Test System Solutions
IEST Powder Resistivity & Compaction Density Measurement System (PRCD3100)
Powder Compaction Density & Powder Resistivity Measurement System combined with high-precision pressure control, thickness and resistance testing system, free choice of four-probe and two-probe method. Accurately powder resistivity tests and compaction density measurements for materials R&D and for monitoring batch-to-batch stability of battery powder materials.
- High-Nickel Cathode Materials
- Lithium-rich Materials
- Silicon-based Anode Materials
- Anode Materials & Conductive Agents
- Elastic Modulus: LCO
- Carbon Material Compression
Introduction
Accurate evaluation of electronic resistance in battery materials and electrodes is critical for predicting final cell internal resistance. The PRCD3100 enables direct powder resistivity measurement and compaction density testing under controlled pressure — at conditions that reflect actual electrode manufacturing, not just tapped density. This closes the gap between material characterization and production-scale performance.
Testing Capabilities
- Powder resistivity under variable compaction pressure (up to 350 MPa)
- Compaction density at production-relevant pressures
- Two-probe and four-probe resistance measurement modes, freely switchable
- Real-time parameter curves: pressure, thickness, resistance, resistivity, conductivity
- Batch-to-batch stability monitoring for incoming material QC
Why Compaction Density Matters
When testing powder conductivity, the compaction density should reflect the actual electrode compaction — not tapped density. Using LCO as an example: below 3.87 g/cm³ (pressure <75 MPa), a modified powder sample is less conductive than unmodified. Above 3.87 g/cm³, it outperforms — and the gap grows with pressure. Testing at the wrong pressure produces the wrong conclusion.
System Design
- Servo-motor driven pressure system, up to 350 MPa
- High-precision displacement sensor for real-time thickness measurement
- Purpose-built clamp simplifies powder loading and cleaning
- One-stop data collection: pressure, resistance, thickness, temperature, humidity
- Integrated control and measurement — no external instruments required
- Automatic report generation with resistivity and compaction density values
