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题名: Hierarchically ordered arrays with platinum coated PANI nanowires for highly efficient fuel cell electrodes
作者: Sun, Ruili1, 2;  Xia, Zhangxun1;  Shang, Lei1, 2;  Fu, Xudong1;  Li, Huanqiao1;  Wang, Suli1;  Sun, Gongquan1
刊名: JOURNAL OF MATERIALS CHEMISTRY A
发表日期: 2017-08-07
DOI: 10.1039/c7ta02500a
卷: 5, 期:29, 页:15260-15265
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Energy & Fuels ;  Materials Science, Multidisciplinary
研究领域[WOS]: Chemistry ;  Energy & Fuels ;  Materials Science
英文摘要: The 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.
关键词[WOS]: OXYGEN REDUCTION REACTION ;  MESOPOROUS CARBON ;  ELECTROCATALYSTS ;  MEMBRANE ;  SUPPORT ;  CATALYSTS ;  LAYER ;  NANOPARTICLES ;  CHALLENGES ;  NANOTUBES
语种: 英语
WOS记录号: WOS:000406187800036
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/151906
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.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:
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.
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