【摘要】 以多壁碳纳米管（MWCNTs）为载体、H₂Pt Cl₆·6H₂O为铂源、Ni（NO₃）₂·6H₂O为镍源、硼氢化钠和乙二醇为还原剂，采用一锅法制备了一种PtNi/CNTs合金电催化剂。采用XRD、SEM、TEM、HRTEM、XPS、ICP-OES和Raman对催化剂结构进行了表征。采用循环伏安法（CV）、计时安培法（i-t）和CO溶出曲线法评价了催化剂的电化学活性与稳定性。结果表明，PtNi/CNTs对甲醇电催化氧化反应（MOR）具有优异的电催化性能，其峰值电流密度和稳态电流密度分别是商业Pt/C的5.89倍和38.97倍，PtNi/CNTs还表现出良好的稳定性，主要归因于碳纳米管独特的结构与双金属合金的协同效应。更多还原

【Abstract】 A PtNi/CNTs alloy electrocatalyst was prepared from one-pot reaction of multi-walled carbon nanotubes （MWCNTs） as carrier,H₂Pt Cl₆·6H₂O as platinum source,and Ni（NO₃）₂·6H₂O as nickel source,with sodium borohydride and ethylene glycol as reducing agents.The catalyst obtained was then characterized by XRD,SEM,TEM,HRTEM,XPS,ICP-OES and Raman,and evaluated by cyclic voltammetry （CV）,time-amperometric method （i-t） and CO-stripping method for analyses on the electrochemical activity and stability.The results showed that PtNi/CNTs exhibited excellent electrocatalytic performance for methanol oxidation reaction （MOR）,with peak current density and steady-state current density 5.89 times and 38.97 times that of commercial Pt/C,respectively.PtNi/CNTs also showed good stability,which was mainly attributed to the unique structure of carbon nanotubes and the synergistic effect of bimetallic alloys.更多还原