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Morphology inherence from hollow MOFs to hollow carbon polyhedrons in preparing carbon-based electrocatalysts

TitleMorphology inherence from hollow MOFs to hollow carbon polyhedrons in preparing carbon-based electrocatalysts
Publication TypeJournal Article
Year of Publication2017
AuthorsPei, YC, Qi, ZY, Li, XL, Maligal-Ganesh, RV, Goh, TW, Xiao, CX, Wang, TY, Huang, WK
JournalJournal of Materials Chemistry A
Volume5
Pagination6186-6192
Date Published04
Type of ArticleArticle
ISBN Number2050-7488
Accession NumberWOS:000397608000025
Keywordsbatteries, catalysis, chemistry, fuels, hierarchically porous carbon, high-surface-area, hydrogen storage capacity, lithium-ion, Materials Science, membrane fuel-cells, metal-organic frameworks, nitrogen, oxygen reduction reaction, spheres
Abstract

tion of unique hollow zeolitic imidazolate frameworks (ZIFs) for the synthesis of hollow carbon polyhedrons (HCPs) with well-defined morphologies. The hollow ZIF particles behave bi-functionally as a carbon source and a morphology directing agent. This method evidences the strong morphology inherence from the hollow ZIFs during the carbonization, advancing the significant simplicity and environmental friendliness of this synthesis strategy. The as-prepared HCPs show a uniform polyhedral morphology and large void interiors, which enable their superior ORR activity. Iron can be doped into the HCPs (Fe/HCPs), providing the Fe/HCPs with enhanced ORR properties (E-1/2 - 0.850 V) in comparison with those of HCPs. We highlight the efficient structural engineering to transform ZIFs into advanced carbon nanostructures accomplishing morphological control and high electrocatalytic activity.

DOI10.1039/c6ta10609a
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Alternate JournalJ. Mater. Chem. A