| High performance rare earth oxides LnOx(Ln = Sc, Y, La, Ce, Pr and Nd) modified Pt/C electrocatalysts for methanol electrooxidation | |
| Department | OSSO国家重点实验室 |
Tang ZC(唐志诚) ; Lv GX(吕功煊); Lv GX(吕功煊)
| |
| The second department | erc国家工程研究中心 |
| 2006 | |
| Source Publication | Journal of Power Sources
 |
| ISSN | 0378-7753 |
| Volume | 162Issue:2Pages:1067–1072 |
| Abstract | In this paper, the LnOx (Ln = Sc, Y, La, Ce, Pr and Nd) modified Pt/C catalysts were prepared by wet precipitation and reduction method. The catalysts were characterized by transmission electron microscopy (TEM), energy dispersive X-ray analysis (EDX) and X-ray diffraction (XRD). TEM showed that the Pt-PrOx nanoparticles were uniformly dispersed on carbon with an average particle size of 5.0 nm in the Pt3-(PrOx)1/C catalyst. EDX showed that Pt and Pr were successfully loaded on the carbon support without obvious loss. XRD showed that all the Pt/C and LnOx modified Pt/C electrocatalysts (except for the Pt3-(ScOx)1/C electrocatalyst) displayed the typical character of Pt face centered cubic (fcc) phase, whereas the Pt3-(ScOx)1/C electrocatalyst contained the diffraction pattern of Pt face centered cubic and Sc2O3 phase. LnOx modified Pt/C electrocatalysts were compared with Pt/C in terms of the electrochemical activity and stability for methanol electrooxidation using cyclic voltammetry (CV) and chronoamperometry (CA) in 0.5M H2SO4 + 0.5M CH3OH solutions. The results showed that all the LnOx (except for NdOx) modified the Pt/C electrocatalysts gave higher catalytic activity and stability than Pt/C. In particular, the Pt3-(PrOx)1/C eloctrocatalyst was found to be superior than others. Under this respect, several Pt-PrOx/C catalysts with different atomic ratio of Pt/Pr were also identically prepared and characterized. It was found by CV and CA that the Pt3-(PrOx)1/C and Pt1-(PrOx)1/C catalysts showed better catalytic activity and stability than the Pt5-(PrOx)1/C, Pt1-(PrOx)3/C and Pt/C catalysts. The Pt3-(PrOx)1/C and Pt1-(PrOx)1/C catalysts had high catalytic activity and good stability, which could be used as novel electrocatalysts for direct methanol fuel cell. |
| Keyword | Methanol Electrooxidation Direct Methanol Fuel Cell Rare Earth Oxides Electrochemical Properties Electrocatalytic Reaction Electrocatalyst |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 环境催化与氢能源研究组;环境催化与清洁能源研究组 |
| compositor | 第一作者单位 |
| Document Type | 期刊论文 |
| Identifier | http://ir.licp.cn/handle/362003/4246 |
| Collection | 精细石油化工中间体国家工程研究中心（ERC） 羰基合成与选择氧化国家重点实验室（OSSO） |
| Corresponding Author | Lv GX(吕功煊) |
| Recommended Citation GB/T 7714 | Tang ZC,Lv GX,Lv GX. High performance rare earth oxides LnOx(Ln = Sc, Y, La, Ce, Pr and Nd) modified Pt/C electrocatalysts for methanol electrooxidation[J]. Journal of Power Sources,2006,162(2):1067–1072. |
| APA | Tang ZC,Lv GX,&吕功煊.(2006).High performance rare earth oxides LnOx(Ln = Sc, Y, La, Ce, Pr and Nd) modified Pt/C electrocatalysts for methanol electrooxidation.Journal of Power Sources,162(2),1067–1072. |
| MLA | Tang ZC,et al."High performance rare earth oxides LnOx(Ln = Sc, Y, La, Ce, Pr and Nd) modified Pt/C electrocatalysts for methanol electrooxidation".Journal of Power Sources 162.2(2006):1067–1072. |
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