A laterally designed all-in-one energy device using a thermoelectric generator-coupled micro supercapacitor

Kyungwhan Yang, Kyoungah Cho, Seunggen Yang, Yoonbeom Park, Sangsig Kim

    Research output: Contribution to journalArticlepeer-review

    33 Citations (Scopus)

    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 languageEnglish
    Pages (from-to)667-672
    Number of pages6
    JournalNano Energy
    Volume60
    DOIs
    Publication statusPublished - 2019 Jun

    Bibliographical note

    Funding Information:
    This work was supported in part by the Mid-career Researcher Program (No. NRF-2016R1E1A1A02920171 ), Technology Development Program to Solve Climate Change ( NRF-2017M1A2A2087323 ), and Brain Korea 21 Plus Project in 2019 through the National Research Foundation of Korea funded by the Korea government (MSIT) ; and a Korea University Grant.

    Publisher Copyright:
    © 2019 Elsevier Ltd

    Keywords

    • Micro supercapacitor
    • Seebeck effect
    • Thermoelectric charging
    • Thermoelectric generator

    ASJC Scopus subject areas

    • Renewable Energy, Sustainability and the Environment
    • General Materials Science
    • Electrical and Electronic Engineering

    Fingerprint

    Dive into the research topics of 'A laterally designed all-in-one energy device using a thermoelectric generator-coupled micro supercapacitor'. Together they form a unique fingerprint.

    Cite this