Reactivity of Carbon Nanofibers with Fluorine Gas

Chamssedine, Fadel; Dubois, Marc; Guérin, Katia; Giraudet, Jérôme; Masin, Francis; Ivanov, Dimitri A.; Vidal, Loı̈c; Yazami, Rachid; Hamwi, A.

doi:10.1021/cm061731m

Cited by 80 publications

(69 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Here, the fluorination progresses towards the core without major structural changes of the external fluorinated parts. Unfluorinated domains (core) are still present as clearly evidenced by 13 C NMR analysis [14]. iv) When T F is higher than 450°C, a jump in composition is observed up to 480°C, then the F:C ratio reaches a value around 1.0.…”

Section: Structure Of Fluorinated Carbon Nanofibresmentioning

confidence: 84%

“…The increase of the fluorination temperature T F leads to a progressive fluorination which proceeds from the outer part of the carbon nanofibre towards its core. The physicochemical characteristics of the CNF-Fs samples have been extensively studied by complementary techniques ( 19 F, 13 C solid state NMR, EPR, XRD, Raman spectroscopy) [14].…”

Section: Structure Of Fluorinated Carbon Nanofibresmentioning

confidence: 99%

“…11 d) clearly shows the fibrous nature of the film which is composed of individual nanofibres embedded in a more disordered matrix. 19 F NMR [14]) for the initial compounds and the tribofilms. For initial CNF-Fs, the increase of the I D /I G ratio for F:C \ 0.15 and its stabilization for higher fluorine contents indicate that the size reduction of the graphitic domains mainly occurs in the first steps of the fluorination process.…”

Section: Study Of the Tribofilmmentioning

confidence: 99%

“…High resolution transmission electron microscopy (HRTEM) images collected on individual carbon nanofibres[14]: a Pristine CNFs: the HR micrograph reveals lattice fringes corresponding to graphene planes stacking. b CNF-Fs fluorinated carbon nanofibres at 420°C: lattice fringes corresponding to the graphene planes stacking are visible in the internal part of the fibres.…”

mentioning

confidence: 99%

“…Evolution of friction coefficient of fluorinated carbon nanofibres as a function of the F:C ratio (determined by19 F NMR[14]) in pentane and air atmosphere (after pentane evaporation). The friction coefficient decreases for F:C \ 0.15 and remains stable in the 0.2-0.6 F:C range.…”

mentioning

confidence: 99%

See 4 more Smart Citations

Tribological Properties of Fluorinated Carbon Nanofibres

Pandorf¹,

Himmel²,

Mansot³

et al. 2009

Tribol Lett

Self Cite

View full text Add to dashboard Cite

This work is concerned with the study of the tribological properties of fluorinated carbon nanofibres with various fluorination rates. The tribological tests, carried out in the presence of pentane and in air after liquid's evaporation demonstrate good friction properties for all the compounds (the friction coefficients ranging between 0.04 and 0.06 in the presence of pentane and between 0.07 and 0.09 in air). Raman analyses reveal that the friction process induces a partial deterioration of the carbon fibres and SEM studies show that the tribofilm is composed of individual fibres embedded in a more disordered carbonaceous matrix. The fibrous nature of the tribofilm and the experimental relationship between friction coefficient and fluorination rate strongly support that friction properties of fluorinated carbon nanofibres are governed by surface fibres interaction. The modification of the nanofibres surface tension by action of pentane or optimum fluorination rate leads to a lowering of interfibres interactions resulting in an improvement of the friction properties.

show abstract

Section: Structure Of Fluorinated Carbon Nanofibresmentioning

confidence: 84%

Section: Structure Of Fluorinated Carbon Nanofibresmentioning

confidence: 99%

Section: Study Of the Tribofilmmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

See 3 more Smart Citations

Tribological Properties of Fluorinated Carbon Nanofibres

Pandorf¹,

Himmel²,

Mansot³

et al. 2009

Tribol Lett

Self Cite

View full text Add to dashboard Cite

show abstract

Mesoporous Nonsilica Materials

Zhao

Wan

Zhou

2013

Ordered Mesoporous Materials

View full text Add to dashboard Cite

Fluorinated Nanographite as a Cathode Material for Lithium Primary Batteries

Wang

et al. 2019

ChemElectroChem

View full text Add to dashboard Cite

Lithium/fluorinated carbon (Li/CFx) batteries face the problems of low rate performance and initial voltage delay. Herein, we propose a novel type of fluorinated nanographite as a cathode material for Li/CFx batteries through the direct fluorination of nanographite. The structure of fluorinated nanographite, including crystalline phase, particle size, fluorine content, and the properties of C−F bonding, strongly depend on the fluorination temperature. The fluorinated nanographite prepared at 450 °C (FG‐450) shows the highest specific capacity, 837.4 mAh g−1 at 10 mA g−1, along with a discharge plateau of 2.54 V, responding to an energy density of 2004.5 Wh kg−1. The highlights of the fluorinated nanographite are to deliver high rate performance and overcome the initial voltage delay. FG‐450 can be discharged at a high rate of about 3.6 C, delivering a high power density of 5460 W kg−1 with a remaining energy density of 1030.5 Wh kg−1. The good electrochemical performance of the FG‐450 sample is ascribed to the combined effect of its nanoparticle size, large specific surface area, and continuous stacking porosity.

show abstract

Reactivity of Carbon Nanofibers with Fluorine Gas

Cited by 80 publications

References 41 publications

Tribological Properties of Fluorinated Carbon Nanofibres

Tribological Properties of Fluorinated Carbon Nanofibres

Mesoporous Nonsilica Materials

Fluorinated Nanographite as a Cathode Material for Lithium Primary Batteries

Contact Info

Product

Resources

About