应用化学 ›› 2009, Vol. 26 ›› Issue (07): 831-834.

• 研究论文 • 上一篇    下一篇

Pd/TiC-C催化剂对甲酸氧化的电催化性能

陆天虹 ,,,,   

  1. 中科院长春应用化学研究所
  • 收稿日期:2008-06-24 修回日期:2008-08-22 出版日期:2009-07-10 发布日期:2009-07-10
  • 通讯作者: 陆天虹

Electrocatalytic Performance of Pd Catalyst Supported on Composite Supporter of TiC and Carbon for Oxidation of Formic Acid

  • Received:2008-06-24 Revised:2008-08-22 Published:2009-07-10 Online:2009-07-10

摘要: 研究了TiC和C作混合载体的Pd(Pd/TiC-C)催化剂对甲酸氧化的电催化性能。发现Pd/TiC-C催化剂对直接甲酸燃料电池(DFAFC)中甲酸氧化的电催化性能要优于Pd/C催化剂。而且,Pd/TiC-C催化剂的电催化性能与C和TiC的质量比有关,当质量比为2时,Pd/TiC-C催化剂对甲酸氧化的电催化活性和稳定性最好,甲酸在C和TiC的质量比为2的Pd/TiC-C催化剂电极上的氧化峰峰电位为0.164 V,比在Pd/C催化剂电极上负移12 mV,峰电流密度为23.08 mA/cm2,比在Pd/C催化剂电极上高约42%。

关键词: 碳化钛, 钯, 活性炭, 直接甲酸燃料电池

Abstract: The electrocatalytic performance of the Pd/TiC-C catalysts for the oxidation of formic acid was investigated. It was found that the electrocatalytic performance of the Pd/TiC-C catalysts for the oxidation of formic acid in the direct formic acid fuel cell is better than that of Pd/C catalyst. Furthermore, the electrocatalytic performance of the Pd/TiC-C catalysts is related to the weight ratio of C and TiC. When the weight ratio is 2 the electrocatalytic activity and stability of Pd/TiC-C catalyst is best. The peak potential of the oxidation of formic acid at the Pd/TiC-C catalyst with weight ratio of 2 is located at 0.164 V. which is 12 mV more negative than that at the Pd/C catalyst electrode. The peak current density is 23.08 mA/cm2, which is 42% larger than that at the Pd/C catalyst electrode.

Key words: Titanium carbide, Palladium, Active carbon, Direct formic acid fuel cell

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