Ion-liquid based super-capacitors with inner gate diode-like separators

TL;DR

This paper introduces a novel separator design with diode-like structures in ionic-liquid supercapacitors, significantly enhancing capacitance and reducing ESR by optimizing the p-n layout orientation.

Contribution

It presents a new separator architecture with diode-like features that improves supercapacitor performance compared to traditional designs.

Findings

Capacitance is substantially increased with the structured separator.

The p-side facing the auxiliary electrode yields the highest capacitance.

The smallest ESR is achieved with the p-side facing the auxiliary electrode.

Abstract

We demonstrate that the capacitance of ionic-liquid filled supercapacitors is substantially increased by placing a diode-like structure on the separator membrane. We call the structured separator: gate, and demonstrate that the order of a p-n layout with respect to the auxiliary electrode affects the overall cell's capacitance. The smallest ESR and the largest capacitance values are noted when the p-side is facing the auxiliary electrode.