催化学报

催化学报 ›› 2009, Vol. 30 ›› Issue (10): 1012-1016.

• 研究论文 • 上一篇    下一篇

直接甲醇燃料电池阴极耐甲醇Pd-Co/C电催化剂的制备与表征

刘影 1, 2, 赵红 1, 闫世友 2, 齐静 2, 孙公权 2   

  1. 1 大连交通大学环境与化学工程学院, 辽宁大连 116028 2 中国科学院大连化学物理研究所, 辽宁大连 116023
  • 收稿日期:2009-10-25 出版日期:2009-10-25 发布日期:2013-06-06

Preparation and Characterization of Methanol Tolerant Pd-Co/C Electrocata-lysts for Direct Methanol Fuel Cells

LIU Ying1, 2, ZHAO Hong1,*, YAN Shiyou2, QI Jing2, SUN Gongquan2,*   

  1. 1Department of Environmental and Chemical Engineering, Dalian Jiaotong University, Dalian 116028, Liaoning, China 2Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China
  • Received:2009-10-25 Online:2009-10-25 Published:2013-06-06

PDF

1366

被引次数

16

摘要： 以 NaBH4 为还原剂, 采用共还原法和分步还原法制备了粒径分布均匀的 Pd/C 和 Pd-Co/C 电催化剂. X 射线衍射、透射电镜、电化学循环伏安和旋转圆盘电极等表征结果表明, 与 Pd/C 电催化剂相比, 两种方法制备的 Pd-Co/C 电催化剂的晶格常数明显缩小, 其中分步还原法制备的电催化剂不仅具有良好的氧还原活性, 而且表现了良好的耐甲醇性能.

关键词: 钯, 钴, 碳载催化剂, 电催化剂, 氧还原反应, 直接甲醇燃料电池

Abstract: Pd/C and Pd-Co/C electrocatalysts were prepared by sodium borohydride co-reduction and successive reduction. X-ray diffraction,?transmission electron microscopy, cyclic voltammetry, and rotating disk electrode were carried out to characterize these electrocatalysts. The results showed that the Pd-Co/C electrocatalysts have a single-phase face-centered-cubic disordered structure and the lattice constant is obviously smaller than that of Pd/C electrocatalyst. The Pd-Co/C electrocatalyst prepared by the successive reduction method not only has the highest oxygen reduction reaction activity but also shows good methanol tolerant capability.

Key words: palladium, cobalt, carbon-supported catalyst, electrocatalyst, oxygen reduction reaction, direct methanol fuel cell