Free Fuel Cell Spectra Analysis Tool

Inputs

Data file; 3 data columns: frequency Hz (descending), Re(Z), -Im(Z))

This file must contain three columns: frequency, Zreal, and -Zimag. It must include only numerical values separated by commas and have no column headers. Frequencies must be listed in descending order, and the negative of the imaginary impedance must be provided (-Zimag). Download the example file: MyImpedance.dat.

Analysis mode

Real Imaginary Real + Imaginary

Inductive loop

Yes No

Lambda (Tikhonov regularization parameter)

Use auto suggestion

Suggested: {{ lambdaSuggested }}

Lambda selection (click a point, or type in the window above)

DTT frequency sliders (log10 scale)

Zeta

{{ fstar[0].toExponential(2) }} Hz

Alpha

{{ fstar[1].toExponential(2) }} Hz

Beta

{{ fstar[2].toExponential(2) }} Hz

Analysis runs automatically after file upload and when settings change.

Logs

{{ logs.join('\n') }}

Results

Upload your file to see plots and tables.

DRT Peaks

Frequency (Hz)	Polarization (mOhm*cm2)
{{ row.freq.toExponential(3) }}	{{ row.resist_mohm.toFixed(3) }}

DTT Peaks

Frequency (Hz)	Polarization (mOhm*cm2)
{{ row.freq.toExponential(3) }}	{{ row.resist_mohm.toFixed(3) }}