Typical applications
This test cell can be used for experiments with both a 2-electrode and a 3-electrode configuration. Typical applications are:
Determination of the separator’s MacMullin number
Determination of the active material’s tortuosity
Determination of the temperature-dependent conductivity of polymer electrolytes or sputter-coated ceramic electrolyte pellets
Supercap and battery cycling
Selected views and impressions
Detailed Description
The test cell TSC Battery consists of several high-quality building blocks: The nickel-plated base unit (= “thermo block”) comes with an integrated Pt100 temperature sensor to monitor the temperature very close to the sample. It is followed by a pair of current collector electrodes made of stainless steel 1.4404 press-fitted in PEEK-sleeves with outer O-rings. There are two different types of current collector electrodes available: flat current collector electrodes, or current collector electrodes with a punching edge made of PEEK to punch out metallic lithium or sodium from a foil.
To seal the test cell, a housing made of polyether ether ketone (PEEK) with two O-ring grooves is used which connects the base unit and the cap. In the housing, there are two lateral ports for fittings which can be used to insert capillaries or metal wires serving as reference electrode.
The sample stack pressure can be adjusted very precisely with a gold-plated spring which is contacted by a spring contact in the cap via a gold-plated compression screw.
The loaded cell is sealed from the outside by a PEEK housing with several O-rings. Thus, sensitive materials are protected from the influence of oxygen or humidity.
Technical Details
- Sensor:
integrated Pt100 temperature sensor
- Maximum diameter for round-shaped samples:
12.0 mm; maximum side length for rectangular samples: 8.4 mm
- Setup for planar substrates:
ideally, samples are disc-shaped and dimensionally stable when being set under slight pressure
- Test cell materials:
nickel-plated copper (thermo block), stainless steel 1.4404 (current collector electrodes), PEEK (housing, cap, plug, and fittings), EPDM (default material for O-rings; other materials like FKM and FFKM are available on demand), gold-plated steel (pressure spring, compression screw)
- Sensor:
integrated Pt100 temperature sensor (thermo block)
- Stack pressure:
Two springs are part of the scope of delivery:
spring rate 2.4 N/mm (pmin = approx. 0.3 bar, pmax = approx. 1 bar)
spring rate 32.6 N/m (pmin = approx. 1 bar, pmax = 11.5 bar)
- Temperature range (operation)
-40 °C to +100 °C depending on sample amount and dew point
- Temperature range (storage):
+10 °C to +30 °C
- Required accessory to make electrical connection:
Microcell HC Setup, Microcell Passive, or customized cable set
- Extra:
100 Ohm chip-type test resistor to validate test cell
Key Data
- Art. No.:
840214_s (two lateral ports, two flat current collector electrodes only)
840214_e (two lateral ports, two flat and two punching-edge current collector electrodes)
840220_s (no lateral ports, two flat current collector electrodes only)
840220_e (no lateral ports, two flat and two punching edge current collector electrodes)
- Material in contact with sample:
stainless steel 1.4404, PEEK, O-ring material (default material = EPDM)
- Maximum diameter for round-shaped samples
12.0 mm; maximum side length for rectangular samples: 8.4 mm
