- Stack voltage up to 1000 V
- Stack current up to 2000 A
- Inner dissipated power of StackEIS up 20 kW
- EIS measurement one cell gradually or all cells simultaneously
- High precision current sensing of both DC and AC components
// Kolibrik Potentiostats line
MegaEIS
Modular multichannel platform
Modular
Features
- Stack voltage up to 1000 V
- Stack current up to 2000 A
- Inner dissipated power of StackEIS up 20 kW
- EIS measurement one cell gradually or all cells simultaneously
- High precision current sensing of both DC and AC components
What it does
- Stack voltage to 1000 V and stack current to 2000 A
- Up to 1000 EIS channels, eight per module
- Measures one cell at a time or every cell simultaneously
- 20 kW internal load dissipation, water cooled
- Built-in EIS from 1 mHz to 100 kHz per channel
- Modular 19-inch rack build with Ethernet and USB control
For applications including
2000 A
Maximum current
Total, internal plus external load
1000 V
Stack voltage
Stack electrometer range
100 kHz
EIS upper limit
From 1 mHz, per channel
20 kW
Load dissipation
Internal load, water cooled
1000
EIS channels
8 per module, limited by max voltage
// System highlights
EIS capability
Maximum Solution Details
For fuel cell stacks, electrolyzers, Simultaneous multi-channel EIS Acquisition
// Overview
Kolibrik High-power EIS Analysis System
Up to 1000 V | 2000 A | 20/250 kW | 1000 EIS channels
MegaEIS product family is a modular testing system for EIS analysis of H2FC stacks. System is designed for cooperation with external DC load which handles most of the stack power. System also provides continuous cell voltage monitoring feature, even during EIS acquisition
Applications
Typical applications include hydrogen fuel cells, water electrolyzers, solid-oxide cells, redox-flow batteries, and lithium batteries with high-current and high-power requirements. Additionally, EIS is utilized in applied research, manufacturing testing, and quality control.
Description
StackEIS-M product family is a precise modular testing system for EIS analysis of fuel-cell stacks
and electrolyzers. System consists of power stage which handles the power, and EIS acquisition
system which can perform impedance spectroscopy analysis at all cells simultaneously.
For fuel-cell stacks, power stage is built from EIS load modules. Your stack can have up to 1 000
cells and provide current up to 2 kA. System is designed for cooperation with external DC load
which may handle most of the stack power (up to 300 kW).
Maximum internal power dissipation of StackEIS-M power s tem is water-
cooled.
For electrolyzers, power stage is extended by internal or external power supply, so the system works as regulated power source, capable of EIS measurement.
EIS acquisition runs simultaneously on all channels, so the system is suitable for rapid and precise analysis in R&D, for QA in manufacturing, or in service diagnostics. StackEIS-M also provides DC cell voltage monitoring and enables characteriza-tion using important electrochemical methods
– Polarization Curves, Chronopotentiometry and Chronoamperometry, Load Cycling, Current Interrupt Technique, etc.
Unlock Power with EIS Analysis
Electrochemical Impedance Spectroscopy (EIS) analysis is the ultimate technique to unlock the secrets of your electrochemical devices. Whether you are working with hydrogen fuel cells, electrolyzers, batteries, or any other system that involves electric current and chemical reactions,
EIS analysis can give you a complete picture of what’s going on inside your devices. A standout feature of the EIS method is its unique ability to analyze your device seamlessly, during its standard operating conditions.
// Specifications
The complete technical detail
System
| Power supply | 110..230 V AC / 50..60 Hz3x 400 VAC for high-power devices |
|---|---|
| Input Voltage | Up to 1000 V *) |
Electrometer & potential
| Stack electrometer voltage ranges | Up to ±1000 V |
|---|
Current
| Total input current (internal + external load) | Up to 2000 A *) |
|---|---|
| Internal load current | Up to 2000 A *) |
Acquisition
| Sampling | 24-bit ADCs, low-noise 50/60 Hzfiltered sampling for DC measurements24-bit ADCs, up to 1.25 Mspsfor EIS measurements |
|---|---|
| Measurement resolution | 0.001 % of selected range |
| Accuracy | Voltage ≤ 0.1% of range+ 0.1 % of readingCurrent ≤ 0.1% of range+ 0.5% of reading |
| Acquisition methods | constant V, I, open circuit, manual controlchronoamperometry, chronopotentiometrylinear sweeps, polarization curves, currentinterruption load cycling/profilingEIS – electrochemical impedancespectroscopy programmable sequencesof all available methods |
EIS measurement
| EIS frequency | 1 mHz .. 100 kHz |
|---|---|
| EIS amplitude | Up to 20% of maximum internal current for< 1 kHz |
| EIS channel voltage range | ±3 V (can be customized) |
| Number of EIS channels | Up to 1000 (limited by max. voltage)8 channels per one module |
Physical
| Dimensions | Modular design for 19“ rack cabinet |
|---|---|
| Protection rating | IP20 |
| Maximum internal load power dissipation | 20 kW *) |
| Cooling | Water |
Software & control
| Connection | USB 2.0, Ethernet |
|---|---|
| Software | Control software for MS WindowsFeatures: measurement setup and control, data acquisition, processing and visualization, pascal or python scripting, remote control by TCP/IP server for integration with top-level control system, examples for remote control using python or LabVIEW. |
// Resources
Documentation
Documentation