Pt/C电极表面活化处理对乙醇电催化氧化的影响  

The Effect of Activation Treatment on Electro-catalytic Activity of Pt/CElectrode for Ethanol Oxidation

作　　者：孙芳[1] 邬冰[1] 曲微丽[1] 高颖[1] 陆天虹[2] 刘长鹏[2] 邢巍[2] 

机构地区：[1]哈尔滨师范大学理化学院化学系,哈尔滨150080 [2]中国科学院长春应用化学研究所

出　　处：《无机化学学报》2005年第10期1546-1550,共5页Chinese Journal of Inorganic Chemistry

基　　金：国家科技部"973"基金(No.G2000026408);"863"(No.2003AA517062);国家自然科学基金(No.20373068;20433066);黑龙江省教育厅基金(No.1531082);江苏省科技厅高新技术基金(No.BG200302);江苏省教育厅高新技术产业化基金(No.JH02-080);国家"221"工程重点学

摘　　要：The electrocatalytic activity of the Pt/C electrode for the ethanol oxidation was significantly increased after the electrode being treated with mixed solvent of tetrahydrofuran and acetone. The onset potential of the ethanol oxidation shifted more negative than that at the untreated Pt/C electrode. The peak current of the ethanol oxidation at the treated Pt/C electrode was 2.3 and 3.1 times compared with that at the untreated Pt/C electrode in acidic and neutral solution, respectively. In addition, the treatment of the Pt/C electrode could decrease the adsorption strength of COad, the intermediate of the ethanol oxidation and thus, decrease the poison effect of the COad to the Pt/C electrode.The electrocatalytic activity of the Pt/C electrode for the ethanol oxidation was significantly increased after the electrode being treated with mixed solvent of tetrahydrofuran and acetone. The onset potential of the ethanol oxidation shifted more negative than that at the untreated Pt/C electrode. The peak current of the ethanol oxidation at the treated Pt/C electrode was 2.3 and 3.1 times compared with that at the untreated Pt/C electrode in acidic and neutral solution, respectively. In addition, the treatment of the Pt/C electrode could decrease the adsorption strength of COad, the intermediate of the ethanol oxidation and thus, decrease the poison effect of the COad to the Pt/C electrode.

关 键 词：燃料电池 PT 乙醇 CO 

分 类 号：O646[理学—物理化学]