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: Pt based anode catalysts for direct ethanol fuel cells
作者: Zhou, WJ;  Zhou, ZH;  Song, SQ;  Li, WZ;  Sun, GQ;  Tsiakaras, P;  Xin, Q
关键词: direct ethanol fuel cells ;  PtRu ;  PtSn ;  Nafion (R) ;  proton exchange membrane ;  anode catalyst
刊名: APPLIED CATALYSIS B-ENVIRONMENTAL
发表日期: 2003-11-10
DOI: 10.1016/S0926-3373(03)00218-2
卷: 46, 期:2, 页:273-285
收录类别: SCI
文章类型: Article
部门归属: 305
项目归属: 305
产权排名: 1;1
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Engineering, Environmental ;  Engineering, Chemical
研究领域[WOS]: Chemistry ;  Engineering
英文摘要: In the present work several Pt-based anode catalysts supported on carbon XC-72R were prepared with a novel method and characterized by means of XRD, TEM and XPS analysis. It was found that all these catalysts are consisted of uniform nanosized particles with sharp distribution and Pt lattice parameter decreases with the addition of Ru or Pd and increases with the addition of Sn or W. Cyclic voltammetry (CV) measurements and single direct ethanol fuel cell (DEFC) tests jointly showed that the presence of Sn, Ru and W enhances the activity of Pt towards ethanol electro-oxidation in the following order: Pt1Sn1/C > Pt1Ru1/C > Pt1W1/C > Pt1Pd1/C > Pt/C. Moreover, Pt1Ru1/C further modified by W and Mo showed improved ethanol electro-oxidation activity, but its DEFC performance was found to be inferior to that measured for Pt1Sn1/C. Under this respect, several PtSn/C catalysts with different Pt/Sn atomic ratio were also identically prepared and characterized and their direct ethanol fuel cell performances were evaluated. It was found that the single direct ethanol fuel cell having Pt1Sn1/C or Pt3Sn2/C or Pt2Sn1/C as anode catalyst showed better performances than those with Pt3Sn1/C or Pt4Sn1/C. It was also found that the latter two cells exhibited higher performances than the single cell using Pt1Ru1/C, which is exclusively used in PEMFC as anode catalyst for both methanol electro-oxidation and CO-tolerance. This distinct difference in DEFC performance between the catalysts examined here would be attributed to the so-called bifunctional mechanism and to the electronic interaction between Pt and additives. It is thought that an amount of -OHads, an amount of surface Pt active sites and the conductivity effect of PtSn/C catalysts would determine the activity of PtSn/C with different Pt/Sn ratios. At lower temperature values or at low current density regions where the electro-oxidation of ethanol is considered not so fast and its chemisorption is not the rate-determining step, the Pt3Sn2/C seems to be more suitable for the direct ethanol fuel cell. At 75 degreesC, the single ethanol fuel cell with Pt3Sn2/C as anode catalyst showed a comparable performance to that with Pt2Sn1/C, but at higher temperature of 90 degreesC, the latter presented much better performance. It is thought from a practical point of view that Pt2Sn1/C, supplying sufficient -OHads and having adequate active Pt sites and acceptable ohmic effect, could be the appropriate anode catalyst for DEFC. (C) 2003 Elsevier B.V. All rights reserved.
关键词[WOS]: ELECTROCATALYTIC OXIDATION ;  METHANOL ELECTROOXIDATION ;  CHEMICAL-COMPOSITION ;  PLATINUM-ELECTRODES ;  MASS-SPECTROMETRY ;  PT-RU ;  SN ;  CARBON ;  PERFORMANCE ;  TERNARY
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000186259900006
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/82041
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:
File Name/ File Size Content Type Version Access License
2003T35Z0J1721.pdf(299KB)----开放获取--View 联系获取全文

作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Direct Alcohol Fuel Cell Lab, Dalian 116023, Peoples R China
2.Univ Thessalia, Dept Mech & Ind Engn, GR-38334 Volos 7, Greece
3.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China

Recommended Citation:
Zhou, WJ,Zhou, ZH,Song, SQ,et al. Pt based anode catalysts for direct ethanol fuel cells[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2003,46(2):273-285.
Service
 Recommend this item
 Sava as my favorate item
 Show this item's statistics
 Export Endnote File
Google Scholar
 Similar articles in Google Scholar
 [Zhou, WJ]'s Articles
 [Zhou, ZH]'s Articles
 [Song, SQ]'s Articles
CSDL cross search
 Similar articles in CSDL Cross Search
 [Zhou, WJ]‘s Articles
 [Zhou, ZH]‘s Articles
 [Song, SQ]‘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 
文件名: 2003T35Z0J1721.pdf
格式: Adobe PDF
此文件暂不支持浏览
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