PtTe/C催化剂的制备及其对乙醇的电催化氧化性能

Preparation of PtTe/C Catalyst and Its Electro-Catalytic Performance for Oxidation of Ethanol

采用无机溶胶法制备了用于乙醇燃料电池的PtTe/C催化剂;利用X射线衍射仪分析了催化剂的结构,采用循环伏安法和电化学阻抗法测试了PtTe/C催化剂对乙醇的电催化氧化性能.结果表明,与商业Pt/C催化剂相比,PtTe/C催化剂对乙醇的催化氧化效率明显较高,可使乙醇氧化峰电流密度提高27%,且具有更高的抗CO中毒能力.

PtTe/C catalyst used for direct ethanol fuel cell was prepared by using inorganic colloid method. The structure of the catalyst was characterized by means of X-ray diffraction, and its catalytic activity for electro-oxidation of ethanol was evaluated by using voltammetry and electrochemical impedance spectroscopy. Results indicate that PtTe/C catalyst has a higher catalytic activity for electro-oxidation of ethanol and better tolerance to CO poisoning than commercial catalyst Pt/C. Namely, it is capable of increasing the peak current for the oxidation of ethanol by 27%.