Abstract
In order to minimize unintentional discharge, supercapacitors are interfaced with a membrane that separates the anode from the cathode—this membrane is called the separator. We focus here on separators, which are structured as electronic diode-like. We call an electrically structured separator “the gate”. Through experiments, it was demonstrated that ionic liquid-filled supercapacitors, which were interfaced with gated separators exhibited a substantial capacitance (C) increase and reduction in the equivalent series resistance (ESR) compared to cells with ordinary separators. These two attributes help to increase the energy, which is stored in a cell, since for a given cell’s voltage, the dissipated energy on the cell, UR = V2/4(ESR) and the stored energy, UC = CV2/2, would increase. These were indeed ionic diodes since the order of the diode layout mattered—the diode-like structures exhibited maximum capacitance when their p-side faced the auxiliary electrode.
Original language | English (US) |
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Article number | 39 |
Pages (from-to) | 1-9 |
Number of pages | 9 |
Journal | ChemEngineering |
Volume | 3 |
Issue number | 2 |
DOIs | |
State | Published - Jun 2019 |
All Science Journal Classification (ASJC) codes
- General Chemical Engineering
- General Engineering
- General Energy
Keywords
- Diode-like separators
- Energy storage elements
- Gated supercapacitors
- Supercapacitors