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题名: Preparation and characterization of Pt/C cathode catalysts for direct methanol fuel cells - Effect of different preparation and treatment methods
作者: Li, WZ;  Zhou, ZH;  Zhou, WJ;  Li, HQ;  Zhao, XS;  Wang, GX;  Sun, GQ;  Xin, Q
关键词: rotating disk electrode ;  direct methanol fuel cell ;  platinum ;  carbon ;  supported catalyst ;  cathode ;  oxygen-reductive reaction
刊名: CHINESE JOURNAL OF CATALYSIS
发表日期: 2003-06-01
卷: 24, 期:6, 页:465-470
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Applied ;  Chemistry, Physical ;  Engineering, Chemical
研究领域[WOS]: Chemistry ;  Engineering
英文摘要: The carbon-supported platinum catalysts 20% Pt/C were prepared by reduction of platinum salts with various reducing agents (such as NaBH4, HCHO and EG(ethylene glycol)) in various solvents (such as H2O, i-PrOH and EG). The Pt/C(EG) catalyst was treated at 900 degreesC in hydrogen atmosphere. The distribution and size of Pt metal particles in the Pt/C catalysts were characterized by XRD and TEM. The Pt metal particles of Pt/C(EG) catalyst are highly and homogeneously dispersed with a narrow size distribution, centering at 2.4 nm. The rotating disk electrode (RDE) tests showed that the activity order of the catalysts for orygen redutive reaction (ORR) is as follows: Pt/C(HCHO) > Pt/C(EG) > Pt/C(NaBH4). However, the Pt/C(EG) catalyst exhibits enhanced activity for ORR and superior performance in direct methanol fuel cell test as compared with the Pt/C catalysts prepared by the other two methods and the heat-treated Pt/C, which could have smaller Pt particle size. Pt/C(EG) catalyst showed better performance at activation-controlled region and comparative power density as compared with the commercial Pt/C catalyst. Cl- shows a negative effect on the ORR in both DMFC and RDE tests.
关键词[WOS]: OXYGEN REDUCTION CATALYSTS ;  TRANSITION-METAL SULFIDES ;  PARTICLE-SIZE ;  PLATINUM ;  ELECTROCATALYSIS ;  OXIDATION ;  ALLOYS ;  PERFORMANCE ;  SUPPORT ;  CARBON
语种: 英语
WOS记录号: WOS:000184218500015
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/138384
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, State Key Lab Catalysis, Direct Alcohol Fuel Cell Lab, Dalian 116023, Peoples R China

Recommended Citation:
Li, WZ,Zhou, ZH,Zhou, WJ,et al. Preparation and characterization of Pt/C cathode catalysts for direct methanol fuel cells - Effect of different preparation and treatment methods[J]. CHINESE JOURNAL OF CATALYSIS,2003,24(6):465-470.
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