Temperature-dependent capacitance of the electrical double layer

We use atomistic simulations to study the electrical double layer (EDL) at an electrode–electrolyte interface at different temperatures. For a constrained electrode charge, the potential drop over the EDL increases with temperature, a phenomenon known as the thermal voltage rise (TVR). Prior continuum models attributed TVR to expansion of the EDL with increasing temperature; conversely, our simulations with aqueous, organic, and ionic liquids show that the EDL does not expand but that the TVR is caused by a decrease in interfacial permittivity with increasing temperatures.

Content

DDC Class

620.1: Engineering Mechanics and Materials Science

Funding References

Funding(s)

EXC 3120 - BlueMat - Wassergesteuerte Materialien

EXC 3120 BlueMat - Cross Area Modeling

Files

Lizenz

https://creativecommons.org/licenses/by/4.0/

Publication version

publishedVersion

Download

Name

184703_1_5.0318194.pdf

Type

Main Article

Size

4.73 MB

Format

Adobe PDF