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Slurry Analysis System for LiB Conductivity Evaluation
Software-based slurry analysis system for lithium-ion batteries, evaluates slurry conductivity and dispersion through DCR, R-ratio and Uniformity; impedance measurements 4 Hz to 8 MHz, for aqueous and NMP-based slurries.
The SA2634-KIT Slurry Analysis System is a software-based solution that quantifies the electrical characteristics of lithium-ion battery (LiB) slurries through impedance analysis. The kit includes the SA2634 Analysis Software, the IM3536 LCR Meter, the SA9002 Test Fixture, and one pack each of disposable slurry 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.
Using electrochemical impedance spectroscopy (EIS), the IM3536 acquires the impedance spectrum of the slurry. The SA2634 software models this data with an equivalent circuit to extract three proprietary parameters:
Together, these metrics provide a quantitative understanding of how well conductive additives are dispersed and connected within the slurry. They help engineers identify the optimal ratio between active material and conductive agent, assess dispersion homogeneity, and directly link electrical behavior to electrode performance.
For each measurement, approximately 1 ml of slurry is dispensed into a disposable sample holder. The SA9001 Slurry Sample Container is used for N-Methyl-2-Pyrrolidone (NMP)-based slurries, while the SA9001-01 is designed for aqueous (water-based) slurries. The filled sample holder is placed into the SA9002 Test Fixture, where it establishes a stable electrical connection to the IM3536 LCR Meter.
Once secured, the system performs an impedance sweep across a user-defined frequency range between 4 Hz and 8 MHz. Each measurement takes approximately one minute, minimizing changes in the slurry’s condition 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 comparison between multiple samples. Over time, accumulated measurement data provide traceable reference values for long-term process control and quality assurance, enabling consistent evaluation across both R&D and production environments.
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 laboratory scale to mass production.
