Low-temperature synthesis of graphitized nanofibers for reversible lithium-ion insertion/extraction

被引：22

作者：

Doi, T

Fukuda, A

Iriyama, Y

Abe, T ^{[1
]}

Ogumi, Z

Nakagawa, K

Ando, T

机构：

[1] Kyoto Univ, Grad Sch Engn, Dept Energy & Hydrocarbon Chem, Nishikyo Ku, Kyoto 6158510, Japan

[2] NIMS, Tsukuba, Ibaraki 3050044, Japan

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2005年 / 7卷 / 01期

关键词：

nanofibres; carbon lithium ion insertion; low temperature synthesis; lithium ion batteries;

D O I：

10.1016/j.elecom.2004.10.009

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Graphitized carbon nanofibers are prepared from 2-propanol at 673 K by spray pyrolysis in which dc high voltage is applied to the spray nozzle. A mixture of helical and straight carbon nanofibers is observed, and their diameters are ca. 100-300 nm. The resultant carbon nanofibers show large capacity of around 340 mAh g(-1) and high reversibility with little hysteresis after the 2nd cycle in insertion/extraction reactions of lithium-ion, while a large irreversible capacity of 400 mAh g(-1) is observed at potentials below 0.9 V in the 1st cycle. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：10 / 13

页数：4

共 20 条

[1] Nanostructured Li ion insertion electrodes. 1. Discussion on fast transport and short path for ion diffusion [J].