Finite-element simulations of EDL capacitor impedance identify ambipolar diffusion as the source of slanted Nyquist lines when biased or with unequal ion diffusivities, leading to new Warburg short/open circuit models and relations to ambipolar diffusion coefficient and chemical capacitance.
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The impedance of a charged flat-plate electric double-layer capacitor
Finite-element simulations of EDL capacitor impedance identify ambipolar diffusion as the source of slanted Nyquist lines when biased or with unequal ion diffusivities, leading to new Warburg short/open circuit models and relations to ambipolar diffusion coefficient and chemical capacitance.