Three-Dimensional Assembly of PtNi Alloy Nanosticks with Enhanced Electrocatalytic Activity and Ultrahigh Stability for the Oxygen Reduction Reaction
文献类型：期刊论文
| 作者 | Yi, Baolian1; Jiang, Shangfeng1,2; Zeng, Yachao1,2; Zhang, Hongjie1,2; Shao, Zhigang1 |
| 刊名 | CHEMELECTROCHEM
 |
| 出版日期 | 2017-06-01 |
| 卷号 | 4期号:6页码:1436-1442 |
| 关键词 | oxygen reduction reaction PtNi alloy nanostick assembly enhanced activity ultrahigh stability |
| 英文摘要 | A three-dimensional (3D) assembly of PtNi alloy nanosticks (NSA) is synthesized through an effective organic solvothermal approach to enhance the specific activity and long-term durability for the oxygen reduction reaction (ORR). The 3D PtNi NSA is composed of interconnected nanosticks with an average diameter of approximately 5 nm, which are confirmed to be of high crystallinity with ordered atomic arrangement of ORR-favorable PtNi (111). After an electrochemical dealloying process, the surface of the nanosticks becomes rough with a large quantity of step-like nanostructures, which are verified to effectively improve the ORR activity. The electrochemical results of half-cell tests demonstrate that the 3D PtNi alloy NSA exhibits a 4.5 times higher mass activity than the Pt/C (20 wt%, JM) catalyst (0.58 A/mg) and a 5.1 times higher specific activity (742 mu A/cm(2)). Most importantly, after the accelerated deterioration test, the 3D PtNi alloy NSA catalyst shows almost no activity decrease, both in half- and single-cell tests. The 3D PtNi alloy NSA prepared here is indeed a promising electrocatalyst for practical electrocatalytic applications. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Electrochemistry |
| 研究领域[WOS] | Electrochemistry |
| 关键词[WOS] | FUEL-CELLS ; CORE-SHELL ; PARTICLE-SIZE ; CATALYSTS ; METAL ; NANOPARTICLES ; DURABILITY ; NANOWIRES ; SURFACES ; METHANOL |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000407694400024 |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/149832]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | 1.Chinese Acad Sci, Dalian Inst Chem Phys, Fuel Cell Syst & Engn Lab, 457 Zhongshan Rd, Dalian 116023, Peoples R China 2.Univ Chinese Acad Sci, Yuquan Rd, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yi, Baolian,Jiang, Shangfeng,Zeng, Yachao,et al. Three-Dimensional Assembly of PtNi Alloy Nanosticks with Enhanced Electrocatalytic Activity and Ultrahigh Stability for the Oxygen Reduction Reaction[J]. CHEMELECTROCHEM,2017,4(6):1436-1442. |
| APA | Yi, Baolian,Jiang, Shangfeng,Zeng, Yachao,Zhang, Hongjie,&Shao, Zhigang.(2017).Three-Dimensional Assembly of PtNi Alloy Nanosticks with Enhanced Electrocatalytic Activity and Ultrahigh Stability for the Oxygen Reduction Reaction.CHEMELECTROCHEM,4(6),1436-1442. |
| MLA | Yi, Baolian,et al."Three-Dimensional Assembly of PtNi Alloy Nanosticks with Enhanced Electrocatalytic Activity and Ultrahigh Stability for the Oxygen Reduction Reaction".CHEMELECTROCHEM 4.6(2017):1436-1442. |
入库方式： OAI收割
来源：大连化学物理研究所
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