Njord Seminar with Mathijs Janssen

Mathijs Janssen (University of Oslo): Electrolyte relaxation near electrified surfaces—from flat plates to nanoporous supercapacitors

A poster for a Njord seminar showing presenter, title, date, Njord seal, and Zoom link.


Several modern technologies that store and convert energy electrochemically are based on the dynamics and structure of electrolytes in porous electrodes. Electronic surface charge on such electrodes is screened in the electrolyte by a diffuse cloud of ions, forming so-called electric double layers (EDLs). In this talk, I will present minimal models for the formation of such EDLs. I will start by discussing electrolyte relaxation near flat electrodes [1] and will then discuss the effect of thermal gradients [2], electrode curvature [3], and electrode porosity [4-6]. Time permitting, I will discuss how porous electrodes can be used to harvest energy by mixing sea and river water.


[1] M. Janssen and M. Bier, Phys. Rev. E 97, (2018)

[2] M. Janssen and M. Bier, Phys. Rev. E 99, (2019)

[3] M. Janssen, Phys. Rev. E 100, (2019)

[4] C. Liang, M. Janssen, H. Liu, R. van Roij, Phys. Rev. Lett. 124, (2020)

[5] M. Janssen, Phys. Rev. Lett. 126, (2021) [6] M. Janssen and J. Bisquert, J. Phys. Chem. C 125, (2021)

You will find the complete schedule for Njord Seminar Series fall '21 here.

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Published Sep. 27, 2021 12:58 PM - Last modified Sep. 27, 2021 12:58 PM