Se，Te)纳米簇电催化还原氧的性能对比研究[J].无机化学学报,2006,22(6):1127-1132. |
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| 作者姓名： | 刘世斌 刘洁 孙彦平 李一兵 段东红 张忠林 |
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| 作者单位： | 太原理工大学洁净化工研究所,太原,030024 |
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| 基金项目： | 国家高技术研究发展计划(863计划);山西省自然科学基金 |
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| 摘 要： | 直接甲醇燃料电池存有两个较为突出的技术问题,即:阳极催化剂活性低和甲醇渗透1～4]。针对“甲醇渗透”(cross-over)问题有两种解决途径:一、使用低甲醇渗透率电解质膜(阻醇膜),二、使用抗甲醇氧还原电催化剂4]。目前,多数改性或新型膜材料的阻醇率有一定提高,然而膜的电导率等指标不够理想5～7]。抗甲醇氧还原催化材料的开发研究正逐渐受到重视4]。因过渡金属纳米簇硫族化合物电催化剂的活性、抗甲醇性、稳定性高、成本低逐渐得到青睐,是有竞争力的Pt替代催化材料7～15]。过渡金属纳米簇硫族化合物MqM′yXz的金属核M′多为Ru,掺杂…
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| 关 键 词： | 氧电还原 过渡金属簇硫族化合物 电催化剂 性能 |
| 文章编号： | 1001-4861(2006)06-1127-06 |
| 收稿时间： | 2006-01-09 |
| 修稿时间： | 2006-03-31 |
Electrocatalytic O2 Reduction Performance on MoqRuyXz(X=S, Se, Te) Nano-cluster in Methanol-containing Electrolyte |
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| LIU Shi-Bin,LIU Jie,SUN Yan-Ping,LI Yi-Bing,DUAN Dong-Hong and ZHANG Zhong-Lin.Electrocatalytic O2 Reduction Performance on MoqRuyXz(X=S, Se, Te) Nano-cluster in Methanol-containing Electrolyte[J].Chinese Journal of Inorganic Chemistry,2006,22(6):1127-1132. |
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| Authors: | LIU Shi-Bin LIU Jie SUN Yan-Ping LI Yi-Bing DUAN Dong-Hong and ZHANG Zhong-Lin |
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| Institution: | Institute of Clean Technique for Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024,Institute of Clean Technique for Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024,Institute of Clean Technique for Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024,Institute of Clean Technique for Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024,Institute of Clean Technique for Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024 and Institute of Clean Technique for Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024 |
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| Abstract: | The performance of electrocatalytic oxygen reduction on Mo-Ru-X (X=S, Se, Te) was investigated. The catalysts were synthesized by the carbonyl complexes decomposition method. The activities of the catalysts were measured by potentiodynamic and AC impedance. The micro-structures and compositions were characterized by XRD, TEM and EDS. Transmission electron microscopy (TEM) measurements reveal that the catalyst material is of amorphous Ru cluster chalcogenides in the nanoscale range. The electrochemical experiments show that the activity of Mo-Ru-Se is the highest, and peak current density is 3.32 mA·cm-2. However, Mo-Ru-Se is sensitive to methanol in methanol-containing electrolyte, and the activity decreased with the increasing of methanol concentration. The activity of Mo-Ru-S is poorer than Mo-Ru-Se, the peak current density is 2.80 mA·cm-2, the behavior of methanol effect on the activity is similar to Mo-Ru-Se. The tolerant-methanol performance of Mo-Ru-Te is the best in the three, but activity is not high, peak current density is 2.69 mA·cm-2 only. |
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| Keywords: | oxygen electro-reduction transition metal cluster chalcogenides electro-catalyst property |
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