DICP OpenIR
Subject Area物理化学
Enhanced Electron Penetration through an Ultrathin Graphene Layer for Highly Efficient Catalysis of the Hydrogen Evolution Reaction
Deng, Jiao; Ren, Pengju; Deng, Dehui; Bao, Xinhe; Ren PJ(任鹏举); Bao XH(包信和)
KeywordElectrocatalysis Graphene Non-precious Metals Hydrogen Evolution Reaction Nanoparticles
Source PublicationANGEWANDTE CHEMIE-INTERNATIONAL EDITION
2015-02-09
DOI10.1002/anie.201409524
Volume54Issue:7Pages:2100-2104
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Multidisciplinary
WOS Research AreaChemistry
WOS KeywordACTIVE EDGE SITES ; CARBON NANOTUBES ; OXYGEN REDUCTION ; PHOSPHIDE NANOPARTICLES ; ASTERISK-ASTERISK ; WATER ; ELECTROCATALYSIS ; MOLYBDENUM ; OXIDATION ; IRON
AbstractMajor challenges encountered when trying to replace precious-metal-based electrocatalysts of the hydrogen evolution reaction (HER) in acidic media are related to the low efficiency and stability of non-precious-metal compounds. Therefore, new concepts and strategies have to be devised to develop electrocatalysts that are based on earth-abundant materials. Herein, we report a hierarchical architecture that consists of ultrathin graphene shells (only 1-3 layers) that encapsulate a uniform CoNi nanoalloy to enhance its HER performance in acidic media. The optimized catalyst exhibits high stability and activity with an onset overpotential of almost zero versus the reversible hydrogen electrode (RHE) and an overpotential of only 142 mV at 10 mAcm(-2), which is quite close to that of commercial 40% Pt/C catalysts. Density functional theory (DFT) calculations indicate that the ultrathin graphene shells strongly promote electron penetration from the CoNi nanoalloy to the graphene surface. With nitrogen dopants, they synergistically increase the electron density on the graphene surface, which results in superior HER activity on the graphene shells.
Language英语
WOS IDWOS:000349391000013
Citation statistics
Cited Times:426[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/143744
Collection中国科学院大连化学物理研究所
Corresponding AuthorRen PJ(任鹏举); Bao XH(包信和)
AffiliationChinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
Recommended Citation
GB/T 7714
Deng, Jiao,Ren, Pengju,Deng, Dehui,et al. Enhanced Electron Penetration through an Ultrathin Graphene Layer for Highly Efficient Catalysis of the Hydrogen Evolution Reaction[J]. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION,2015,54(7):2100-2104.
APA Deng, Jiao,Ren, Pengju,Deng, Dehui,Bao, Xinhe,任鹏举,&包信和.(2015).Enhanced Electron Penetration through an Ultrathin Graphene Layer for Highly Efficient Catalysis of the Hydrogen Evolution Reaction.ANGEWANDTE CHEMIE-INTERNATIONAL EDITION,54(7),2100-2104.
MLA Deng, Jiao,et al."Enhanced Electron Penetration through an Ultrathin Graphene Layer for Highly Efficient Catalysis of the Hydrogen Evolution Reaction".ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 54.7(2015):2100-2104.
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