Description
ratio = sqrt(scanRate/referenceScanRate); peakCurrent = referencePeakCurrent*ratio.
Electrochemical current and potential terms depend on reaction direction, transport geometry and a declared reference state. Named equations apply under specific kinetic or diffusion assumptions; one scaling factor is not a full electrochemical model.
ratio = sqrt(scanRate/referenceScanRate); peakCurrent = referencePeakCurrent*ratio.
When to use this tool
Use Randles Sevcik Scan Rate Square Root Factor when checking one supplied kinetic or transport-model contribution.
How to use the tool and how it works
- Enter referencePeakCurrent, referenceScanRate, scanRate. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read ratio, peakCurrent. Use the output convention below.
Require positive referenceScanRate and nonnegative scanRate. ratio = sqrt(scanRate/referenceScanRate); peakCurrent = referencePeakCurrent*ratio.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| referencePeakCurrent | Reference Peak Current | Required. Finite number. |
| referenceScanRate | Reference Scan Rate | Required. Finite number; strictly above 0. |
| scanRate | Scan Rate | Required. Finite number; minimum 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| ratio | Ratio using the stated numerator and denominator convention. | Required. Finite number. |
| peakCurrent | Peak Current | Required. Finite number. |
{
"input": {
"referencePeakCurrent": 4,
"referenceScanRate": 0.1,
"scanRate": 0.4
},
"output": {
"ratio": 2,
"peakCurrent": 8
}
}Limitations and assumptions
- This is a supplied square-root scaling under a Randles-Sevcik-style assumption, not a full diffusion calculation. Species, electrode area, temperature and reversible transport conditions are not established.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Use a suitable complete model and verified experimental conditions before interpreting a local term as mechanism, performance or a fitted parameter.
References
Similar or alternative tools
- Nernst Reaction Quotient Log Term
potentialCorrection = -gasConstant*temperatureK*ln(reactionQuotient)/(electronCount*faradayConstant).
- Tafel Current Decade Overpotential Term
decades = log10(currentDensity/exchangeCurrentDensity); overpotential = slopeVoltsPerDecade*decades.