羧甲基纤维素对锂离子电池负极浆料流变性的影响

IF 7.9 2区 化学 Q1 CHEMISTRY, PHYSICAL Current Opinion in Colloid & Interface Science Pub Date : 2024-09-13 DOI:10.1016/j.cocis.2024.101858
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引用次数: 0

摘要

锂离子电池广泛应用于现代社会,研发活动旨在进一步提高电池性能。这些设备中的负极浆料通常包括作为活性材料的石墨和作为粘合剂的丁苯橡胶,以及水中的羧甲基纤维素(CMC)。尽管迄今为止已做了大量努力,但关于 CMC 的作用仍未达成一致意见。本微型综述根据先前的研究成果总结了 CMC 的作用。之前的研究结果表明,在中等浓度下,CMC 可用作分散剂,但在高浓度下可用作增稠剂。我们的实验结果表明,立体和静电排斥效应在阳极泥浆中起着至关重要的作用。此外,我们还发现,尽管使用相同的材料和相同的成分,制备过程也会极大地改变泥浆的流变特性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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The role of carboxymethyl cellulose on the rheology of anode slurries in lithium-ion batteries
Lithium-ion batteries are widely used in modern society, and research and development activities with the aim of further improving battery performance. The anode slurries in these devices typically include graphite as an active material and styrene-butadiene rubber as a binder, together with carboxymethyl cellulose (CMC) in water. Despite much effort to date, there is no agreement regarding the role of CMC. This mini-review summarizes the function of CMC based on prior research findings. The results of previous studies indicate that, at moderate concentrations, CMC can act as a dispersant but can serve as a thickener at high concentrations. Our experimental results suggest that steric and electrostatic repulsion effects play a crucial role in anode slurries. Also, we show that the preparation processes can drastically change the rheological properties of the slurries despite the same materials and the same composition being used.
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来源期刊
CiteScore
16.50
自引率
1.10%
发文量
74
审稿时长
11.3 weeks
期刊介绍: Current Opinion in Colloid and Interface Science (COCIS) is an international journal that focuses on the molecular and nanoscopic aspects of colloidal systems and interfaces in various scientific and technological fields. These include materials science, biologically-relevant systems, energy and environmental technologies, and industrial applications. Unlike primary journals, COCIS primarily serves as a guide for researchers, helping them navigate through the vast landscape of recently published literature. It critically analyzes the state of the art, identifies bottlenecks and unsolved issues, and proposes future developments. Moreover, COCIS emphasizes certain areas and papers that are considered particularly interesting and significant by the Editors and Section Editors. Its goal is to provide valuable insights and updates to the research community in these specialized areas.
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