Structurally Ordered Pt3Cr as Oxygen Reduction Electrocatalyst: Ordering Control and Origin of Enhanced Stability
文献类型：期刊论文
| 作者 | Cui,Zhiming; Chen,Hao; Zhou,Weidong; Zhao,Mengtian; DiSalvo,Francis J. |
| 刊名 | chemistry of materials
 |
| 出版日期 | 2015 |
| 卷号 | 27期号:21页码:7538-7545 |
| 关键词 | DIRECT SYNTHESIS CALORIMETRY FUEL-CELL CATALYSTS INTERMETALLIC PHASES STANDARD ENTHALPIES NANOPARTICLES SURFACE CR ALLOYS PLATINUM ACID |
| 通讯作者 | disalvo,fj |
| 英文摘要 | ordered intermetallic phases provide predictable control over structure and electronic effects, not afforded by the widely studied alloys. however, because of the lack of a unifying principle or model for controlling the ordering and particle size, it is still a great challenge to synthesize the desired ordered phase (5 nm and smaller). here, we employ pt3cr as a typical ordered intermetallic phase to comprehensively study the factors that control both the ordering and particle size. ordered pt3cr intermetallic nanopartides (similar to 5 nm) are successfully synthesized using a kcl-matrix method in combination with adjusting annealing conditions. such structurally ordered pt3cr/c exhibits superior kinetics toward the oxygen reduction reaction (orr), relative to disordered ptcr alloy phases and commercial pt/c. more importantly, the ordered pt3cr intermetallic catalyst shows a minimal loss of activity after 5000 potential cycles (14.7%) and a minimal cr leaching loss after 4 weeks of testing (13.5%). the mechanism for the enhanced stability of ordered phases is discussed and elucidated. the high stability and activity of ordered pt3cr/c make it very promising for application as cathode catalysts for fuel cells. this work provides a guide to optimizing the synthesis of ordered intermetallic catalysts and improving their catalytic performance. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000364614600040 |
| 源URL | [http://ir.ciac.jl.cn/handle/322003/64603]  |
| 专题 | 长春应用化学研究所_长春应用化学研究所知识产出_期刊论文 |
| 推荐引用方式 GB/T 7714 | Cui,Zhiming,Chen,Hao,Zhou,Weidong,et al. Structurally Ordered Pt3Cr as Oxygen Reduction Electrocatalyst: Ordering Control and Origin of Enhanced Stability[J]. chemistry of materials,2015,27(21):7538-7545. |
| APA | Cui,Zhiming,Chen,Hao,Zhou,Weidong,Zhao,Mengtian,&DiSalvo,Francis J..(2015).Structurally Ordered Pt3Cr as Oxygen Reduction Electrocatalyst: Ordering Control and Origin of Enhanced Stability.chemistry of materials,27(21),7538-7545. |
| MLA | Cui,Zhiming,et al."Structurally Ordered Pt3Cr as Oxygen Reduction Electrocatalyst: Ordering Control and Origin of Enhanced Stability".chemistry of materials 27.21(2015):7538-7545. |
入库方式： OAI收割
来源：长春应用化学研究所
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