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题名: Nanostructured Polyaniline-Decorated Pt/C@PANI Core-Shell Catalyst with Enhanced Durability and Activity
作者: Chen, Siguo1;  Wei, Zidong1;  Qi, XueQiang1;  Dong, Lichun1;  Guo, Yu-Guo2;  Wan, Lijun2;  Shao, Zhigang3;  Li, Li1
刊名: JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
发表日期: 2012-08-15
DOI: 10.1021/ja306501x
卷: 134, 期:32, 页:13252-13255
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Multidisciplinary
研究领域[WOS]: Chemistry
英文摘要: We have designed and synthesized a polyaniline (PANI)-decorated Pt/C@PANI core-shell catalyst that shows enhanced catalyst activity and durability compared with nondecorated Pt/C. The experimental results demonstrate that the activity for the oxygen reduction reaction strongly depends on the thickness of the PANI shell and that the greatest enhancement in catalytic properties occurs at a thickness of 5 nm, followed by 2.5, 0, and 14 nm. Pt/C@PANI also demonstrates significantly improved stability compared with that of the unmodified Pt/C catalyst. The high activity and stability of the Pt/C@PANI catalyst is ascribed to its novel PANI-decorated core shell structure, which induces both electron delocalization between the Pt d orbitals and the PANI pi-conjugated ligand and electron transfer from Pt to PANI. The stable PANT shell also protects the carbon support from direct exposure to the corrosive environment.
关键词[WOS]: PEM FUEL-CELL ;  OXYGEN-REDUCTION ;  ELECTROCATALYSTS ;  NANOPARTICLES ;  CATHODE
语种: 英语
WOS记录号: WOS:000307487200028
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/143154
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.Chongqing Univ, Coll Chem & Chem Engn, State Key Lab Power Transmiss Equipment & Syst Se, Chongqing 400044, Peoples R China
2.Chinese Acad Sci, Inst Chem, Key Lab Mol Nanostruct & Nanotechnol, Beijing 100190, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Liaoning 116023, Peoples R China

Recommended Citation:
Chen, Siguo,Wei, Zidong,Qi, XueQiang,et al. Nanostructured Polyaniline-Decorated Pt/C@PANI Core-Shell Catalyst with Enhanced Durability and Activity[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,2012,134(32):13252-13255.
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