Electrochemical Measurement Solutions

The IM3590 Chemical Impedance Analyzer is designed for precise measurement of electrochemical components and materials, including batteries and electric double-layer capacitors (EDLCs).

Electrode Resistance Measurement System, isolates and quantifies the composite layer resistivity and the interface resistance between the composite layer and the aluminum or copper current collector foil of LIB electrode sheets in a single measurement

Key Specifications Slurry conductivity and dispersion evaluation (DCR, R-ratio, Uniformity)Automated equivalent-circuit fitting For aqueous and NMP based slurries Impedance data from 4 Hz to 8 MHz Unique AdvantagesCombines frequency-sweep EIS with automated equivalent-circuit fitting for quantitative slurry evaluationProvides three proprietary metrics (DCR, R-ratio, and Uniformity) for consistent assessment of conductivity and dispersion Typical ApplicationsOptimization of slurry manufacturing conditions (e.g. mixing time, conductive agent content, dispersant ratio) in R&D and production Material research and evaluation using electrical dispersion analysis and comparative conductivity metricsQuality assurance and performance screening of lithium-ion battery slurries in production environments Product Description 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. Measurement and Analysis PrincipleUsing 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: DCR, representing the total resistance of the conductive path; R-ratio, indicating the relative contribution of conductive additives within that path; and Uniformity, reflecting the evenness of the conductive network distribution. 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 the homogeneity of dispersion, and directly link electrical behavior to electrode performance.Measurement Process and Practical ApplicationFor 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 intended for aqueous (water-based) slurries. The filled sample holder is placed into the SA9002 Test Fixture, a fixture developed specifically for this measurement system, 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 state 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 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 lab scale to mass production.

Detailed Product OverviewThe SA9001 is used together with the SA9002 Test Fixture as part of HIOKI’s SA2634-KIT Slurry Analysis System. Each pack contains 50 slurry sample containers (also referred to as electrode cells) for impedance measurement of N-Methyl-2-Pyrrolidone (NMP)-based lithiumion battery slurries. The nickel-plated electrode surfaces provide durable, low-resistance contact optimized for impedance analysis of NMP-based slurries. NMP-based slurries are mainly used in the development and production of cathode materials such as Nickel-Cobalt-Manganese (NCM) and Nickel-Cobalt-Aluminum (NCA). The performance of these electrodes strongly depends on the homogeneous dispersion of conductive additives within the slurry. Because NMP effectively dissolves binder materials, it enables uniform dispersion and coating, making impedance characterization a key tool for process optimization. Each container holds approximately 1 ml of slurry and is intended for single use to avoid cross-contamination between measurements. When mounted in the SA9002 Test Fixture, it defines the electrode geometry and ensures consistent contact conditions for reproducible impedance measurements. Although part of the SA2634-KIT Slurry Analysis System, the SA9001 sample containers can also be purchased separately or used independently with other HIOKI LCR Meters and impedance analyzers in combination with the SA9002 Test Fixture. The containers are optimized for slurry materials; use with other conductive pastes may lead to different contact characteristics and is not covered by HIOKI specifications.

Detailed Product OverviewThe SA9001-01 is used together with the SA9002 Test Fixture as part of HIOKI’s SA2634- KIT Slurry Analysis System. Each pack contains 50 slurry sample containers (also referred to as electrode cells) for impedance measurement of aqueous (water-based) lithium-ion battery slurries. The gold-plated electrode surfaces provide corrosion-resistant, low-resistance contact optimized for impedance analysis of aqueous slurries. Aqueous slurries are primarily used in the development and production of anode materials such as graphite or silicon-based composites. Since these systems use water as a solvent instead of N-Methyl-2-Pyrrolidone (NMP), they are environmentally safer and require electrodes that maintain stable electrical properties even in the presence of moisture. Gold plating prevents oxidation and ensures consistent measurement results over repeated use in wet environments. Each container holds approximately 1 ml of slurry and is intended for single use to avoid cross-contamination between measurements. When mounted in the SA9002 Test Fixture, it defines the electrode geometry and ensures consistent contact conditions for reproducible impedance measurements. Although part of the SA2634-KIT Slurry Analysis System, the SA9001-01 sample containers can also be purchased separately or used independently with other HIOKI LCR Meters and impedance analyzers in combination with the SA9002 Test Fixture. The containers are optimized for slurry materials; use with other conductive pastes may lead to different contact characteristics and is not covered by HIOKI specifications.

Detailed Product OverviewThe SA9002 Test Fixture is an integral component of HIOKI’s SA2634-KIT Slurry Analysis System. It connects to the IM3536 LCR Meter via four BNC terminals and provides secure mounting for the disposable Slurry Sample Containers (SA9001 or SA9001-01) containing the slurry sample.Although part of the SA2634-KIT Slurry Analysis System, the SA9002 can also be purchased separately as a replacement fixture or used independently with other HIOKI LCR Meters, the IM3570 Impedance Analyzer or the IM3590 Chemical Impedance Analyzer in combination with the disposable sample containers. This enables users to build customized measurement setups tailored to their specific evaluation requirements. The SA9002 Test Fixture and the associated sample containers are optimized for use with slurry materials. The nickel- or gold-plated electrode surfaces of the containers ensure stable contact and reproducible impedance results under defined slurry conditions. Use with other pastes or conductive materials may result in different contact characteristics and is not covered by HIOKI specifications.