The effect of carboxymethyl cellulose swelling on the stability of natural graphite particulates in an aqueous medium for lithium ion battery anodes

被引：41
作者：
Lee, Jin-Hyon
Choi, Young-Min
Paik, Ungyu
Park, Jea-Gun
机构：
[1] Hanyang Univ, Div Adv Mat Sci Engn, Seoul 133791, South Korea
[2] Samsung Adv Inst Technol, Mat Lab, Suwon 440600, South Korea
[3] Hanyang Univ, Nano SOI Proc Lab, Seoul 133791, South Korea
来源：
JOURNAL OF ELECTROCERAMICS | 2006年 / 17卷 / 2-4期
关键词：
lithium ion battery; aqueous processing; natural graphite; swelling behavior; stability;
D O I：
10.1007/s10832-006-8975-4
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The effect of carboxymethyl cellulose (CMC) swelling on the stability and chemical properties of a natural graphite suspension in an aqueous medium was investigated. Suspensions prepared at different pH were characterized according to swelling behavior, rheology, green microstructural observation, and measurement of the pore size. A correlation was found between dispersion stability and electrochemical performance. It was found that the swelling of CMC was a critical factor influencing the stability of graphite suspensions. This was evidenced by observations of the green microstructures and changes noted in sedimentation behaviors. Electrochemical experiments using a Li/organic electrolyte/natural graphite anode half-cell and 750 mAh-class lithium ion cells exhibited an initial discharge capacity above 340 mAh g(-1) and an improved charge-discharge efficiency.
引用
收藏
页码：657 / 660
页数：4
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