一种高性能氧还原催化剂的制备方法

• Format: Patent
• Language: Chinese
• Published: 12.04.2022
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

本发明公开了一种高性能氧还原催化剂的制备方法，通过对前驱体中客体钯负载量及煅烧温度的调控，实现了对活性位点中心结构的优化，得到了有序化的钯锌合金纳米颗粒；与此同时，通过改变前驱体中主体金属中心，实现了钴纳米粒子的形成，促进了活性位点中心的多元化，而衍生出的碳纳米管也达到了促进活性位点间电子传递的效果。本发明基于主客体共调控方法将有序PdZn合金和Co纳米粒子共同组装到碳纳米管桥联的氮掺杂碳纳米材料载体上，该催化剂具有高的比表面积和丰富的大介孔结构、反应活性位点分散并具有高效氧还原性能。 The invention discloses a preparation method of a high-performance oxygen reduction catalyst and realizes optimization of a central structure of an active site by regulating and controlling the loading amount of object palladium in a precursor and the calcination temperature so as to obtain ordered palladium-zinc alloy nanoparticles, moreover, by changing the center of the main metal in the precursor, the formation of the cobalt nanoparticles is realized, diversification of the centers of the active sites is promoted, and the derived carbon nanotubes further achieve the effect of promoting electron transfer between the active sites. On the basis of a subject-object co-regulation method, ordered PdZn alloy and Co nanoparticles are jointly assembled on a carbon nanotube