Property control of new forms of carbon materials by fluorination

Hidekazu Touhara; Junichi Inahara; Tomotaka Mizuno; Yu Yokoyama; Satoru Okanao; Katsuaki Yanagiuch; Indrajit Mukopadhyay; Shinji Kawasaki; Fujio Okino; Hirofusa Shirai; W. H. Xu; T. Kyotani; A. Tomita

doi:10.1016/S0022-1139(02)00026-X

Property control of new forms of carbon materials by fluorination

Hidekazu Touhara, Junichi Inahara, Tomotaka Mizuno, Yu Yokoyama, Satoru Okanao, Katsuaki Yanagiuch, Indrajit Mukopadhyay, Shinji Kawasaki, Fujio Okino, Hirofusa Shirai, W. H. Xu, T. Kyotani, A. Tomita

ENG - Chemical Engineering

Research output: Contribution to journal › Article › peer-review

78 Citations (Scopus)

Abstract

Multiwall carbon nanotubes (MWNTs) based on the template carbonization technique were fluorinated in a temperature range 323-473 K by elemental fluorine. The fluorination of the carbon nanotubes results in functionalization and modification of pristine nanotubes with respect to adsorption and electrochemical properties. Selective fluorination of the inner surface of the carbon nanotubes, brings about a decrease in the surface free energy of the inner surface of the tubes and an increase in colombic efficiency of Li/nanotubes rechargeable cells in an aprotic medium. Electrochemical fluoride-ion doping of fullerene C₆₀ thin films (250-450 nm) was carried out in a fluoride-ion conductive solution, MeCN solution of 1 M Et₄NF·4HF. Galvanostatic oxidation yielded C₆₀F_ca.1-3 where fluorine exists as a semi-ionic species in the cavity surrounded by C₆₀ molecules without forming covalent C-F bonds

Original language	English
Pages (from-to)	181-188
Number of pages	8
Journal	Journal of Fluorine Chemistry
Volume	114
Issue number	2
DOIs	https://doi.org/10.1016/S0022-1139(02)00026-X
Publication status	Published - 2002

Keywords

Adsorption
Electrochemical fluorine doping
Fluorination by elemental fluorine
Fullerene C
Lithium cells
Multiwall carbon nanotubes

ASJC Scopus subject areas

Biochemistry
Environmental Chemistry
Physical and Theoretical Chemistry
Organic Chemistry
Inorganic Chemistry

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10.1016/S0022-1139(02)00026-X

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title = "Property control of new forms of carbon materials by fluorination",

abstract = "Multiwall carbon nanotubes (MWNTs) based on the template carbonization technique were fluorinated in a temperature range 323-473 K by elemental fluorine. The fluorination of the carbon nanotubes results in functionalization and modification of pristine nanotubes with respect to adsorption and electrochemical properties. Selective fluorination of the inner surface of the carbon nanotubes, brings about a decrease in the surface free energy of the inner surface of the tubes and an increase in colombic efficiency of Li/nanotubes rechargeable cells in an aprotic medium. Electrochemical fluoride-ion doping of fullerene C60 thin films (250-450 nm) was carried out in a fluoride-ion conductive solution, MeCN solution of 1 M Et4NF·4HF. Galvanostatic oxidation yielded C60Fca.1-3 where fluorine exists as a semi-ionic species in the cavity surrounded by C60 molecules without forming covalent C-F bonds",

keywords = "Adsorption, Electrochemical fluorine doping, Fluorination by elemental fluorine, Fullerene C, Lithium cells, Multiwall carbon nanotubes",

author = "Hidekazu Touhara and Junichi Inahara and Tomotaka Mizuno and Yu Yokoyama and Satoru Okanao and Katsuaki Yanagiuch and Indrajit Mukopadhyay and Shinji Kawasaki and Fujio Okino and Hirofusa Shirai and Xu, {W. H.} and T. Kyotani and A. Tomita",

