Potentiostat
User Manual
Ossila.com
20
Ossila Limited © 2020
(V)
Degas the Solution
Gently bubble inert gas through the solution using a thin tube or needle for approximately 10
minutes to remove dissolved oxygen.
(VI)
Connect the Potentiostat and Cell
Connect the correct ports on the potentiostat to all three electrodes using the banana cables.
9.3.2
Taking a Measurement
(I)
Start-up Procedure
Please allow 30 minutes for the potentiostat to warm up after turning on. Once warmed up, start
the Ossila Cyclic Voltammetry software. Ensure that the potentiostat is detected by the software.
If it is, the “Connected Systems” drop
-
down box will be populated, and the “Measure” button will
be green. If
there is nothing in the “Connected Systems” drop
-
down box and the “Measure” button
is greyed out, please refer to the troubleshooting guide in Section 10.
(II)
Experimental Parameters
Choose the appropriate current range for the material being measured. Fc will give a signal in the
tens to hundreds of microamps, therefore the 200 μA range should be selected from the drop
-
down box.
The scan profile needs to be defined. In a cyclic voltammetry measurement Fc undergoes a
reversible single electron transfer between 0 and 0.2 V (versus Ag/AgNO
3
). We can therefore use
the scan profile shown in
, sweeping the voltage from -0.4 V to 0.4 V and back to -0.4
V. Set the “Start Potential” and “Potential Vertex 2” fields to
-0.4
V and the “Potential Vertex 1” field
to 0.5 V.
