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Hierarchically ordered arrays with platinum coated PANI nanowires for highly efficient fuel cell electrodes
Sun, Ruili1,2; Xia, Zhangxun1; Shang, Lei1,2; Fu, Xudong1; Li, Huanqiao1; Wang, Suli1; Sun, Gongquan1
Source PublicationJOURNAL OF MATERIALS CHEMISTRY A
2017-08-07
DOI10.1039/c7ta02500a
Volume5Issue:29Pages:15260-15265
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary
WOS Research AreaChemistry ; Energy & Fuels ; Materials Science
WOS KeywordOXYGEN REDUCTION REACTION ; MESOPOROUS CARBON ; ELECTROCATALYSTS ; MEMBRANE ; SUPPORT ; CATALYSTS ; LAYER ; NANOPARTICLES ; CHALLENGES ; NANOTUBES
AbstractThe fabrication of a novel electrode architecture with multi-scale orderliness is an effective strategy to enhance Pt utilization and decrease the mass transport polarization loss of proton exchange membrane fuel cells (PEMFCs). Here we report a hierarchically well-defined electrode with Pt nanowhiskers on aligned nanowires by a magnetron sputtering method. With the crystallographically preferential growth of Pt (111) facets, in association with the electron modification effects of PANI on Pt nanowhiskers, the electrode achieves outstanding electrochemical activity towards the oxygen reduction reaction (ORR) with a 2.19-fold enhancement of the specific activity and a similar mass specific activity at 0.9 V (vs. the RHE), compared to the state-of-the-art Pt-C electrode. The PEMFC fabricated with the Pt-PANI-GDL electrode shows excellent performance with a peak power density of 542 mW cm(-2), and a cathode mass specific power density of 5.7 W mg(Pt)(-1), which is 39% greater than that of PEMFCs equipped with a Pt-C electrode for enhanced electrochemical activity and mass transport.
Language英语
WOS IDWOS:000406187800036
Citation statistics
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/151906
Collection中国科学院大连化学物理研究所
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Div Fuel Cells & Battery, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Sun, Ruili,Xia, Zhangxun,Shang, Lei,et al. Hierarchically ordered arrays with platinum coated PANI nanowires for highly efficient fuel cell electrodes[J]. JOURNAL OF MATERIALS CHEMISTRY A,2017,5(29):15260-15265.
APA Sun, Ruili.,Xia, Zhangxun.,Shang, Lei.,Fu, Xudong.,Li, Huanqiao.,...&Sun, Gongquan.(2017).Hierarchically ordered arrays with platinum coated PANI nanowires for highly efficient fuel cell electrodes.JOURNAL OF MATERIALS CHEMISTRY A,5(29),15260-15265.
MLA Sun, Ruili,et al."Hierarchically ordered arrays with platinum coated PANI nanowires for highly efficient fuel cell electrodes".JOURNAL OF MATERIALS CHEMISTRY A 5.29(2017):15260-15265.
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