Surface structure and electrochemical characteristics of graphite fluorinated by elemental fluorine and plasma treatment using CF4

Tsuyoshi Nakajima; Vinay Gupta; Yoshimi Ohzawa; Hiroyuki Iwata; Alain Tressaud; Etine Durand

doi:10.1080/10587250290113943

Surface structure and electrochemical characteristics of graphite fluorinated by elemental fluorine and plasma treatment using CF₄

Tsuyoshi Nakajima
, Vinay Gupta
, Yoshimi Ohzawa
, Hiroyuki Iwata
, Alain Tressaud
, Etine Durand

Physics

Research output: Contribution to journal › Conference article › peer-review

5 Scopus citations

Abstract

Surface modification of graphite powder has been performed by elemental fluorine and radiofrequency plasma fluorination. Both of the methods enlarge the surface areas of graphite samples and change their pore volume distribution. Surface-fluorinated graphite samples demonstrate the capacities higher than those of original samples and even the theoretical capacity of graphite, 372 mAhg^-1 without reducing the first coulombic efficiencies. The increments of the capacities are ∼5, ∼10 and ∼15% for graphite samples with average particle diameters of 7, 25 and 40 μm, respectively.

Original language	British English
Pages (from-to)	[517]/103-[522]/108
Journal	Molecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals
Volume	388
Issue number	PART 3
DOIs	https://doi.org/10.1080/10587250290113943
State	Published - 2002
Event	Proceedings of the First International Symposium on Nanocarbons - Nagano, Japan Duration: 14 Nov 2001 → 16 Nov 2001

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

Graphite electrode
Lithium ion battery
Surface fluorination
Surface structure

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10.1080/10587250290113943

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Cite this

Nakajima, T., Gupta, V., Ohzawa, Y., Iwata, H., Tressaud, A., & Durand, E. (2002). Surface structure and electrochemical characteristics of graphite fluorinated by elemental fluorine and plasma treatment using CF₄. Molecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals, 388(PART 3), [517]/103-[522]/108. https://doi.org/10.1080/10587250290113943

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abstract = "Surface modification of graphite powder has been performed by elemental fluorine and radiofrequency plasma fluorination. Both of the methods enlarge the surface areas of graphite samples and change their pore volume distribution. Surface-fluorinated graphite samples demonstrate the capacities higher than those of original samples and even the theoretical capacity of graphite, 372 mAhg-1 without reducing the first coulombic efficiencies. The increments of the capacities are ∼5, ∼10 and ∼15\% for graphite samples with average particle diameters of 7, 25 and 40 μm, respectively.",

keywords = "Graphite electrode, Lithium ion battery, Surface fluorination, Surface structure",

author = "Tsuyoshi Nakajima and Vinay Gupta and Yoshimi Ohzawa and Hiroyuki Iwata and Alain Tressaud and Etine Durand",

note = "Funding Information: The present study was financially supported by grant-in-aid for Research for the Future Program (nanocarbon) of Japan Society for the Promotion of Science (JSPS). The fluorine gas was supplied by Daikin Industries Ltd. The authors would like to gratefully acknowledge them.; Proceedings of the First International Symposium on Nanocarbons ; Conference date: 14-11-2001 Through 16-11-2001",

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Nakajima, T, Gupta, V, Ohzawa, Y, Iwata, H, Tressaud, A & Durand, E 2002, 'Surface structure and electrochemical characteristics of graphite fluorinated by elemental fluorine and plasma treatment using CF₄', Molecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals, vol. 388, no. PART 3, pp. [517]/103-[522]/108. https://doi.org/10.1080/10587250290113943

Surface structure and electrochemical characteristics of graphite fluorinated by elemental fluorine and plasma treatment using CF₄. / Nakajima, Tsuyoshi; Gupta, Vinay; Ohzawa, Yoshimi et al.
In: Molecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals, Vol. 388, No. PART 3, 2002, p. [517]/103-[522]/108.

Research output: Contribution to journal › Conference article › peer-review

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T1 - Surface structure and electrochemical characteristics of graphite fluorinated by elemental fluorine and plasma treatment using CF4

AU - Nakajima, Tsuyoshi

AU - Gupta, Vinay

AU - Ohzawa, Yoshimi

AU - Iwata, Hiroyuki

AU - Tressaud, Alain

AU - Durand, Etine

N1 - Funding Information: The present study was financially supported by grant-in-aid for Research for the Future Program (nanocarbon) of Japan Society for the Promotion of Science (JSPS). The fluorine gas was supplied by Daikin Industries Ltd. The authors would like to gratefully acknowledge them.

PY - 2002

Y1 - 2002

N2 - Surface modification of graphite powder has been performed by elemental fluorine and radiofrequency plasma fluorination. Both of the methods enlarge the surface areas of graphite samples and change their pore volume distribution. Surface-fluorinated graphite samples demonstrate the capacities higher than those of original samples and even the theoretical capacity of graphite, 372 mAhg-1 without reducing the first coulombic efficiencies. The increments of the capacities are ∼5, ∼10 and ∼15% for graphite samples with average particle diameters of 7, 25 and 40 μm, respectively.

AB - Surface modification of graphite powder has been performed by elemental fluorine and radiofrequency plasma fluorination. Both of the methods enlarge the surface areas of graphite samples and change their pore volume distribution. Surface-fluorinated graphite samples demonstrate the capacities higher than those of original samples and even the theoretical capacity of graphite, 372 mAhg-1 without reducing the first coulombic efficiencies. The increments of the capacities are ∼5, ∼10 and ∼15% for graphite samples with average particle diameters of 7, 25 and 40 μm, respectively.

KW - Graphite electrode

KW - Lithium ion battery

KW - Surface fluorination

KW - Surface structure

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T2 - Proceedings of the First International Symposium on Nanocarbons

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Nakajima T, Gupta V, Ohzawa Y, Iwata H, Tressaud A, Durand E. Surface structure and electrochemical characteristics of graphite fluorinated by elemental fluorine and plasma treatment using CF₄. Molecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals. 2002;388(PART 3):[517]/103-[522]/108. doi: 10.1080/10587250290113943