The effect of solid content on the rheological properties and microstructures of a Li-ion battery cathode slurry,RSC Advances

当前位置： X-MOL 学术 › RSC Adv. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

The effect of solid content on the rheological properties and microstructures of a Li-ion battery cathode slurry
RSC Advances ( IF 3.9 ) Pub Date : 2020-5-20 , DOI: 10.1039/d0ra02651d
Lixia Ouyang _{1,

2,

3} , Zhaohui Wu ₂ , Jun Wang ₄ , Xiaopeng Qi ₂ , Qiang Li _{1,

2,

3} , Jiantao Wang _{1,

2,

3} , Shigang Lu _{1,

2,

3}

Affiliation

The development of new materials and the understanding of the microstructure formation of electrodes have become increasingly important for improving Li-ion battery performance. In this study, we investigate the effect of solid content on the rheological properties of and the microstructures in the cathode slurry prepared from Ni-rich materials. With long-chain structures, PVDF molecules can change their configurations when they come into contact with the solid particles in slurries, and their bridging function can change with the solid content in the slurry. Below the optimum content, particle sedimentation easily takes place. Above the optimum content, excessive yield stress is created in the slurry, and this stress is not conducive to homogeneous distribution of the components. The rheological properties of the slurries vary greatly under different solid contents. We investigated the uniformity and stability of the slurry prepared from Ni-rich materials and found that the most suitable solid content of the slurry lies in the range from 63.9% to 66.3%. Our work might assist in the production of high-performance Li-ion batteries that are made using an electrode slurry.

中文翻译：

固含量对锂离子电池正极浆料流变性能和微观结构的影响

新材料的开发和对电极微观结构形成的理解对于提高锂离子电池性能变得越来越重要。在这项研究中，我们研究了固体含量对由富镍材料制备的正极浆料的流变性能和微观结构的影响。由于具有长链结构，PVDF分子在与浆料中的固体颗粒接触时会改变其构型，其架桥功能会随着浆料中的固体含量而改变。在最佳含量以下，容易发生颗粒沉降。超过最佳含量，在浆料中产生过大的屈服应力，这种应力不利于组分的均匀分布。在不同的固含量下，浆料的流变性能差异很大。我们研究了由富镍材料制备的浆料的均匀性和稳定性，发现最合适的浆料固含量在 63.9% 至 66.3% 的范围内。我们的工作可能有助于生产使用电极浆料制成的高性能锂离子电池。

更新日期：2020-05-20

点击分享查看原文

点击收藏

公开下载

阅读更多本刊新发论文本刊介绍/投稿指南