铂铅氧化物复合材料的制备及电催化性能研究

Preparation and electrocatalytic performance of Pt-PbO2 compounds

氧气还原(Oxygen Reduction Reaction,ORR)催化剂是燃料电池的一个重要组成部分,铂基催化剂是目前最高效的ORR催化剂。利用旋转固载法合成了Pt-PbO2纳米复合材料,通过电化学性能测试发现:将合成的Pt-PbO2纳米复合材料作为催化活性位点时,相比于商业Pt/C催化剂,其半坡电位提高了0.04V vs.RHE。Pt-PbO2纳米复合材料对催化ORR反应具有良好的催化活性和稳定性。

Oxygen reduction reaction(ORR)is an important cathodic reaction of fuel cells.So far,the platinum-based catalysts are the most effective ORR catalysts.Nanocomposite of lead dioxide nanoparticles and platinum nanoparticles were prepared by mixing and stirring.The electrochemical performance test showed that the half-wave potential of the Pt-PbO 2 nanocomposite increased by 0.04V vs.RHE compared with commercial Pt/C catalyst when it was used as the catalytic active site.