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Great-enhanced performance of Pt nanoparticles by the unique carbon quantum dot/reduced graphene oxide hybrid supports towards methanol electrochemical oxidation
Hong, Tian-Zeng1,2; Xue, Qiong3; Yang, Zhi-Yong3; Dong, Ya-Ping1
2016-01-30
Source PublicationJOURNAL OF POWER SOURCES
Volume303Pages:109-117
SubtypeArticle
AbstractThe Pt-carbon quantum dot (CQD)/reduced graphene oxide (RGO) catalysts are prepared by one pot reduction method and demonstrate ultraefficient performance towards methanol oxidation reaction (MOR). In the high content CQD products, Pt nanoparticles around 2-3 nm are dispersed uniformly on supporting materials. And the X-ray photoelectron spectroscopy analysis indicates that in the high content CQD products a large part of surface oxygen groups is contributed by CQD. The electrochemical tests reveal that the catalyst with the saturated CQD exhibits best performance in MOR: the mass and specific activity at forward peak position, the potential close to fuel cell operation and 3600 s of chronoamperometric curve are roughly 2-3 folds of the commercial Pt/C. Furthermore, the electrochemical data on the series of catalysts with different quantity of CQD disclose the improving tendency of MOR performance with the increasing content of cQp evidently. Overview the electrochemical and characterization results, we suggest CQD play multiple roles in the enhancement of Pt performance: present abundant nucleating and anchoring points to facilitate the formation of small size and uniform distributed Pt particles; act as spacer to alleviate restacking of RGO sheets; and provide fruitful surface oxygen groups to improve the antipoisonous ability of Pt. (C) 2015 Elsevier B.V. All rights reserved.
KeywordPt Catalyst Carbon Quantum Dot Graphene Methanol Oxidation Reaction Fuel Cell
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS KeywordOXYGEN REDUCTION REACTION ; METAL-FREE ELECTROCATALYST ; FUEL-CELLS ; NANODOTS SYNTHESIS ; CATALYST SUPPORT ; DOTS ; PLATINUM ; ELECTROOXIDATION ; COMPOSITES ; STRATEGY
Indexed BySCI
Language英语
WOS Research AreaChemistry ; Electrochemistry ; Energy & Fuels ; Materials Science
WOS SubjectChemistry, Physical ; Electrochemistry ; Energy & Fuels ; Materials Science, Multidisciplinary
WOS IDWOS:000370463400015
Citation statistics
Document Type期刊论文
Identifierhttp://ir.isl.ac.cn/handle/363002/6296
Collection青海盐湖研究所知识仓储
盐湖资源综合利用工程技术中心
Affiliation1.Chinese Acad Sci, Qinghai Inst Salt Lakes, Beijing 100864, Peoples R China
2.Univ Chinese Acad Sci, Beijing, Peoples R China
3.Univ Chinese Acad Sci, Sch Chem & Chem Engn, 19A Yuquanlu, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Hong, Tian-Zeng,Xue, Qiong,Yang, Zhi-Yong,et al. Great-enhanced performance of Pt nanoparticles by the unique carbon quantum dot/reduced graphene oxide hybrid supports towards methanol electrochemical oxidation[J]. JOURNAL OF POWER SOURCES,2016,303:109-117.
APA Hong, Tian-Zeng,Xue, Qiong,Yang, Zhi-Yong,&Dong, Ya-Ping.(2016).Great-enhanced performance of Pt nanoparticles by the unique carbon quantum dot/reduced graphene oxide hybrid supports towards methanol electrochemical oxidation.JOURNAL OF POWER SOURCES,303,109-117.
MLA Hong, Tian-Zeng,et al."Great-enhanced performance of Pt nanoparticles by the unique carbon quantum dot/reduced graphene oxide hybrid supports towards methanol electrochemical oxidation".JOURNAL OF POWER SOURCES 303(2016):109-117.
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