SA2634-KIT Slurry Analytical System

he SA2634-KIT Slurry Analysis System is a software-based solution that quantifies the electrical characteristics of slurry mixtures for lithium-ion batteries (LiB) using impedance analysis. The KIT includes the SA2634 analysis software, the IM3536 LCR Meter, the SA9002 test fixture, and one pack each of disposable sample containers SA9001 (for NMP-based slurries) and SA9001-01 (for aqueous slurries). By combining these components, the system enables standardized and repeatable evaluation of slurry conductivity and dispersion across a wide frequency range from 4 Hz to 8 MHz.

Measurement and Analysis Principle

Using electrochemical impedance spectroscopy (EIS), the IM3536 measures the impedance spectrum of the slurry. The SA2634 software models this data using an equivalent circuit and extracts three proprietary parameters:

• DCR — the total resistance of the conductive path
• R-ratio — the relative contribution of conductive additives within that path
• Uniformity — the evenness of the conductive network distribution

Together, these metrics provide a quantitative view of how well conductive additives are dispersed and interconnected within the slurry. They help determine the optimal ratio between the active material and the conductive agent, assess dispersion homogeneity, and correlate electrical behavior with electrode performance.

Measurement Process and Practical Application

For each measurement, approximately 1 ml of slurry is dispensed into a disposable sample container. The SA9001 container is used for N-Methyl-2-Pyrrolidone (NMP)–based slurries, while the SA9001-01 is intended for aqueous (water-based) slurries. The filled container is placed into the SA9002 test fixture, which was developed specifically for this measurement system and ensures a stable electrical connection to the IM3536 LCR Meter. Once secured, the system performs an impedance sweep across a user-defined frequency range from 4 Hz to 8 MHz. Each measurement takes about one minute, minimizing changes in slurry conditions during testing.

By combining automated equivalent-circuit fitting with batch processing of up to 1,000 datasets, the SA2634 software significantly streamlines data handling and sample comparison. Over time, it builds traceable reference values for long-term process control and quality assurance, enabling consistent evaluation in both R&D and production. The SA2634 system establishes a standardized, quantitative framework for early-stage formulation studies, process optimization, and quality control — helping maintain uniform electrode conductivity and reproducibility from lab scale to mass production.