物理化学学报 >> 2010, Vol. 26 >> Issue (08): 2135-2138.doi: 10.3866/PKU.WHXB20100802

电化学 上一篇    下一篇

直接甲醇燃料电池三元催化剂PtRuCo/C的制备及其电化学性质

徐群杰, 周小金, 李巧霞, 李金光   

  1. 上海电力学院, 上海高校电力腐蚀控制与应用电化学重点实验室, 上海 200090
  • 收稿日期:2010-01-12 修回日期:2010-03-18 发布日期:2010-07-23
  • 通讯作者: 徐群杰 E-mail:xuqunjie@shiep.edu.cn
  • 基金资助:

     国家自然科学基金(20873031)、上海市教委科技创新重点项目(10ZZ116)和上海市科委能力建设项目(09230501400)资助

Preparation and Electrochemical Properties of Ternary Catalyst PtRuCo/C for Direct Methanol Fuel Cell

XU Qun-Jie, ZHOU Xiao-Jin, LI Qiao-Xia, LI Jin-Guang   

  1. Department of Thermal Power & Environmental Engineering, Shanghai University of Electric Power, Shanghai 200090, P. R. China
  • Received:2010-01-12 Revised:2010-03-18 Published:2010-07-23
  • Contact: XU Qun-Jie E-mail:xuqunjie@shiep.edu.cn
  • Supported by:

    The project was supported by the National Natural Science Foundation of China (20873031), Innovation Program of Shanghai Municipal Education Commission, China (10ZZ116) and Key Project of Shanghai Committee of Science and Technology, China (09230501400).

摘要:

使用柠檬酸三钠作为稳定剂, 硼氢化钠作为还原剂, 用浸渍还原法制备了20%(w)Pt60Ru30Co10/C催化剂. 利用透射电子显微镜(TEM)和X射线衍射(XRD)对催化剂进行了表征. 考察了不同pH值对制备催化剂的催化甲醇氧化能力及稳定性的影响, 并使用预吸附单层CO溶出方法研究了其抗中毒能力. 结果表明, 当pH=8时, 制备的PtRuCo/C对甲醇氧化具有最高的催化活性, 其催化活性远高于商业化的Pt50Ru50/C, 同时催化剂的稳定性最好, 高于商业化的Pt50Ru50/C的稳定性, 而且预吸附单层CO的起始氧化电位比Pt50Ru50/C的明显负移.

关键词: 浸渍还原法, PtRuCo/C, 甲醇氧化, 稳定性

Abstract:

Using sodium citrate as a stabilizer, sodium borohydride as a reductant, 20%(w) Pt60Ru30Co10/C catalyst was prepared by impregnating reduction. Transmission electron microscopy (TEM) and X-ray diffraction (XRD) were used to characterize the catalysts. We studied the catalytic activity and stability in a methanol solution at different pH values and pre-adsorbed CO monolayer stripping was used to investigate its anti-poisoning ability. The results showed that PtRuCo/C had the highest catalytic activity toward methanol at pH 8, and its catalytic activity and stability were much higher than that of commercial Pt50Ru50/C. Compared with Pt50Ru50/C, the pre-adsorbed CO monolayer oxidation potential showed a significant negative shift.

Key words: Impregnating reduction method, PtRuCo/C, Methanol oxidation, Stability

MSC2000: 

  • O646