note = "Funding Information: The authors wish to thank Dr. Momota at Morita Chemicals for the preparation of the MeCN solution of 1 M Et 4 NF·4HF. We would also like to thank Daikin Industries, Ltd. for supplying the elemental fluorine. This work was supported by Grant-in-Aid for Scientific Research no. 11555229 and for COE Research (10CE4733) by the Ministry of Education, Culture, Sports, Science and Technology, and Research for the Future Program (RFTF) of JSPS, “nanocarbons for Advanced Energy Devices.”",

year = "2002",

doi = "10.1016/S0022-1139(02)00026-X",

language = "English",

volume = "114",

pages = "181--188",

journal = "Journal of Fluorine Chemistry",

issn = "0022-1139",

publisher = "Elsevier BV",

number = "2",

}

TY - JOUR

T1 - Property control of new forms of carbon materials by fluorination

AU - Touhara, Hidekazu

AU - Inahara, Junichi

AU - Mizuno, Tomotaka

AU - Yokoyama, Yu

AU - Okanao, Satoru

AU - Yanagiuch, Katsuaki

AU - Mukopadhyay, Indrajit

AU - Kawasaki, Shinji

AU - Okino, Fujio

AU - Shirai, Hirofusa

AU - Xu, W. H.

AU - Kyotani, T.

AU - Tomita, A.

N1 - Funding Information: The authors wish to thank Dr. Momota at Morita Chemicals for the preparation of the MeCN solution of 1 M Et 4 NF·4HF. We would also like to thank Daikin Industries, Ltd. for supplying the elemental fluorine. This work was supported by Grant-in-Aid for Scientific Research no. 11555229 and for COE Research (10CE4733) by the Ministry of Education, Culture, Sports, Science and Technology, and Research for the Future Program (RFTF) of JSPS, “nanocarbons for Advanced Energy Devices.”

PY - 2002

Y1 - 2002

N2 - Multiwall carbon nanotubes (MWNTs) based on the template carbonization technique were fluorinated in a temperature range 323-473 K by elemental fluorine. The fluorination of the carbon nanotubes results in functionalization and modification of pristine nanotubes with respect to adsorption and electrochemical properties. Selective fluorination of the inner surface of the carbon nanotubes, brings about a decrease in the surface free energy of the inner surface of the tubes and an increase in colombic efficiency of Li/nanotubes rechargeable cells in an aprotic medium. Electrochemical fluoride-ion doping of fullerene C60 thin films (250-450 nm) was carried out in a fluoride-ion conductive solution, MeCN solution of 1 M Et4NF·4HF. Galvanostatic oxidation yielded C60Fca.1-3 where fluorine exists as a semi-ionic species in the cavity surrounded by C60 molecules without forming covalent C-F bonds

AB - Multiwall carbon nanotubes (MWNTs) based on the template carbonization technique were fluorinated in a temperature range 323-473 K by elemental fluorine. The fluorination of the carbon nanotubes results in functionalization and modification of pristine nanotubes with respect to adsorption and electrochemical properties. Selective fluorination of the inner surface of the carbon nanotubes, brings about a decrease in the surface free energy of the inner surface of the tubes and an increase in colombic efficiency of Li/nanotubes rechargeable cells in an aprotic medium. Electrochemical fluoride-ion doping of fullerene C60 thin films (250-450 nm) was carried out in a fluoride-ion conductive solution, MeCN solution of 1 M Et4NF·4HF. Galvanostatic oxidation yielded C60Fca.1-3 where fluorine exists as a semi-ionic species in the cavity surrounded by C60 molecules without forming covalent C-F bonds

KW - Adsorption

KW - Electrochemical fluorine doping

KW - Fluorination by elemental fluorine

KW - Fullerene C

KW - Lithium cells

KW - Multiwall carbon nanotubes

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EP - 188

JO - Journal of Fluorine Chemistry

JF - Journal of Fluorine Chemistry

IS - 2

ER -

Property control of new forms of carbon materials by fluorination

Abstract

Keywords

ASJC Scopus subject areas

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