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Pt-ZrO_2/C催化剂对CO电氧化机理探讨 被引量：1

Discuss on mechanism of CO electro-oxidation with Pt-ZrO_2/C catalyst
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摘要 采用传统的浸渍还原法制备了Pt-ZrO2/C[20% Pt-ZrO2(质量分数)]催化剂并研究了其对CO电氧化的催化活性。CO溶出实验结果表明:ZrO2的加入使吸附在催化剂表面的CO氧化电位向低电位方向移动,有利于提高催化剂的抗CO中毒能力。利用平均场模型和RO-PG模型对吸附在Pt-ZrO2/C电极表面的CO氧化机理进行了模拟,结果表明在Pt-ZrO2/C电极表面吸附的CO氧化遵从平均场模型。 Pt-ZrO2/C catalyst was prepared and compared with Pt/vulcan XC-72 （20% Pt E-TEK） in terms of the electrochemical activity for CO oxidation by electrochemical techniques. The CO-stripping experiment results show that the addition of ZrO2 into Pt results in the negative shift of CO-stripping peak and improvement of the CO-tolerance ability of Pt/C catalyst. The mean field and RO-PG models were used to fit the chronoamperometry results of the CO oxidation with respect to Pt-ZrO2/C electrode.
作者 李金峰 邱新平
机构地区 清华大学化学系有机光电子与分子工程教育部重点实验室
出处 《电源技术》 CAS CSCD 北大核心 2007年第3期209-211,共3页 Chinese Journal of Power Sources
关键词 CO 催化剂 Pt—ZrO2/C 直接甲醇燃料电池 CO, catalyst Pt-ZrO2/C direct methanol fuel cell
分类号 TM911.4 [电气工程—电力电子与电力传动]
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参考文献16

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电源技术
2007年 第3期

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