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发明公开
CN106334553A 一种燃料电池催化剂用掺杂的NbOx铂基催化剂的高效掺杂方法 有权

一种燃料电池催化剂用掺杂的NbOx铂基催化剂的高效掺杂方法
摘要：
一种燃料电池催化剂用掺杂的NbOx铂基催化剂的高效掺杂方法，它涉及一种掺杂NbOx粉体的制备方法。本发明的目的是要解决现有NbOx氧化物的导电率低和催化活性差的问题。发明内容：一、制备前驱体；二、焙烧；三、掺杂；四、调节反应液Ⅲ的pH值，再进行抽滤，清洗，干燥，得到燃料电池催化剂用掺杂的NbOx铂基催化剂。本发明制备的燃料电池催化剂用掺杂的NbOx铂基催化剂的半波电位为0.79V～0.86V，与碳载铂催化剂相比更正，并且质量活性较高，可达173.44mAmgPt-1，比碳载铂催化剂提高了2.96倍～5.3倍。本发明可获得一种燃料电池催化剂用掺杂的NbOx铂基催化剂的高效掺杂方法。
摘要（英）：

The invention discloses a high-efficiency doping method of a doped NbOx platinum-based catalyst used for fuel cell catalysts, and relates to a preparation method of doped NbOx powder. The purpose of the invention is to solve the problems of low conductivity and poor catalysis activity of present NbOx oxides. The method comprises the following steps: 1, preparing a precursor; 2, roasting; 3, doping; and 4, adjusting the pH value of a reaction solution III, carrying out suction filtration, cleaning, and drying to obtain the doped NbOx platinum-based catalyst used for fuel cell catalysts. The half-wave potential of the doped NbOx platinum-based catalyst used for fuel cell catalysts, prepared in the invention, is 0.79-0.86 V, and is more positive than that of a carbon supported platinum catalyst, and the mass activity of the doped NbOx platinum-based catalyst is high, can reach 173.44 mAmgPt<-1> and is 2.96-5.3 times higher than that of the carbon supported platinum catalyst. The doped NbOx platinum-based catalyst used for fuel cell catalysts can be obtained through the high-efficiency doping method.

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