Electrode tortuosity tester & diaphragm ion conductivity tester

The Electrode Tortuosity Tester and Diaphragm Ion Conductivity Tester are precision systems designed for advanced analysis of battery electrodes and separators. The Electrode Tortuosity Tester evaluates 3D tortuosity pathways and microstructural connectivity in electrodes, while the Diaphragm Ion Conductivity Tester measures ionic conductivity of separators under controlled environmental conditions. These systems support R&D, quality control, and optimization of electrode and separator materials for lithium-ion, sodium-ion, and solid-state batteries.

Application

(1) Determination of tortuosity factor (τ) in dry electrodes, slurry-coated foils, and solid-state composites.

(2) 3D microstructural analysis for optimizing electrode porosity and ionic pathways.

(3) Ionic conductivity measurement of battery separators (ceramic, polymer, or hybrid materials).

(4) Evaluation of electrolyte diffusion through diaphragms under AC/DC bias.

(5) Quality control of electrode and separator batches in battery manufacturing.

(6) R&D of next-generation solid-state and high-energy-density battery systems.

(7) Integration with gloveboxes for oxygen/moisture-sensitive materials.

(8) Multi-scale imaging to correlate microstructure with electrochemical performance.

Standards

Electrode Tortuosity Analyzer:

(1) ASTM E1970-21 – Electrochemical Impedance Spectroscopy.

(2) ISO 18516 – Conductive Coatings – Resistivity Measurement.

Separator Ionic Conductivity Tester:

(3) IEC 62660-2 – Secondary Lithium-Ion Cells – Performance Testing.

(4) ASTM D5402 – Conductivity of Ionic Solutions.

Universal Compliance:

(5) RoHS, CE, and REACH certified.

Features

Electrode Tortuosity Analyzer

(1) 3D microstructure imaging with sub-micron resolution CT scanning.

(2) Automated tortuosity factor calculation (τ < 1.2 for optimal structures).

(3) Non-destructive optical tomography with rapid 60-second full-volume scan.

(4) Multi-material compatibility: dry electrodes, slurry-coated foils, solid-state composites.

(5) Laser-guided alignment for ±2 μm sample positioning accuracy.

(6) AI-powered analysis to identify critical 3D pathways.

(7) Multi-scale imaging: macro (cm-scale) and micro (μm-scale) views.

(8) Open architecture for integration with SEM/FIB datasets.

Separator Ionic Conductivity Tester

(1) Ultra-wide conductivity range: 0.01 mS/cm – 20 mS/cm.

(2) AC impedance spectroscopy up to 10 MHz.

(3) Programmable electrolyte injection with 0.1–100 μL precision.

(4) Self-sealing sample chamber for evaporation prevention.

(5) Temperature-controlled Peltier stage (-20°C to 80°C ±0.1°C).

(6) Non-contact graphene-coated electrodes to minimize polarization effects.

(7) Dielectric spectroscopy for ion mobility analysis under AC/DC bias.

(8) Auto-calibration with NIST-traceable standards.

(9) Hermetic design compatible with glovebox operation.

Parameters

Parameter	Electrode Tortuosity Analyzer	Separator Ionic Conductivity Tester
Measurement Range	τ = 1.01–5.00	0.01 mS/cm – 20 mS/cm
Accuracy	±2% (τ ≤ 3.00)	±0.5% of reading + 0.005 mS/cm
Resolution	0.01 μm (3D voxel)	1 nS/cm
Test Speed	60 sec/sample	120 sec/sample (including stabilization)
Temperature Range	20°C–200°C (optional upgrade)	-20°C–80°C
Interface	USB 3.2, GigE Vision	Ethernet, Wi-Fi 6, Bluetooth 5.3
Dimensions (W×D×H)	550 × 500 × 600 mm	400 × 350 × 250 mm
Weight	95 kg (net)	30 kg (net)

Accessories

(1) Electrode Tortuosity Analyzer: Sample holders, laser alignment kit, optical tomography module, software license.

(2) Separator Ionic Conductivity Tester: Electrolyte injection kit, NIST-traceable calibration standards, hermetic sample chamber, temperature control module, software suite.

(3) Optional glovebox interface modules for both systems.

(4) Data export and integration toolkit (CSV/PDF, LabVIEW, MATLAB, Python).

Test Procedures

(1) Prepare electrode or separator sample and mount it in the respective fixture.

(2) For tortuosity testing, perform 3D imaging scan and initiate automated tortuosity calculation.

(3) For ionic conductivity testing, inject electrolyte and stabilize temperature; measure AC/DC conductivity.

(4) Monitor test progress and record data via touchscreen interface or connected PC software.

(5) Analyze 3D microstructure, tortuosity factors, or conductivity curves for R&D, QC, or process optimization.

Maintenance Information

(1) Inspect sample holders, electrodes, and fixtures before each test for wear or contamination.

(2) Calibrate measurement systems periodically using NIST-traceable standards.

(3) Clean Peltier stage, optical lenses, and sample chamber to avoid residue accumulation.

(4) Check all electrical connections, interface cables, and safety interlocks before operation.

(5) Store instruments in clean, vibration-free, and dust-free conditions.

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