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学科主题: 物理化学
题名: Mesoporous TiN as a Noncarbon Support of Ag-Rich PtAg Nanoalloy Catalysts for Oxygen Reduction Reaction in Alkaline Media
作者: Cui, Zhiming1;  Yang, Minghui1, 2;  Chen, Hao1;  Zhao, Mengtian1;  DiSalvo, Francis J.1
通讯作者: F.J.DiSalvo
关键词: alloy ;  fuel cell ;  noncarbon support ;  oxygen reduction reaction ;  titanium nitride
刊名: CHEMSUSCHEM
发表日期: 2014-12-01
DOI: 10.1002/cssc.201402726
卷: 7, 期:12, 页:3356-3361
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: There has been growing interest in noncarbon supports for fuel cell reactions, especially for the oxygen reduction reaction (ORR) in alkaline media. Herein, we report a robust mesoporous titanium nitride (TiN) which is not only kinetically stable in alkaline media, but also electrochemically stable in the potential range of fuel cell operation. This binary nitride exhibits an order of magnitude higher electronic conductivity than carbon black. Bimetallic Ag-rich PtAg nanoalloy is selected as the catalyst for the ORR in alkaline media due to their superior activity and relatively low cost. TiN-supported Pt1Ag9 nanoalloy catalysts are synthesized by a new and efficient approach with KEt3BH as reducing agent and THF as solvent. Pt1Ag9/TiN exhibits much higher mass activity and durability for the ORR in alkaline media than Pt1Ag9/C, Pt/C and Ag/C catalysts, suggesting that mesoporous TiN is a very promising support in alkaline media.
关键词[WOS]: TITANIUM NITRIDE ;  ELECTROCATALYSTS ;  NANOPARTICLES ;  ELECTRODES ;  PLATINUM ;  CELL ;  DEGRADATION ;  PERFORMANCE ;  CATHODES ;  OXIDES
语种: 英语
WOS记录号: WOS:000345976200024
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/144006
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.Cornell Univ, Dept Chem & Chem Biol, Ithaca, NY 14853 USA
2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China

Recommended Citation:
Cui, Zhiming,Yang, Minghui,Chen, Hao,et al. Mesoporous TiN as a Noncarbon Support of Ag-Rich PtAg Nanoalloy Catalysts for Oxygen Reduction Reaction in Alkaline Media[J]. CHEMSUSCHEM,2014,7(12):3356-3361.
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