Eintrag in der Universitätsbibliographie der TU Chemnitz
Volltext zugänglich unter
URN: urn:nbn:de:bsz:ch1-qucosa2-1018188
Tang, Hongmei
Schmidt, Oliver G. (Prof. Dr. Prof. h.c.) ; Yang, Nianjun (Prof. Dr. ) (Gutachter)
A “cathode-less” Zn-MnO2 aqueous battery: from cm- to μm-scale
Kurzfassung in englisch
The fast development of autonomous miniaturized electronics down to the millimeter and even sub-millimeter scale, with the integration of multiple functional components, has triggered an urgent demand for size-compatible onboard power supplies for independent control and mission execution. Integrable micro-batteries allow for an on-demand call-up for energy. However, challenges rely on the micromachining and integration process. In addition to technical compatibility with other components (e.g., sensors) integration, micro-batteries require durable active materials and clever architectures to meet both requirements of stable energy output and a small footprint. Swiss-roll structures formed by rolling the planar thin film through etching and fine strain engineering enable reduced footprint area and enhanced ion diffusion. Meanwhile, using redox-active species stored in the media (e.g., Zn2+ and Mn2+ in the soil) opens up more opportunities for material selection and potentially simplifies the fabrication. In our work, we employ the Swiss-roll architecture and store energy in the electrolyte to construct a micro-scale aqueous battery based on the Zn2+/Zn0 reaction at the anode and the Mn(IV)/Mn(II) conversion at the cathode. This “cathode-less” battery chemistry arouses power supply applications “everywhere” by casting conductive ink on different substrates. Furthermore, the combination of microfluidic technique and Swiss-roll architecture realizes the decoupling of electrolytes concerning on-chip microfabrication. The tunable capacity by adjusting the charging time and electrolyte concentration allows flexible manipulation of the micro-batteries with the potential of integration with onboard micro-components for miniaturized devices in the future.
| Universität: | Technische Universität Chemnitz | |
| Institut: | MAIN-Forschung Professur Materialsysteme der Nanoelektronik (Prof. Schmidt) | |
| Fakultät: | Fakultät für Elektrotechnik und Informationstechnik | |
| Dokumentart: | Dissertation | |
| Betreuer: | Schmidt, Oliver G. (Prof. Dr. Prof. h.c.) | |
| DOI: | doi:10.60687/2026-0024 | |
| SWD-Schlagwörter: | Zink-Ionen-Akkumulator , Mikrobatterie , Miniaturisierung , Impedanzspektroskopie | |
| Freie Schlagwörter (Deutsch): | Zink-Ionen-Batterie , elektrochemische Impedanzspektroskopie , Aufrolltechnik | |
| Freie Schlagwörter (Englisch): | micro-battery , electrolyte confinement , decoupled electrolyte , high efficiency | |
| DDC-Sachgruppe: | 621.3 | |
| Sprache: | englisch | |
| Tag der mündlichen Prüfung | 13.05.2025 | |
| OA-Lizenz | CC BY 4.0 |
