Typical applications
This test cell can be used for in-situ Raman spectro-electrochemical measurements in a 2- or 3‑electrode configuration.
- Investigation of the interface between battery electrode materials and electrolytes
- Study of corrosion processes at metal surfaces in contact with electrolyte solutions
- SERS experiments
- All types of light exposure and irradiation experiments
Selected views and impressions
Detailed Description
The measuring cell TSC Raman enables the simultaneous electrochemical and optical characterization of numerous substances solved in organic and inorganic media. As optical methods you can employ Raman spectroscopy, surface-enhanced Raman spectroscopy (SERS), the characterization of an illuminated sample or similar. Because the cell can be hermetically sealed by a housing made of PEEK, air-sensitive or volatile samples can be studied.
Like all measuring cells being part of our Microcell product portfolio, the measuring cell TSC Raman is compatible with all available cell stands. By default, TSC Raman is provided with a current collector electrode made of stainless steel pressed in PEEK (electrochemically active surface 8 mm in diameter). In principle, all materials which can be pressed into PEEK are available, like for instance platinum. If a thin film sample should be investigated, e.g. a thin film coated on a metal foild or free-standing electronically-conductive films, the sample needs to be prepared as round-shaped specimen with an outer-diameter of max. 12.0 mm. The sample is in that case placed on top of the current collector electrode.
The sample being placed on top of the current collector electrode or the electrode itself is pressed against the optical window. In consequence, a very thin liquid film is formed on the working electrode, enabling the study of the solid-liquid interface. When a larger distance between the quartz glass window and the sample surface is required, e.g. to get a more homogeneous electric field across the working electrode surface, a ring-shaped glass-fibre separator can be put between working electrode and quartz glass window. A gold-plated stainless steel ring electrode serves as counter electrode. On demand, it can be replaced by a glassy carbon ring counter electrode. An electrolyte amount of approximately 2.0 ml is required.
Two lateral inlets enable the positioning of metal-wire based pseudo reference electrodes or re-fillable reference electrodes between working and counter electrode. The re-fillable reference electrode enables the user to build “real” reference electrodes of the 2nd kind. In addition, these inlets also can be used for initial filling of the cell and subsequent insertion of liquids or gas by means of the capillary-based filling set.
The test cell is designed to be air-tight when being assembled, enabling the user to work with air- and moisture-sensitive samples.
Technical Details
- Electrolyte volume:
Approx. 2 ml
- Working electrode current collector:
8 mm diameter stainless steel 1.4404 press-fitted in PEEK; other materials are available on demand as customization
- Required sample diameter (thin films on metal foil or free-standing electronically-conductive films):
max. 12.0 mm
- Test cell materials:
gold-plated copper (thermo block), gold-plated steel (spring), PEEK (housing, cap, plug, fittings), stainless steel 1.4404 (current collector electrode), quartz (optical window), FKM, EPDM or FFKM (O-rings)
- Sensor:
integrated Pt100 temperature sensor
- Temperature range (operation):
+10 °C to +40 °C
- Temperature range (storage):
+10 °C to +30 °C
- Required accessory to make electrical connection:
Microcell HC Setup, Microcell Passive, or customized cable set
Key Data
- Art. No.:
840218
- Material in contact with sample:
sample material / lower electrode, PEEK, stainless steel 1.4404 (current collector electrode), quartz glass (optical window), O-ring material (FFKM, EPDM)
- Electrodes:
- Electrolyte volume:
Approx. 2.0 ml
