GITT - Setup Parameters (page 2)

Description

Second setup page of the Galvanostatic Intermittent Titration Technique experiment. Press OK to continue or Cancel to go back to the first setup page.

Parameter

Description

Units

Mode

Set the polarity of the current pulses being applied:

•Charge

Electric current flows out of the cell through the working lead (green) and into the cell through the counter lead (red). When Positive is selected for the Working Lead in a two-terminal cell, electrons flow out from the positive terminal and into the negative terminal.

•Discharge

Electric current flows out of the cell through the counter lead (red) and into the cell through the working lead (green). When Positive is selected for the Working Lead in a two-terminal cell, electrons flow out from the negative terminal and into the positive terminal.

Current

Specify the magnitude of the current pulse.

amperes (A)

Max On Time

Duration of each current pulse to be applied. A typical value is 10–15 minutes.

seconds (s), minutes (min), hours (hr), days (d)

Rest Time

The duration of each rest phase during the experiment. A typical value is 10–15 minutes.

seconds (s), minutes (min), hours (hr), days (d)

Sample Period On

The spacing between data points during the pulse signals.

seconds (s)

Sample Period Rest

The spacing between data points during the rest periods.

seconds (s)

Stop At 1

Specify various limits to an experiment. Choose a limit criterion from the drop-down list and enter a limit value. The unit automatically updates according to the criterion. The limit, if met, causes the experiment to skip to the next step, or stop if there is no subsequent step.

Most experiments have Stop At 1 and Stop At 2 criteria. These parameters are treated equally, and if both are used, they are both tested on every raw data point. If either limit is reached, the experiment skips to the next step or stops entirely.

Gamry tip bulb

Different experiments allow different tests, but the principles that govern their behavior are the same.

The available stop tests are:

•None

oNo stop test is specified. The experiment runs until the maximum specified time is reached.

•Voltage

oVoltage < Limit	Stop if the measured voltage is less than the value entered in volts (V).
oVoltage > Limit	Stop if the measured voltage is greater than the value entered in volts (V).
o\|Voltage\| < Limit	Stop if the absolute value of the measured voltage is less than the value entered in volts (V).
o\|Voltage\| > Limit	Stop if the absolute value of the measured voltage is greater than the value entered in volts (V).
o\|dV/dT\| < Limit	Stop if the absolute value of the measured voltage change rate is less than the value entered in V/s.
o\|dV/dT\| > Limit	Stop if the absolute value of the measured voltage change rate is greater than the value entered in V/s.

•Current

oCurrent < Limit	Stop if the measured current is less than the value entered in amperes (A).
oCurrent > Limit	Stop if the measured current is less than the value entered in amperes (A).
o\|Current\| < Limit	Stop if the absolute value of the measured current is less than the value entered in amperes (A).
o\|Current\| > Limit	Stop if the absolute value of the measured current is greater than the value entered in amperes (A).
o\|dI/dT\| < Limit	Stop if the absolute value of the measured current rate of change is less than the value entered in A/s.
o\|dI/dT\| > Limit	Stop if the absolute value of the measured current rate of change is greater than the value entered in A/s.

•Temperature

oTemp > Limit	Stop if the measured temperature is greater than the value entered in degree Celsius (°C).
o\|dTemp/dt\| > Limit	Stop if the absolute value of the measured temperature change is greater than the value entered in °C/min.

•Charge and Energy

o\|Charge\| > Limit	Stop if the absolute value of accumulated charge is greater than the value entered in A-hr.
o\|Energy\| > Limit	Stop if the absolute value of transferred energy is greater than the value entered in joules (J).

Stop At 2

GITT - Setup Parameters (page 2)

GITT - Setup Parameters (page 2)

Description

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