DICP OpenIR
Controlled synthesis of high metal-loading, Pt-based electrocatalysts with enhanced activity and durability toward oxygen reduction reaction
Li, Shushuang1; Liu, Huiyuan1; Wang, Ying1,2; Xu, Wei1,2; Li, Jia1,2; Liu, Yuan1; Guo, Xinwen2; Song, Yujiang1
Source PublicationRSC ADVANCES
2015
DOI10.1039/c4ra16026f
Volume5Issue:12Pages:8787-8792
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Multidisciplinary
WOS Research AreaChemistry
WOS KeywordFUEL-CELL APPLICATIONS ; PLATINUM ; CARBON ; NANOPARTICLES ; ELECTROOXIDATION ; NANODENDRITES ; MORPHOLOGY ; CATALYSTS ; SURFACES ; ALLOYS
AbstractHigh metal-loading Pt/C electrocatalysts are much sought after for the fabrication of thin-layered membrane electrode assemblies (MEA) suitable for mass transport and balance control of water and heat. However, such electrocatalysts are still limited to commercial Pt/C, comprised of carbon-supported, 2-5 nm Pt particles without size and size uniformity control, causing poor activity and durability toward oxygen reduction reaction (ORR). Herein, we report the controlled synthesis of 59.9 wt% Pt/C by using metallic ion-containing reversed micelles adsorbed on carbon. Combined with a simple surfactant removal method of washing with water, this unique confining approach enables easy control over the size and size uniformity of the resultant Pt/C, leading to significantly improved activity and durability for ORR compared with commercial 60 wt% Pt/C. The ORR activity enhancement arises from a smaller average size of Pt nanoparticles in combination with a narrower size distribution, with more Pt nanoparticles falling in an optimal size range of 2-4 nm with the highest ORR activity. The narrower size distribution of our Pt/C also makes the Pt nanoparticles resistant to the dissolution-redeposition Ostwald ripening process, in which small Pt nanoparticles gradually shrink until they disappear, while large ones become bigger and bigger.
Language英语
WOS IDWOS:000347721300031
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/146008
Collection中国科学院大连化学物理研究所
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Labs Clean Energy DNL, Dalian 116023, Peoples R China
2.Dalian Univ Technol, Div Chem Environm & Biol Sci & Technol, Dalian 116024, Peoples R China
Recommended Citation
GB/T 7714
Li, Shushuang,Liu, Huiyuan,Wang, Ying,et al. Controlled synthesis of high metal-loading, Pt-based electrocatalysts with enhanced activity and durability toward oxygen reduction reaction[J]. RSC ADVANCES,2015,5(12):8787-8792.
APA Li, Shushuang.,Liu, Huiyuan.,Wang, Ying.,Xu, Wei.,Li, Jia.,...&Song, Yujiang.(2015).Controlled synthesis of high metal-loading, Pt-based electrocatalysts with enhanced activity and durability toward oxygen reduction reaction.RSC ADVANCES,5(12),8787-8792.
MLA Li, Shushuang,et al."Controlled synthesis of high metal-loading, Pt-based electrocatalysts with enhanced activity and durability toward oxygen reduction reaction".RSC ADVANCES 5.12(2015):8787-8792.
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