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A novel IrNi@PdIr/C core-shell electrocatalyst with enhanced activity and durability for the hydrogen oxidation reaction in alkaline anion exchange membrane fuel cells
Qin, Bowen1,2; Yu, Hongmei1; Jia, Jia1,2; Jun, Chi1,2; Gao, Xueqiang1,2; Yao, Dewei1,2; Sun, Xinye1,2; Song, Wei1; Yi, Baolian1; Shao, Zhigang1
Source PublicationNANOSCALE
2018-03-14
ISSN2040-3364
DOI10.1039/c7nr09452c
Volume10Issue:10Pages:4872-4881
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Multidisciplinary ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS KeywordOXYGEN REDUCTION REACTION ; COATED COPPER NANOWIRES ; MONOLAYER SHELL ; PERFORMANCE ; NANOPARTICLES ; CATALYSTS ; BASE ; GRAPHENE ; ACID ; NI
AbstractHerein, a novel non-platinum core-shell catalyst, namely, IrNi@PdIr/C was prepared via a galvanic replacement reaction; it exhibits enhanced hydrogen oxidation activity and excellent stability under alkaline conditions. Electrochemical experiments demonstrated that the mass and specific activities at 50 mV of IrNi@PdIr/C are 2.1 and 2.2 times that of commercial Pt/C in 0.1 M KOH at 298 K, respectively. Moreover, accelerated degradation tests have shown that the electrochemically active surface area (ECSA) of IrNi@PdIr/C reduces by only 5.1%, which is almost 4 times less than that of commercial Pt/C and the mass activity at 50 mV of IrNi@ PdIr/C after 2000 potential cycles is still 1.8 times higher than that of aged Pt/C. XRD and XPS analysis suggest that the enhanced HOR activity is attributed to the weakening of the hydrogen binding to the PdIr overlayers induced by the IrNi core. The better stability to potential cycling can be associated with the PdIr shell, which inhibits oxide formation. These results suggest that IrNi@PdIr/C is a promising non-platinum anode catalyst for alkaline anion exchange membrane fuel cells.
Language英语
WOS IDWOS:000428786800030
PublisherROYAL SOC CHEMISTRY
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/169101
Collection中国科学院大连化学物理研究所
Corresponding AuthorYu, Hongmei; Shao, Zhigang
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, Fuel Cell Syst & Engn Grp, Zhongshan Rd 457, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100039, Peoples R China
Recommended Citation
GB/T 7714
Qin, Bowen,Yu, Hongmei,Jia, Jia,et al. A novel IrNi@PdIr/C core-shell electrocatalyst with enhanced activity and durability for the hydrogen oxidation reaction in alkaline anion exchange membrane fuel cells[J]. NANOSCALE,2018,10(10):4872-4881.
APA Qin, Bowen.,Yu, Hongmei.,Jia, Jia.,Jun, Chi.,Gao, Xueqiang.,...&Shao, Zhigang.(2018).A novel IrNi@PdIr/C core-shell electrocatalyst with enhanced activity and durability for the hydrogen oxidation reaction in alkaline anion exchange membrane fuel cells.NANOSCALE,10(10),4872-4881.
MLA Qin, Bowen,et al."A novel IrNi@PdIr/C core-shell electrocatalyst with enhanced activity and durability for the hydrogen oxidation reaction in alkaline anion exchange membrane fuel cells".NANOSCALE 10.10(2018):4872-4881.
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