Details

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HIOKI POWDER IMPEDANCE MEASUREMENT SYSTEM ( SA2653, SA2654, SA9003, SA9004-01 and SA9005)

All-in-one Solution for Powder Material Evaluation of Solid-state Batteries & Dry Processes in a Glove Box Environment


Hioki's Powder Impedance Measurement System is equipped with a compact-designed compressing mechanism and thickness measurement mechanism in addition to highly accurate electrical measurement capabilities. The system's compact design allows the press unit to be installed in a low dew-point environment, such as a glove box, so measurements can be safely performed without concerns for a risk of hydrogen sulfide gas leakage and material alteration.
 

Key Features

• • Simultaneously measure impedance, thickness, and pressure
  • Accurate analysis: calculate bulk density and ionic conductivity with precision
  • All-in-one glove box operation: from loading to pressing & measurement, all tasks completed safely inside
  • Enhanced safety: prevents hydrogen sulfide gas leakage & preserves material integrity
  • Time-saving efficiency: no sample removal required—streamline the entire process
  • Optimized testing: measure multiple conditions on a single sample continuously

Model No. (Order Code)

SA2653	Measurement Software: for obtaining data, Viewer
SA2654	Sensor Unit: for displaying pressure and displacement
SA9003	Press Unit: for measuring pressure and thickness
SA9004-01	Test Fixture: for powder filling
SA9005	Mold Release Unit: to remove the powder

An optional measuring instrument and connection cable must be combined with the system to perform measurements. Please purchase the optional measuring instruments and connection cables separately according to your purpose of measurement.

System configuration

Proper evaluation of the mechanical and electrical properties of powder materials

To properly evaluate the mechanical and electrical properties of powder materials, all mechanisms and software are designed in-house at Hioki.
- Measurement software that integrates the measurement data
- Sensor unit that monitors pressure and displacement
- Compact press unit with a built-in pressing mechanism, load cell, and displacement gauge
- High-intensity test fixture for filling powder materials
- Mold release unit for removing the pressed powder

Depending on the measurement target, you can select either AC resistance measurement or DC resistance measurement supported instruments:
- Solid electrolytes -> AC resistance measurement
- Conductive auxiliaries -> DC resistance measurement

By combining three types of measuring instruments, the system covers a wide measurement frequency range of DC, 1 mHz to 5 MHz.

All-in-one glove box operation

The compact-size SA9003 Press Unit allows it to be installed inside the glove box. This enables the entire process, from material loading to powder pressing and measurement, all tasks to be completed safely inside the glove box. For dimensions, please refer to the specifications.

The length of the connection cable between the SA9003 Press Unit and the measuring instrument is 80 cm.
(30 cm between the measuring instrument and BNC flange, and 50 cm between the BNC flange and press unit)

Two USB cables (A-B type) are included as accessories with the system.

For more details, please contact your distributor.

Notes in the figure

• *1:Custom orders are available.
• *2:Please prepare it yourself or consult your distributor.

Measuring principle

How the measurement works

The impedance measurement method of this system is the 2-terminal method.
AC impedance measurements are conducted between electrodes with a diameter of 10 mm, placed above and below the powder.
Since the electrode is also subjected to high-pressure, they are made of a high-intensity cemented carbide, which is also used in powder molding.

Graphing capabilities

Visualize results with built-in graphing functions for in-depth analysis

The dedicated software includes both measurement function and Viewer function.
Therefore, you can instantly compare data between samples once the measurement is complete.

STEP 1: Simultaneously acquire impedance, thickness, and pressure data.
STEP 2: Calculate the overall resistance from the measured impedance data. Based on the overall resistance, ionic conductivity, conductivity, and volume resistivity are calculated.
STEP 3: Using the Viewer function, you can create graphs for any selected parameters and compare data between samples.

X-axis	Load (kN), pressure (MPa), bulk density (g/cm3), filling factor (%) *3, porosity (%) *3
Y-axis	Impedance (Ω), volume resistivity (Ωcm), conductivity (s/cm), ionic conductivity (s/cm), relative permittivity (F/m) *4, bulk density (g/cm3), thickness (mm), filling factor (%) *3, porosity (%) *3

• *3:Only when the true density is entered.
• *4:Only for specific frequency measured in AC Continuous mode.

Automatic calculations: Easily calculate overall resistance (R) with Nyquist plot fitting

The maximum and minimum X (Ω) values are automatically extracted from the arcs of the Nyquist plot.
Circle fitting is performed on the data between the extracted maximum and minimum values, and the intersection with the X-axis is used to determine the overall resistance value R.

Basic specification

Frequency at which measurements can be made	DC to 5 MHz (Three types of measuring instruments used)
Load application method	Manual operation (constant control of load is not possible)
Load range (compressing range)	0 to 60 kN (0 to 764 MPa, when using the SA9004-01 Test Fixture electrode φ10 mm)
Load measurement accuracy	±3% f.s.
Thickness measurement error	±10 µm (under a constant temperature environment, after calibration is performed) (within a load range of 10 kN to 60 kN, only with increasing load)
Electrode size	φ10 mm (SA9004-01)
Powder filling section size	φ10 mm, depth: 7 mm
Operating temperature and humidity range	23°C ±5°C (73°F ±9°F), 80% RH or less (non-condensing)
Rated supply voltage	100 V to 240 V AC (SA2654, IM3570, IM3533, RM3545A)
Dimensions and weight	Dimensions: see Fig. 1 Weight: SA9003 approx. 20.7 kg (45.6 lb.), SA2654 approx. 2.3 kg (5.1 lb.)

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  Fig.1 Unit: mm