Electrochemical lithium insertion of heat treated and chemically modified multi-wall carbon nanotubes

H. Touhara, I. Mukhopadhyay, F. Okino, S. Kawasaki, T. Kyotani, A. Tomita, W. K. Hsu

研究成果: Conference contribution

1 被引用数 (Scopus)

抄録

Highly aligned multi-wall carbon nanotubes (MWNTs), in the form of membrane (CNM) and powder (MWNTP) were examined for Li ion insertion host in aprotic medium. Effects of heat treatment and surface modification by elemental fluorine on the structure and electrochemical properties of the nanotubes were investigated. The surface structure and properties were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM) and N2 adsorption isotherm. The BET surface area of the nanotubes was very large compared to graphitic carbon. Heat treatment at 3000°C induced better crystallinity with a decrease in surface area. Fluorination at 50°C removed the disorder carbon from the surface of pristine sample. The reversible capacity in the first cycle was 516 mAh/g with a very high irreversible capacity. The reversible capacity increased from 22% to 80% after the second cycle.

本文言語English
ホスト出版物のタイトルNanonetwork Materials
ホスト出版物のサブタイトルFullerenes, Nanotubes, and Related Systems
編集者Tsuneya Ando, Yoshihiro Iwasawa, Koichi Kikuchi, Yahachi Saito, Susumu Saito, Mototada Kobayashi
出版社American Institute of Physics Inc.
ページ249-252
ページ数4
ISBN(電子版)0735400326, 9780735400320
DOI
出版ステータスPublished - 2001 10 16
イベントInternational Symposium on Nanonetwork Materials: Fullerenes, Nanotubes, and Related Systems 2001 - Kamakura, Japan
継続期間: 2001 1 152001 1 18

出版物シリーズ

名前AIP Conference Proceedings
590
ISSN(印刷版)0094-243X
ISSN(電子版)1551-7616

Other

OtherInternational Symposium on Nanonetwork Materials: Fullerenes, Nanotubes, and Related Systems 2001
国/地域Japan
CityKamakura
Period01/1/1501/1/18

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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