How to measure OCP potential in CHI660e?

How to interpolate from a time-series database ?

Hi, I am having trouble with a problem, in the field of Optimal Control and the generation of optimal time-series. Let's consider a system, whose dynamics are represented by dx/dt =...

24 February 2021 9,105 2 View

Electrochemical testing in highly resistive lubricants using AgCl electrode?

I am trying to do some basic electrochemical corrosion tests (OCP, EIS, LPR) on steel samples in an oil-based lubricant. The resistivity of the oil poses a problem for the measurements of...

02 June 2020 6,079 3 View

Why OCP is differnet when test the same BFC with fruits and animals?

I developed a BFC (GOD anode and BOD cathode), tested it with apple and mouse's blood, the OCP with apple was 0.62V, but the OCP with mouse's blood was only 0.5V, I thought the OCP should be same...

25 March 2020 2,866 1 View

Is there a way to make OCP stabilise faster for EIS measurements of an organic coating?

OCP pitting seems to be too high (+- 15mV) to make EIS and Potentiodynamic measurements even after 12 hours. I have uploaded an image of the ocp curve ran for 17 hours. Is there a way making it...

10 November 2019 2,781 7 View

How to prevent OCP (Open circuit potential) fluctuation due to external noise?

I am measuring OCP between working and reference electrode. As referance electrode I am using Pt-H2 electrode. As a working electrode, I am using platinum electrode. Referance electrode is filled...

10 November 2019 8,362 3 View

Measurement dissolution rate?

Hi How can I measure dissolution rate or oxidation rate of metals like carbon steel from OCP or Polarization tests?

07 November 2019 7,583 1 View

When measuring open circuit potential, is there current flow through the cell?

The OCP is defined as the potential between two electrode terminals when no current flows. Why is current still detected?

20 August 2019 3,518 4 View

When measuring open circuit potential, is there current flow through the cell?

The OCP is defined as the potential between two electrode terminals when no current flows. Why is current still detected?

07 August 2019 7,250 5 View

What could be the reason behind similar EIS spectra in the low frequency even after changing amplitude?

I am testing steel embedded in mortar. Test parameters are AC mplitude 10 mV; Frequency 10^6 to 0.01 Hz, 10 points per decade and OCP as DC potential. My EIS curve looks similar in the low...

02 March 2019 8,270 5 View

What could be the reason behind similar EIS spectra in the low frequency even after changing amplitude?

I am testing steel embedded in mortar. Test parameters are AC mplitude 10 mV; Frequency 10^6 to 0.01 Hz, 10 points per decade and OCP as DC potential. My EIS curve looks similar in the low...

02 March 2019 1,163 4 View

Muhammad Junaid Anjum

You can find the information in the manual if you like. There should be a "T" sign in the tool bar

Manual Link:

https://tanglab.hku.hk/content/uploads/2022/01/Electrochemistry-CHI660e-SOP-2021.pdf

Naima Ghemmit-Doulache

OCP measurement in the CHI660e potentiostat is carried out in accordance with the information given in the device manual, using the stable polarization technique.

once you open the OCP technique window, you must enter the required information: test duration, electrode type and current must be zero.

when the OCP potential stabilizes, you take this free potential value.