Linear Sweep Voltammetry (LSV)

Linear sweep voltammetry performs a continuous linear potential scan from an initial to a final potential value. The technique simultaneously records potential and current as functions of time at a specified sampling rate, providing fundamental electrochemical information about redox processes.

The potential ramp is mathematically defined by three user-specified parameters: start potential (E_start), end potential (E_end), and either the ramp duration (t_ramp) or scan rate. The fourth parameter is automatically calculated to ensure consistent experimental conditions.

Safety features include programmable current limits (I_min/I_max) that can terminate the sweep early to protect both the sample and instrumentation from excessive currents. Additional limit values can be configured for any acquisition signal source to provide comprehensive system protection.

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 end	end potential	maximum DC potential of the last step can be set in absolute potential or relative to OCV	V
Scan Rate t ramp	\(\frac{|∆E|}{∆t}\) ramp duration	voltage scan rate for ramping from E start to E end duration voltage scan rate for ramping from E start to E end	\(\frac{V}{s}\) s
ODR	output data rate	number of measurement points per second 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 ramp determination	A
I max	maximum current	maximum current limit for premature ramp determination	A

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

Measurement Result

Linear sweep voltammetry generates current-potential (I-E) curves that reveal characteristic electrochemical features such as oxidation and reduction peaks, onset potentials, and limiting currents. The time-resolved voltage and current data enable analysis of reaction kinetics and mass transport properties.

Additional measurement channels can be activated to record supplementary signals, providing comprehensive characterization of the electrochemical system under investigation.

Custom Experiment Builder

This experiment is a combination of the following blocks:

• Open Circuit Measurement

• Ramp - Current Voltage Curve