Show simple item record

AuthorYoussry, Mohamed
AuthorGuyomard, Dominique
AuthorLestriez, Bernard
Available date2022-06-12T05:49:30Z
Publication Date2015-01-01
Publication NamePhysical Chemistry Chemical Physics
Identifierhttp://dx.doi.org/10.1039/c5cp06303e
CitationYoussry, Mohamed, Dominique Guyomard, and Bernard Lestriez. "Suspensions of carbon nanofibers in organic medium: Rheo-electrical properties." Physical Chemistry Chemical Physics 17, no. 48 (2015): 32316-32327.
ISSN1463-9076
URIhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84948800343&origin=inward
URIhttp://hdl.handle.net/10576/32063
AbstractThe nonaqueous suspensions of carbon nanofibers (CNFs) in 1 M lithium bis(trifluoromethanesulfonaimide) in propylene carbonate electrolyte reveal unique structural evolution and shear-induced transition due to the high aspect ratio. The rheo-electrical behavior elucidates a microstructural transition from entangled-to-aggregated networks above a distinct percolation threshold. Under shear flow, both networks show a three-regime flow curve and an inverted-bell-like conductivity curve as a consequence of shear-induced alignment (entangled network) and shear-induced breaking up (aggregated network). The different particle morphology of carbon nanofibers (anisometric) and carbon black (CB; isometric) causes different aggregation mechanisms (aggregate vs. particulate) and then varied microstructure for their suspensions in the same electrolyte. This fact explains the higher rigidity and lower electric conductivity of CNFs than CB suspensions. Interestingly, the suspension of hybrid carbons at the optimum mixing ratio merges the advantages of both carbons to operate efficiently as precursors in the formulation of electrodes for energy storage systems.
Languageen
PublisherRoyal Society of Chemistry
SubjectCarbon nanofibers
TitleSuspensions of carbon nanofibers in organic medium: Rheo-electrical properties
TypeArticle
Pagination32316-32327
Issue Number48
Volume Number17
ESSN1463-9084
dc.accessType Open Access


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record