Pt-ZrO_2/C电催化剂在碱性介质中对乙醇的电氧化  

Electro-oxidation of Ethanol on Pt-ZrO_2/C Electrocatalyst in Alkaline Media

作　　者：吴建军[1] 邱新平[1] 白玉霞[1] 席靖宇[1] 王建设[1] 朱文涛[1] 

机构地区：[1]清华大学化学系

出　　处：《河北师范大学学报（自然科学版）》2007年第1期68-72,共5页Journal of Hebei Normal University：Natural Science

基　　金：国家自然科学基金(90410002)

摘　　要：制备了Pt ZrO2/C催化剂,采用TEM,XRD等技术对其进行表征.利用循环伏安和电化学阻抗谱等方法研究Pt ZrO2/C催化剂在碱性溶液中对乙醇氧化的电化学活性,并与Pt/C催化剂(20%Pt,E TEK)进行对比.研究结果表明,Pt ZrO2/C催化剂具有较高的乙醇电氧化催化活性.电流密度最高的是n(Pt)∶n(ZrO2)为1∶1的样品,该比值为1∶4时显示出最低乙醇氧化峰电势.Pt- ZrO2/C catalyst was prepared and characterized by TEM and XRD. The electrochemical activity of Pt- ZrO2/C catalyst for ethanol oxidation was investigated by using cyclic voltammetry and electrochemical impedance spectroscopy in alkaline solutions and compared with Pt/C （20 % Pt, E-TEK）. The results showed that Pt- ZrO2/C gave higher catalytic activity for ethanol electro-oxidation. The highest current density was obtained at Pt/ZrO2 molar ratio with 1 ： 1 and the lower peak potential appeared when the Pt/ZrO2 molar ratio was 1：4.

关 键 词：乙醇电氧化 电催化剂 Pt-ZrO2/C 直接乙醇燃料电池 

分 类 号：O646[理学—物理化学]