炭载Pt-P催化剂对甲醇氧化的电催化性能研究  

The investigation of carbon supported Pt-P/C catalyst for the oxidation of methanol

作　　者：杨改秀[1,2] 孔晓英[1] 袁振宏[1] 陈冠益[2] 陆天虹[3] 孙永明[1] 

机构地区：[1]中国科学院广州能源研究所,中国科学院可再生能源与天然气水合物重点实验室,广东广州510640 [2]天津大学环境科学与工程学院内燃机燃烧学国家重点实验室,天津300072 [3]南京师范大学化学与环境科学学院,江苏省生物功能材料重点实验室,江苏南京210097

出　　处：《功能材料》2013年第20期2967-2970,2975,共5页Journal of Functional Materials

基　　金：国家自然科学基金主任基金资助项目(21143005)

摘　　要：通过NaH2PO2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,NaH2PO2的加入可有效降低催化剂的粒径,约为2.3nm。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PtP/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 NaH2PO2, and it was characterized by characterized by transmission electron microscopy （TEM）, X-ray diffraction （XRD）. The ad- dition 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 sev- eral 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.

关 键 词：甲醇 Pt—P C催化剂 电催化氧化 直接甲醇燃料电池 

分 类 号：O64[理学—物理化学]