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Selective electrocatalysts toward a prototype of the membraneless direct methanol fuel cell
Alternative TitleSci Rep
Feng, Yan1,2; Yang, Jinhua3; Liu, Hui1,2; Ye, Feng1; Yang, Jun1,3
2014-01-22
Source PublicationSCIENTIFIC REPORTS
ISSN2045-2322
Volume4Issue:1
AbstractMastery over the structure of nanomaterials enables control of their properties to enhance their performance for a given application. Herein we demonstrate the design and fabrication of Pt-based nanomaterials with enhanced catalytic activity and superior selectivity toward the reactions in direct methanol fuel cells (DMFCs) upon the deep understanding of the mechanisms of these electrochemical reactions. In particular, the ternary Au@Ag2S-Pt nanocomposites display superior methanol oxidation reaction (MOR) selectivity due to the electronic coupling effect among different domains of the nanocomposites, while the cage-bell structured Pt-Ru nanoparticles exhibit excellent methanol tolerance for oxygen reduction reaction (ORR) at the cathode because of the differential diffusion of methanol and oxygen in the porous Ru shell of the cage-bell nanoparticles. The good catalytic selectivity of these Pt-based nanomaterials via structural construction enables a DMFCto be built without a proton exchange membrane between the fuel electrode and the oxygen electrode.; Mastery over the structure of nanomaterials enables control of their properties to enhance their performance for a given application. Herein we demonstrate the design and fabrication of Pt-based nanomaterials with enhanced catalytic activity and superior selectivity toward the reactions in direct methanol fuel cells (DMFCs) upon the deep understanding of the mechanisms of these electrochemical reactions. In particular, the ternary Au@Ag2S-Pt nanocomposites display superior methanol oxidation reaction (MOR) selectivity due to the electronic coupling effect among different domains of the nanocomposites, while the cage-bell structured Pt-Ru nanoparticles exhibit excellent methanol tolerance for oxygen reduction reaction (ORR) at the cathode because of the differential diffusion of methanol and oxygen in the porous Ru shell of the cage-bell nanoparticles. The good catalytic selectivity of these Pt-based nanomaterials via structural construction enables a DMFCto be built without a proton exchange membrane between the fuel electrode and the oxygen electrode.
KeywordOxygen Reduction Laminar-flow Composite Membranes Nafion Membrane Noble-metals Crossover Platinum Electrolyte Nanoparticles Nanocrystals
SubtypeArticle
WOS HeadingsScience & Technology
DOI10.1038/srep03813
URL查看原文
Indexed BySCI
Language英语
WOS KeywordOXYGEN REDUCTION ; LAMINAR-FLOW ; COMPOSITE MEMBRANES ; NAFION MEMBRANE ; NOBLE-METALS ; CROSSOVER ; PLATINUM ; ELECTROLYTE ; NANOPARTICLES ; NANOCRYSTALS
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000330044700004
Citation statistics
Cited Times:16[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/8200
Collection研究所(批量导入)
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Inst Bioengn & Nanotechnol, Singapore 138669, Singapore
Recommended Citation
GB/T 7714
Feng, Yan,Yang, Jinhua,Liu, Hui,et al. Selective electrocatalysts toward a prototype of the membraneless direct methanol fuel cell[J]. SCIENTIFIC REPORTS,2014,4(1).
APA Feng, Yan,Yang, Jinhua,Liu, Hui,Ye, Feng,&Yang, Jun.(2014).Selective electrocatalysts toward a prototype of the membraneless direct methanol fuel cell.SCIENTIFIC REPORTS,4(1).
MLA Feng, Yan,et al."Selective electrocatalysts toward a prototype of the membraneless direct methanol fuel cell".SCIENTIFIC REPORTS 4.1(2014).
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