Vertex electrochemical workstation is designed specifically for complex electrochemical experiments. The following is a detailed analysis of its core functions and technical features:

1、 Vertex Electrochemical Workstation Basic Electrochemical Measurement Mode

1. DC Techniques

Linear sweep voltammetry (LSV/Voltametry)

By applying a linearly varying potential and recording the current response, it is used to study electrode process kinetics and determine the redox potential window. Support forward/reverse scanning direction setting, customizable scanning rate (in the range of μ V/s to V/s). Typical applications include:

Analysis of ion selective permeation characteristics of membrane materials

Drawing of Sensitivity Calibration Curve for Biosensors

Cyclic voltammetry (CV)

Reversibility assessment under triangular wave potential excitation: When the peak current ratio (IPC/Pa) approaches the theoretical value, it indicates diffusion control process; The peak spacing Δ Ep can be used to calculate the electron transfer rate constant k0.

Multi circle stacking function is used to characterize the adsorption behavior of surface active species (such as calculating the single-layer coverage rate θ).

Square wave voltammetry (SWV) and differential pulse voltammetry (DPV)

High sensitivity detection limit (up to nM level), suitable for trace substance analysis. SWV adopts low-frequency small amplitude AC superposition, effectively suppressing charging current interference; DPV improves the signal-to-noise ratio through differential signal processing.

2. Impedance Spectroscopy (EIS)

The frequency range covers μ Hz~MHz, supporting model fitting of parameters such as double-layer capacitance Cdl and charge transfer resistance Rct. The special advantage lies in:

Multiple sine wave superposition test reduces data acquisition time

Kramers Kronig conversion verifies data consistency

Application scenarios: Research on ion conduction mechanism of battery SEI film, failure analysis of corrosion protection coating. When using ZSimpWin software for equivalent circuit simulation, it is possible to distinguish between non Faraday processes and reaction kinetics limiting steps.

2、 Vertex Electrochemical Workstation Advanced Transient Technology

1. Timing method family

Chronoamperometry (CA)

After setting a fixed potential, monitor the current decay curve over time and analyze the diffusion coefficient D based on the Cottrell equation. The improved i-t curve can be combined with a rotating disk electrode (RDE) to study mass transfer under convective diffusion conditions.

Constant current step (CP)

Control constant current input and record the trajectory of potential changes. Coulombic efficiency calculation applicable to sedimentation/dissolution processes, such as precise and controllable preparation of electroplating layer thickness.

Multi Step Staircase

Segmented setting of different potential platforms, automatic extraction of Tafel slopes within each interval, and construction of a complete Tafel plot for corrosion rate assessment.

2. Mobile system adaptation

When equipped with a circulation pool module, it can achieve:

Flow Injection Analysis (FIA): Transient signal peaks are generated when the sample continuously flows through the surface of the working electrode with the carrier liquid

Online monitoring of intermediate lifespan in reactions: capturing millisecond level dynamic processes with a fast sampling module