ALS SEC-C
Thin Layer Quartz Glass Spectroelectrochemical cell
High-End Spectroelectrochemical Testing
Spectroelectrochemistry (SEC) is aimed at the investigation of electrochemical reaction mechanism and the interface structure between electrolyte solution and electrode. Remarkable progress in this field and related technology enables SEC to be applied in wide areas.
Nowadays, the relation between absorbance and potential for reversible or quasi-reversible system is theoretically elucidated, on which basis the analysis of electrochemical characteristics becomes possible for the system otherwise difficult with only the result of voltammogram.
Applications:
- Real time monitoring of chromatic change by redox reaction
- Analysis of the charge transfer at the electrode/liquid interface
- Spectrometric measurement of near/surface of electrodes
- Absorbing spectrum of the product and intermediate
- Parameters: concentration, diffusion coefficient and life time
2 optical path lengths
Two varieties optical path length (0.5 and 1.0 mm)
Standard Reference Electrodes
Designed to use the 6.0 mm standard reference electrode
2 Working electrode materials
Two varieties of working electrodes (Au or Pt)
Compatibility
Cuvette designed to be compatible with most commercial standard spectrometers
Technical Specifications
Measurement example using cuvette type spectroelectrochemical cell
UV-visible absorption spectrum and absorbance of the product of the electrode reaction, performed with optically transparent electrode (OTE), were measured. Gold or Platinum mesh electrode was used as an OTE. Cyclic voltammetry and Absorbance of the 2 mM potassium ferricyanide, as the reference of the absorbance, performed in a SEC-C Thin Layer Quartz Glass Spectroelectrochemical cell are shown below.
Cyclic voltammetry for 2 mM potassium ferricyanide.
Absorption spectra of the electrolytic balance for 2 mM potassium ferricyanide electrolyzed at different potential.
Simultaneous measurements of the cyclic voltammetry and absorbance as well a constant potential electrolysis measurement were also performed. The electrolysis, reduction (Figure 3-1) and oxidation (Figure 3-2), of the potassium ferrocyanide solution are shown below.
Absorbance changes for the reduction of the potassium ferrocyanide.
Absorbance changes for the oxidation of the potassium ferricyanide.
Optical path length 1.0 mm Cell Kits
| Catalog No. | Description |
ALS 013716 | SEC-CT Thin Layer Quartz Glass Spectroelectrochemical cell Kit (Pt) |
ALS 013717 | SEC-CT Thin Layer Quartz Glass Spectroelectrochemical cell Kit (Au) |
Common Components (included in each kit)
| Catalog No. | Description |
ALS 013703 | SEC-C/C05 Pt counter electrode |
ALS 013718 | SEC-CT Thin Layer Quartz Glass cell |
ALS 011501 | SEC-C Teflon Cap |
ALS 010537 | Purging tube 10 cm |
Working Electrodes
| Catalog No. | Description |
ALS 011498 | SEC-C Pt Gauze working electrode (for ALS 013716 SEC-CT Pt Kit) |
ALS 012017
| SEC-C Au Gauze working electrode (for ALS 013717 SEC-CT Au Kit) |
The optical path length 1.0 mm is most suitable for basic spectrum electrochemistry measurements. Theoretically, it is possible to get the same result as for 0.5 mm with a half concentration sample.
Optical path length 0.5 mm Cell Kits
| Catalog No. | Description |
ALS 013700 | SEC-C05T Thin Layer Quartz Glass Spectroelectrochemical cell Kit (Pt) |
ALS 013701 | SEC-C05T Thin Layer Quartz Glass Spectroelectrochemical cell Kit (Au) |
Common Components (included in each kit)
| Catalog No. | Description |
ALS 013703 | SEC-C/C05 Pt counter electrode |
ALS 013702 | SEC-C05T Thin Layer Quartz Glass cell |
ALS 011501 | SEC-C Teflon Cap |
ALS 010537 | Purging tube 10 cm |
Working Electrodes*
| Catalog No. | Description |
ALS 012606 | SEC-C05 Pt Gauze working electrode (for ALS 013700 SEC-C05T Pt Kit) |
ALS 012607
| SEC-C05 Au Gauze working electrode (for ALS 013701 SEC-C05T Au Kit) |
The optical path length 0.5 mm has an electrolysis time shorter than 1.0 mm cell. The stability short time for the electrolysis makes possible to have a stable result as for, measurement of the high volatile organic solvent, detection of the unstable electrolysis products, and others.
∗There is a specific working electrode for 0.5 mm optical path length. The working electrode for 1.0 mm optical path length can not be used in 0.5 mm optical path length quartz cell.
Measurement example using cuvette type spectroelectrochemical cell
UV-visible absorption spectrum and absorbance of the product of the electrode reaction, performed with optically transparent electrode (OTE), were measured. Gold or Platinum mesh electrode was used as an OTE. Cyclic voltammetry and Absorbance of the 2 mM potassium ferricyanide, as the reference of the absorbance, performed in a SEC-C Thin Layer Quartz Glass Spectroelectrochemical cell are shown below.
Cyclic voltammetry for 2 mM potassium ferricyanide.
Absorption spectra of the electrolytic balance for 2 mM potassium ferricyanide electrolyzed at different potential.
Simultaneous measurements of the cyclic voltammetry and absorbance as well a constant potential electrolysis measurement were also performed. The electrolysis, reduction (Figure 3-1) and oxidation (Figure 3-2), of the potassium ferrocyanide solution are shown below.
Absorbance changes for the reduction of the potassium ferrocyanide.
Absorbance changes for the oxidation of the potassium ferricyanide.
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