泥浆
微观结构
阳极
羧甲基纤维素
石墨
材料科学
电池(电)
丁苯橡胶
锂离子电池
锂(药物)
色散(光学)
复合材料
流变学
分散剂
化学工程
冶金
化学
钠
电极
苯乙烯
聚合物
物理化学
功率(物理)
内分泌学
工程类
物理
光学
医学
量子力学
共聚物
作者
Sanghyuk Lim,Sun‐Hyung Kim,Kyung Hyun Ahn,Seung Jong Lee
标识
DOI:10.1016/j.jpowsour.2015.09.009
摘要
There have been many efforts to enhance the performance and the stability of Li-ion battery. It is crucial to develop a new material as well as to understand the mechanism of microstructure formation of the electrode in order to enhance the performance of the battery. In this study, the effect of sodium carboxymethyl cellulose (CMC) and styrene butadiene rubber (SBR) on the microstructure formation as well as on the rheological properties in the aqueous anode slurries is investigated. The graphite particles aggregate with each other due to their hydrophobicity and form a gel structure in an aqueous slurry. Both CMC and SBR induce the dispersion of the graphite particles by adsorbing onto the graphite surface. In the graphite/CMC/SBR slurry, the SBR can affect the dispersion of the graphite particles at low CMC concentration, while the microstructure is not changed regardless of added SBR at high CMC concentration because the SBR cannot adsorb on the graphite surface due to the presence of CMC. The microstructure of the slurry is also confirmed by the cryo-SEM images. Understanding the role of the binders on the microstructure formation will be helpful for the effective design of the battery slurries.
科研通智能强力驱动
Strongly Powered by AbleSci AI