Battery Material Tester
Automatic Lithium Battery Electrode Sheet Resistance Tester and Electrical Conductivity Meter
Item Number : DS18
Price varies based on specs and customizations
- Resistance Measurement Range
- 10^-7 to 2×10^7 Ω (Resolution: 0.1 µΩ)
- Applied Pressure Range
- 0 to 200 kg (Automatic Motorized Control)
- Sample Thickness Accuracy
- 0 to 10 mm range, 0.001 mm (1 µm) accuracy
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Product Overview
This system is a specialized, high-precision electrical characterization apparatus engineered to measure the total through-plane resistance, volume resistivity, and electrical conductivity of battery electrodes under controlled mechanical compression. Operating via a precision two-probe planar electrode configuration, the equipment quantifies the composite electrical dynamics across the entire electrode architecture—including probe-to-coating contact resistance, active material coating resistance, coating-to-current collector interface resistance, and bulk substrate resistance. By automating pressure application and linking mechanical stress directly to electrical transport properties, this instrument delivers essential insights for optimizing electrode formulation, calendering processes, and electrochemical performance.
Designed for lithium-ion battery research facilities, quality assurance laboratories, and high-throughput cell manufacturing environments, the equipment accommodates diverse electrode sheet samples, current collectors, and conductive films. Automated pressure control eliminates human operational variance, ensuring repeatable measurements across broad research and industrial quality control matrices. With a high-resolution displacement transducer, the system continuously logs real-time sample thickness and compaction dynamics under varying load profiles.
Engineered for exceptional long-term reliability in demanding testing cycles, this testing apparatus integrates comprehensive hardware and software safeguards, including over-pressure protection, travel-limit cutoffs, and emergency stop mechanisms. The included PC software suite provides end-to-end data acquisition, real-time plotting of pressure-resistance-conductivity curves, compacted density calculations, and automated report generation, establishing a solid standard for scientific verification and industrial process control.
Key Features
- Automated Precision Compression Control: Built-in electric servo loading mechanism delivers programmable pressure from 0 to 200 kg, eliminating manual operator inconsistency and enabling systematic pressure-versus-resistivity correlation mapping.
- Direct Through-Plane Two-Probe Method: Accurately isolates and measures the cumulative resistance profile across the entire electrode stack, capturing probe contact resistance, active material resistance, and current collector interfacial dynamics.
- Ultra-Wide Measurement Spectrum: Covers extensive electrical resistance ranges from $10^{-7},\Omega$ to $2\times 10^7,\Omega$ and resistivity ranges from $10^{-7},\Omega\cdot\text{cm}$ to $2\times 10^7,\Omega\cdot\text{cm}$ with testing currents ranging from $1,\mu\text{A}$ to $1000,\text{mA}$.
- Superior Metrology Resolution and Accuracy: Delivers electrical measurement accuracy within $\le 0.3%$ against standard reference resistances with a resolution down to $0.1,\mu\Omega$, ensuring dependable characterization of ultra-conductive and resistive coatings alike.
- Micron-Scale Integrated Thickness Gauging: Features an in-situ displacement sensing system with $0.001,\text{mm}$ thickness accuracy across a $0\text{--}10,\text{mm}$ sample range, simultaneously monitoring compaction density and film compression.
- High-Purity Copper Planar Electrodes: Standardized $10,\text{mm}$ diameter flat copper probe provides uniform current distribution across sample surfaces, with custom probe geometries and dimensions available for specialized research requirements.
- Advanced Real-Time PC Analytics Suite: Dedicated software platform automatically calculates resistance, resistivity, conductivity, temperature, pressure, compacted density, and cross-sectional area, generating interactive curve plots and standardized exportable reports.
- Multi-Tier Safety and Maintenance Architecture: Comprehensive hardware interlocks, over-travel limit sensors, pressure threshold alarms, operational error prompts, and automated maintenance reminders protect both the user and delicate instrumentation.
