The present work studied the rheological properties of concentrated non-colloidal aqueous suspensions of graphite particles together with carboxymethyl cellulose (CMC) having various molecular weights, especially focusing on the applicability of the modified Cox-Merz rule. These suspensions were investigated as model slurries to produce anode electrodes of lithium ion batteries. In the case of suspensions containing high molecular weight CMC, the complex viscosity resulting from the measurements of frequency dependence of the viscoelastic moduli at high strain values was in good agreement with the steady state viscosity. That is, the data conformed to the modified Cox-Merz rule. However, the data obtained from suspensions containing low molecular weight CMC did not agree with the modified Cox-Merz rule. The difference in the applicability of this model is considered to be attributed to variations in the ability of the suspensions to recover to a stable state during the application of cyclic strain.

本工作研究了浓缩石墨颗粒的非胶体水悬浮液以及具有各种分子量的羧甲基纤维素（CMC）的流变特性，特别是研究了改进的Cox-Merz法则的适用性。研究了这些悬浮液作为模型浆料，以生产锂离子电池的阳极。在含有高分子量CMC的悬浮液的情况下，由粘弹性模量在高应变值下的频率依赖性的测量结果得出的复数粘度与稳态粘度很好地吻合。也就是说，数据符合修改后的Cox-Merz规则。但是，从包含低分子量CMC的悬浮液获得的数据与修改后的Cox-Merz规则不一致。