High capacity disordered carbons obtained from coconut shells as anode materials for lithium batteries

被引：70

作者：

Hwang, Yun Ju ^{[1
]}

Jeong, S. K. ^{[1
]}

Shin, J. S. ^{[1
]}

Nahm, Kee Suk ^{[1
]}

Stephan, A. Manuel

机构：

[1] Chonbuk Natl Univ, Sch Chem Engn & Technol, Chonju 561756, South Korea

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2008年 / 448卷 / 1-2期

关键词：

pyrolysis; BET-surface area; irreversible capacity; cycling stability; impedance analysis;

D O I：

10.1016/j.jallcom.2006.10.036

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Carbonaceous materials have been obtained by the pyrolysis of coconut shells at 800 and 900 degrees C with pore forming substances such as KOH and ZnCl2. The prepared carbons were subjected to XRD, SEM, BET-surface area and charge-discharge studies. The structure and morphology were greatly changed by porogens, which in turn influence the electrochemical properties of the carbonaceous materials. Nanocrystalline tin (Sn) particles were prepared by chemical reduction method. The cycling tests showed that the addition of nanotin with the active material offers a stable cycling behavior. The electrochemical impedance spectra for the Li/C cells have been made and the results are discussed. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：141 / 147

页数：7

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