Eintrag in der Universitätsbibliographie der TU Chemnitz
Volltext zugänglich unter
URN: urn:nbn:de:bsz:ch1-qucosa2-715395
Wang, Jinhui
Schmidt, Oliver G. (Prof. Dr.) ; Zhu, Feng (Prof. Dr.) (Gutachter)
Integrated Micro-Supercapacitor: Design, Fabrication, and Functionalization
Kurzfassung in englisch
Owing to the advantages of high power density, fast charge/discharge rates as well as long lifetime, micro-supercapacitor (MSC) has drawn much attention for its potential application in miniaturized electronics. Many efforts have been devoted to the design and fabrication of high-performance MSCs. On the other hand, the integration of MSCs with multiple functional materials and devices has emerged with the development of portable and wearable microelectronics. To date, the biggest challenge in research is to develop a reliable and smart fabrication technology/strategy, which can integrate diverse objective materials into compact devices.Rolled-up nanotechnology is a unique approach to self-assemble 2D nanomembranes into 3D structures by using strain engineering. This self-assembly process smartly combines top-down and bottom-up methods to pattern functional nanomaterials into ordered 3D micro- and nanostructure arrays. One promising advantage of this approach is that such a self-assembled structure can endow micro-devices with functionality and high performance under a limited footprint area.
The first part of this thesis focuses on the fabrication of planar interdigital MSCs with thermo-responsive function. Based on this work, the second part involves the research on novel tubular MSC which was fabricated by employing shapeable materials and strain engineering. A polymeric framework consisting of swelling hydrogel and polyimide layers ensures excellent ion transport between electrodes and provides efficient self-protection of the tubular MSC against external compression. Such tubular device also exhibits excellent areal capacitance, and an improved cycling stability compared to that of planar MSCs. The third part introduces the step-by-step experiments towards the fabrication and optimization of inorganic strained layer-based tubular MSC. Al2O3/Ni/Cr/Al2O3 strained nanomembrane is designed and can successfully drive the rolling up of MnO2 electrodes with a high yield under magnetic fields.
| Universität: | Technische Universität Chemnitz | |
| Institut: | Professur Materialsysteme der Nanoelektronik | |
| Fakultät: | Fakultät für Elektrotechnik und Informationstechnik | |
| Dokumentart: | Dissertation | |
| Betreuer: | Schmidt, Oliver G. (Prof. Dr.) | |
| URL/URN: | https://nbn-resolving.org/urn:nbn:de:bsz:ch1-qucosa2-715395 | |
| SWD-Schlagwörter: | Energiespeicherung , Nanotechnologie , Superkondensator | |
| Freie Schlagwörter (Englisch): | strain engineering , energy storage , supercapacitor , miniaturization , integration , functionalization | |
| DDC-Sachgruppe: | Ingenieurwissenschaften | |
| Sprache: | englisch | |
| Tag der mündlichen Prüfung | 15.07.2020 |
