Abstract
As an all-in-one energy device, we propose a thermoelectric generator-coupled micro supercapacitor (TEG-MSC) consisting of a planar micro supercapacitor linked directly to the thermoelectric pn modules of p-Ag 2 Te and n-Ag 2 Se nanoparticle thin films. In the TEG-MSC, a Seebeck voltage of 82 mV is generated at a temperature difference of 15.8 K and is rapidly charged with an efficiency of 98%. Additionally, the proposed device achieves a discharging and charging ratio of 99%. The small size and thinness of the TEG-MSC results in a high volumetric energy density of 697 μJ cm −3 . These excellent performance results stem from the lowering of ionic conductivity via heat treatment. In contrast to other ionic supercapacitors, the Soret effect is eliminated in the TEG-MSC. This shortens the charging time and significantly increases the ratio of discharging and charging.
Original language | English |
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Pages (from-to) | 667-672 |
Number of pages | 6 |
Journal | Nano Energy |
Volume | 60 |
DOIs | |
Publication status | Published - 2019 Jun |
Keywords
- Micro supercapacitor
- Seebeck effect
- Thermoelectric charging
- Thermoelectric generator
ASJC Scopus subject areas
- Renewable Energy, Sustainability and the Environment
- Materials Science(all)
- Electrical and Electronic Engineering