li-towarddesign-2014.pdf (1.8 MB)
Toward design of synergistically active carbon-based catalysts for electrocatalytic hydrogen evolution
journal contribution
posted on 2014-01-01, 00:00 authored by Y Zheng, Y Jiao, Luhua LiLuhua Li, Tan Xing, Ying (Ian) ChenYing (Ian) Chen, M Jaroniec, S Z QiaoReplacement of precious Pt catalyst with cost-effective alternatives would be significantly beneficial for hydrogen production via electrocatalytic hydrogen evolution reaction (HER). All candidates thus far are exclusively metallic catalysts, which suffer inherent corrosion and oxidation susceptibility during acidic proton-exchange membrane electrolysis. Herein, based on theoretical predictions, we designed and synthesized nitrogen (N) and phosphorus (P) dual-doped graphene as a nonmetallic electrocatalyst for sustainable and efficient hydrogen production. The N and P heteroatoms could coactivate the adjacent C atom in the graphene matrix by affecting its valence orbital energy levels to induce a synergistically enhanced reactivity toward HER. As a result, the dual-doped graphene showed higher electrocatalytic HER activity than single-doped ones and comparable performance to some of the traditional metallic catalysts.
History
Journal
ACS NanoVolume
8Issue
5Pagination
5290 - 5296Publisher
American Chemical SocietyLocation
Washington, D.C.Publisher DOI
Link to full text
eISSN
1936-086XLanguage
engPublication classification
C Journal article; C1 Refereed article in a scholarly journalCopyright notice
2014, American Chemical SocietyUsage metrics
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No categories selectedKeywords
Science & TechnologyPhysical SciencesTechnologyChemistry, MultidisciplinaryChemistry, PhysicalNanoscience & NanotechnologyMaterials Science, MultidisciplinaryChemistryScience & Technology - Other TopicsMaterials Sciencedual-doped graphenesynergistic catalysishydrogen evolutionmetal-free catalysistheoretical predictionOXYGEN REDUCTIONMESOPOROUS GRAPHENEALKALINE-MEDIUMO-2 REDUCTIONEDGE SITESMOS2PERFORMANCENANOSHEETSH-2
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