Applications
| Application | Description | Key Benefit |
|---|---|---|
| Cathode & Anode Slurry Formulation R&D | Evaluates conductive agent distribution, binder concentration, and active material ratios by measuring the sheet electrical resistivity under varying simulated calendering pressures. | Identifies optimal conductive network percolation thresholds to maximize active material utilization and minimize internal cell impedance. |
| Calendering & Compaction Process Optimization | Measures through-plane conductivity and thickness compaction curves across various rolling press loads ($0\text{--}200,\text{kg}$). | Determines optimal electrode density to balance electronic conductivity against electrolyte wetting and ion diffusion channels without over-compacting. |
| Current Collector Surface Treatment Verification | Analyzes the interfacial contact resistance between active electrode coatings and modified metal substrates (such as carbon-coated aluminum or copper foils). | Validates interfacial adhesion and contact impedance reductions, preventing delamination and capacity fading during rapid cycling. |
| High-Rate Cell Performance Screening | Screens candidate electrodes for fast-charging and high-power applications where through-plane electronic transport resistance dominates internal heat generation. | Guarantees batch-to-batch electrical uniformity, mitigating hot spots and uneven state-of-charge distributions across large-format pouch or prismatic cells. |
| Dry Battery Electrode (DBE) Process Characterization | Tests solvent-free dry-processed electrode films for binder fibrillization quality and structural conductive pathway continuity under mechanical stress. | Provides rapid, non-destructive feedback on dry mixing homogeneity and hot-lamination efficacy before cell assembly. |
| Solid-State Battery Composite Layer Evaluation | Characterizes composite solid electrolyte-electrode blends and solid electrolyte interphase (SEI) contact layers under variable compression. | Ensures uninterrupted electronic and ionic conduction pathways while verifying structural integrity under stack pressures. |
| Manufacturing Batch Quality Control & Incoming QA | Standardized benchtop testing of incoming raw electrode rolls and finished coated coils prior to slitting and winding operations. | Rapidly flags coating thickness variations, binder migration defects, and non-uniform conductive network issues, reducing final cell scrap rates. |
Technical Specifications
| Parameter Category | Specification Details (Model: DS18) |
|---|---|
| Model Designation | DS18 |
| Measurement Method | Two-probe planar electrode method (through-plane electrical characterization) |
| Resistance Range | $10^{-7},\Omega \sim 2\times 10^7,\Omega$ |
| Resistivity Range | $10^{-7},\Omega\cdot\text{cm} \sim 2\times 10^7,\Omega\cdot\text{cm}$ |
| Conductivity Range | $5\times 10^{-7},\text{S/cm} \sim 10^7,\text{S/cm}$ |
| Selectable Test Currents | $1,\mu\text{A}$, $10,\mu\text{A}$, $100,\mu\text{A}$, $1,\text{mA}$, $10,\text{mA}$, $1000,\text{mA}$ |
| Resistance Accuracy | $\le 0.3%$ (Standard Resistance) |
| Resistance Resolution | $0.1,\mu\Omega$ |
| Applied Pressure Range | $0 \sim 200,\text{kg}$ (programmable closed-loop control) |
| Pressure Loading Mechanism | Fully automatic motor-driven compression with target-set automatic execution |
| Planar Probe Electrode Material | High-conductivity copper (standard diameter: $\varnothing 10,\text{mm}$; custom sizes available) |
| Test Stroke Range | $0 \sim 20,\text{mm}$ |
| Displacement Measurement Accuracy | $0.01,\text{mm}$ |
| Sample Thickness Range | $0 \sim 10,\text{mm}$ |
| Sample Thickness Accuracy | $0.001,\text{mm}$ ($1,\mu\text{m}$) |
| Software Interface Functions | Direct display of resistance, resistivity, conductivity, temperature, pressure, cross-sectional area, height/thickness, compacted density, real-time correlation curves, and automated test report generation |
| System Safety & Protection | Stroke limit protection, maximum pressure overload protection, emergency stop button, operator error prevention, and abnormal condition audible/visual alarms |
| Operation & Maintenance Guidance | Integrated safety compliance operational indicators and automated maintenance/calibration prompt notifications |
| Input Power Supply | $\text{AC } 220,\text{V} \pm 10%,, 50,\text{Hz}$ |
| Total Power Consumption | $< 100,\text{W}$ |
Why Choose This Product
- Integrated Pressure-Resistance Metrology: Unlike conventional static resistivity meters, this system dynamically couples motorized mechanical compression ($0\text{--}200,\text{kg}$) with micron-level thickness tracking, allowing engineers to reconstruct real-world calendering and in-cell stack pressure conditions accurately.
- Uncompromising Electrical Sensitivity: Featuring high-resolution $0.1,\mu\Omega$ metrology and multi-decade current ranges, the instrument detects subtle variations in conductive carbon network formation, binder segregation, and current collector surface preparation that standard ohmmeters miss.
- Robust Industrial Build & Safety Interlocks: Built with rigid structural mechanics, precision copper planar probes, and comprehensive hardware safeguards, the equipment ensures reproducible, drift-free measurements across thousands of consecutive production testing cycles.
- Comprehensive Analytical Workflow: The integrated PC software eliminates manual conversion steps by instantly transforming raw voltage and current signals into resistivity, electrical conductivity, and compaction density graphs, with automated reporting for immediate QA sign-off.
- Tailored Engineering & Expert Support: Backed by specialized battery manufacturing instrumentation expertise, each system can be customized with tailored probe geometries, specialized fixture designs, and dedicated technical support to match specific research and line-testing requirements.
Contact our technical engineering team today to request a detailed quotation, discuss custom probe options, or schedule a technical demonstration for your laboratory.
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