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Three-Dimensional Assembly of PtNi Alloy Nanosticks with Enhanced Electrocatalytic Activity and Ultrahigh Stability for the Oxygen Reduction Reaction
Zhang, Hongjie1,2; Yi, Baolian1; Jiang, Shangfeng1,2; Zeng, Yachao1,2; Shao, Zhigang1
KeywordOxygen Reduction Reaction Ptni Alloy Nanostick Assembly Enhanced Activity Ultrahigh Stability
Source PublicationCHEMELECTROCHEM
2017-06-01
DOI10.1002/celc.201700085
Volume4Issue:6Pages:1436-1442
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectElectrochemistry
WOS Research AreaElectrochemistry
WOS KeywordFUEL-CELLS ; CORE-SHELL ; PARTICLE-SIZE ; CATALYSTS ; METAL ; NANOPARTICLES ; DURABILITY ; NANOWIRES ; SURFACES ; METHANOL
AbstractA 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.
Language英语
WOS IDWOS:000407694400024
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/149832
Collection中国科学院大连化学物理研究所
Affiliation1.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
Recommended Citation
GB/T 7714
Zhang, Hongjie,Yi, Baolian,Jiang, Shangfeng,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 Zhang, Hongjie,Yi, Baolian,Jiang, Shangfeng,Zeng, Yachao,&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 Zhang, Hongjie,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.
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