Staircase Voltammetry

In staircase voltammetry, a potential scan is performed using discrete potential steps with a constant step height.

The potential and current are measured over time at a defined sampling rate.

The potentiostatic staircase can be terminated early if a defined current limit I_min/I_max is exceeded.

Parameter Description

Parameter	Name	Description	Unit
E _start	start potential	starting DC potential can be set in absolute potential or relative to OCV	V
E _step	step potential	potential of each step for the staircase function	V
E _end	end potential	maximum DC potential of the last step can be set in absolute potential or relative to OCV	V
t _settle	settle time	settling time at E _start before the first I-V step is stimulated	s
t _step	step duration	duration of each step of the staircase function of I-V	s
ODR	output data rate	number of measurement points per second autoranging is only available for rates up to 50 Hz note: the current is always measured at the maximum possible speed and integrated for the selected data rate	\(\frac{1}{s}\)
I _range	current range (abs)	optional fixed current range selection if autoranging is disabled	A
I _min	minimum current	minimum current limit for premature staircase determination	A
I _max	maximum current	maximum current limit for premature staircase determination	A

A Start Phase Potentiostatic can be enabled or disabled before the method is executed.

The voltage and current curves are recorded as a function of time. Additional measurement signals are also recorded when activated.

This experiment is a combination of the following blocks: