中国科学院大连化学物理研究所机构知识库
Advanced  
DICP OpenIR  > 中国科学院大连化学物理研究所  > 期刊论文
题名: Stability of Ceria Supports in Pt-CeOx/C Catalysts
作者: Ou, Ding Rong1, 2;  Mori, Toshiyuki2;  Fugane, Keisuke2, 3;  Togasaki, Hirotaka2, 4;  Ye, Fei5;  Drennan, John6
刊名: JOURNAL OF PHYSICAL CHEMISTRY C
发表日期: 2011-10-06
DOI: 10.1021/jp205640k
卷: 115, 期:39, 页:19239-19245
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Nanoscience & Nanotechnology ;  Materials Science, Multidisciplinary
研究领域[WOS]: Chemistry ;  Science & Technology - Other Topics ;  Materials Science
英文摘要: Pt-CeOx/C (1.5 <= x <= 2) catalysts are promising electrode materials in polymer electrolyte membrane fuel cells (PEMFCs), especially in direct methanol fuel cells. In this study, the chemical and microstructural features of the catalysts before and after electrocatalytic reactions were compared, and then the stability of ceria supports in the catalysts was studied. It was found that, during the impregnation of Pt on ceria, Pt particles will invade into the ceria supports and the ceria will be partly reduced. Subsequently, in an acidic condition that is required in a fuel cell using an Before reactions acid-based polymer electrolyte, the cent supports were instable and easily dissolved into the sulfuric acid solution. As a result, only a small amount of ceria remains around/between the Pt particles. The experimental result suggested that the dissolution of ceria could be due to the partial reduction of the ceria supports in the as-prepared catalysts. Although only a small amount of ceria could remain in the catalysts, it can effectively prevent the growth and sintering of Pt particles and contribute to the CO tolerance and higher catalytic activities of the Pt-CeOx/C catalysts.
关键词[WOS]: ENERGY-LOSS SPECTROSCOPY ;  METHANOL FUEL-CELL ;  OXIDE NANOPARTICLES ;  CO OXIDATION ;  PLATINUM ;  ELECTROOXIDATION ;  ELECTROCATALYST ;  INTERFACE ;  CARBON ;  BLACK
语种: 英语
WOS记录号: WOS:000295245500042
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/142572
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

Files in This Item:

There are no files associated with this item.


作者单位: 1.Chinese Acad Sci, Lab Fuel Cells, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
2.Natl Inst Mat Sci, Innovat Ctr Nanomat Sci Environm & Energy, Tsukuba, Ibaraki 3050044, Japan
3.Hokkaido Univ, Grad Sch Chem Sci & Engn, Kita Ku, Sapporo, Hokkaido 0608628, Japan
4.Hokkaido Univ, Dept Chem, Grad Sch Sci, Kita Ku, Sapporo, Hokkaido 0608628, Japan
5.Dalian Univ Technol, Key Lab Mat Modificat, Sch Mat Sci & Engn, Dalian 116024, Liaoning, Peoples R China
6.Univ Queensland, Ctr Microscopy & Microanal, St Lucia, Qld 4072, Australia

Recommended Citation:
Ou, Ding Rong,Mori, Toshiyuki,Fugane, Keisuke,et al. Stability of Ceria Supports in Pt-CeOx/C Catalysts[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2011,115(39):19239-19245.
Service
 Recommend this item
 Sava as my favorate item
 Show this item's statistics
 Export Endnote File
Google Scholar
 Similar articles in Google Scholar
 [Ou, Ding Rong]'s Articles
 [Mori, Toshiyuki]'s Articles
 [Fugane, Keisuke]'s Articles
CSDL cross search
 Similar articles in CSDL Cross Search
 [Ou, Ding Rong]‘s Articles
 [Mori, Toshiyuki]‘s Articles
 [Fugane, Keisuke]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
  Add to CiteULike  Add to Connotea  Add to Del.icio.us  Add to Digg  Add to Reddit 
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Powered by CSpace