5 papers
The impedance of a charged flat-plate electric double-layer capacitor
Adrian L. Usler, David Fertig, Mathijs Janssen
We calculate the impedance of a flat-plate electric double-layer (EDL) capacitor by means of Finite Element Method simulations of modified Poisson--Nernst--Planck equations. In Nyq…
Basic requirements for potential differences across solid--fluid interfaces
David Fertig, Adrian L. Usler, Mathijs Janssen
At model water--vapor and water--solid interfaces, molecular ordering leads to charge oscillations and, thereby, to a spatially varying electrostatic potential. Atomistic simulatio…
Convection can enhance the capacitive charging of porous electrodes
Aaron D. Ratschow, Alexander J. Wagner, Mathijs Janssen +1
Charge transport in porous electrodes is foundational for modern energy storage technologies like supercapacitors, fuel cells, and batteries. Supercapacitors in particular rely sol…
Faradaic and capacitive charging of an electrolyte-filled pore in response to a small applied potential
Timur Aslyamov, Massimiliano Esposito, Mathijs Janssen
Electrochemical devices often charge both through Faradaic reactions and electric double layer formation. Here, we study these coupled processes in a model system of a long electro…
Charging dynamics of electric double layer capacitors including beyond-mean-field electrostatic correlations
David Fertig, Mathijs Janssen
Electric double layer (EDL) formation underlies the functioning of supercapacitors and several other electrochemical technologies. Here, we study how the EDL formation near two fla…