Analyze peak behavior with flexible electrochemical lab inputs. Compare reversible and irreversible electrode behavior easily. Generate plots, exports, and practical values for electrochemical studies.
This tool estimates cyclic voltammetry peak current from electrochemical inputs, then plots current against scan rate.
These sample values illustrate typical reversible calculations for electrochemical screening, method setup, and classroom demonstrations.
| Case | n | Area (cm²) | D (cm²/s) | Conc. (mM) | Scan Rate (mV/s) | Temp. (K) | Peak Current (µA) |
|---|---|---|---|---|---|---|---|
| Ferrocene standard | 1 | 0.070 | 7.6e-6 | 1.0 | 100 | 298.15 | 16.394 |
| Higher concentration run | 1 | 0.100 | 6.5e-6 | 2.0 | 50 | 298.15 | 30.631 |
| Two-electron response | 2 | 0.120 | 8.0e-6 | 0.5 | 200 | 298.15 | 57.669 |
Cmol/cm³ = CmM × 10-6
vV/s = vmV/s ÷ 1000
ip = 0.4463 × n × F × A × C × √[(n × F × D × v) / (R × T)]
ip = 0.496 × n × F × A × C × √[(α × n × F × D × v) / (R × T)]
icorrected = (signed theoretical current × correction factor) + baseline current
Where:
It estimates cyclic voltammetry peak current from diffusion, concentration, electrode area, scan rate, temperature, and electron-transfer assumptions. It also applies optional baseline and empirical correction settings.
Use the reversible model when electron transfer is fast and the system behaves near equilibrium during the voltammetric sweep. It is common for well-behaved redox couples.
Use the irreversible model when kinetics are slower and peak formation depends on the transfer coefficient. This is useful for less ideal electrode processes or strongly coupled chemical effects.
Millimolar units are common in electrochemical labs. The calculator converts mM to mol/cm³ internally so the equations remain dimensionally consistent.
Peak current scales with the square root of scan rate in diffusion-controlled behavior. Faster scans reduce diffusion-layer thickness and raise the measured current response.
The correction factor lets you tune the theoretical result to better match calibrated experiments. It is helpful when geometry, roughness, or instrument response shifts the measured current.
Baseline current represents background offset from charging, drift, or other non-faradaic contributions. Add a positive or negative value to reflect your observed baseline trend.
Yes. It is useful for quick teaching demonstrations, parameter sensitivity checks, method planning, and early experiment design before full fitting with specialized electrochemical software.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.