通过 NaH2 PO2自分解方法制备了高分散性的Pt-P/C催化剂,并且使用 X射线衍射(XRD)、透射电子显微镜(TEM)等表征手段对催化剂进行了表征,NaH2 PO2的加入可有效降低催化剂的粒径,约为2.3 nm。此外,亦用多种电化学测试手段测试了 P 的掺杂对甲醇的电催化氧化性能的影响,测试结果表明Pt-P/C催化剂不但能够增强催化剂对甲醇催化氧化的活性,而且还能够提高催化剂的稳定性。该测试结果表明Pt-P/C催化剂是一类具有潜在应用前景的直接甲醇燃料电池阳极催化剂。
Highly dispersed Pt-P/C catalyst was prepared by the self decomposition of NaH2 PO2 ,and it was characterized by characterized by transmission electron microscopy (TEM),X-ray diffraction (XRD).The addition of could reduce the platinum particle size effectively,and the mean size of the Pt-P particles was about 2.3nm.Furthermore,the effect of P doping towards the oxidation of methanol were also demonstrated by several electrochemical measures.The results showed that carbon-supported Pt-P catalyst exhibits higher activity and stability for the oxidation of methanol.Therefore,the Pt-P/C nanoparticles was a promising anode catalyst in DMFC.
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