电池电极浆料的粘度分析

Viscosity Analysis of Battery Electrode Slurry.

作者信息

Cushing Alex, Zheng Tianyue, Higa Kenneth, Liu Gao

机构信息

Energy Storage and Distributed Resources Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.

Materials Engineering, California Polytechnic State University, San Luis Obispo, CA 93410, USA.

出版信息

Polymers (Basel). 2021 Nov 21;13(22):4033. doi: 10.3390/polym13224033.

DOI:10.3390/polym13224033

PMID:34833332

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8623788/

Abstract

We report the effects of component ratios and mixing time on electrode slurry viscosity. Three component quantities were varied: active material (graphite), conductive material (carbon black), and polymer binder (carboxymethyl cellulose, CMC). The slurries demonstrated shear-thinning behavior, and suspension properties stabilized after a relatively short mixing duration. However, micrographs of the slurries suggested their internal structures did not stabilize after the same mixing time. Increasing the content of polymer binder CMC caused the greatest viscosity increase compared to that of carbon black and graphite.

摘要

我们报告了组分比例和混合时间对电极浆料粘度的影响。改变了三种组分的量：活性材料（石墨）、导电材料（炭黑）和聚合物粘合剂（羧甲基纤维素，CMC）。浆料表现出剪切变稀行为，并且在相对较短的混合时间后悬浮性能稳定。然而，浆料的显微照片表明，在相同的混合时间后其内部结构并未稳定。与炭黑和石墨相比，增加聚合物粘合剂CMC的含量导致粘度增加最大。