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Schröter, Erik ; Elbinger, Lada ; Mignon, Manon ; Friebe, Christian ; Brendel, Johannes C. ; Hager, Martin D. ; Schubert, Ulrich S.:
High-capacity semi-organic polymer batteries : From monomer to battery in an all-aqueous process.
In: Journal of Power Sources.
Bd. 556
(2023)
.
- 232293.
ISSN 0378-7753
DOI: https://doi.org/10.1016/j.jpowsour.2022.232293
Abstract
Aqueous Zinc-batteries comprising organic cathode materials represent interesting candidates for sustainable, safe, environmentally friendly, and highly flexible secondary energy storage system. Here, we demonstrate that such an oxygen-tolerant, semi-organic setup can conveniently be prepared in an all-aqueous process, including all steps from the initial polymerization to the coin cell assembly without the need of any intermediate purification steps, and still reach high energy densities of 2.55 mAh cm−2. The TEMPO-modified and crosslinked poly(methacrylamide) cathode facilitates an excellent compatibility to the aqueous electrolyte and an efficient accessibility of the redox-active species due to the increased polarity of the material compared to the common poly(TEMPO-methacrylate) (PTMA). The material exhibits excellent stability (capacity retention of >99% after 1000 cycles at 5C) with low self-discharge and features high rate capabilities. The casting process from the aqueous slurry further appeared to be suitable for the preparation of ultra-thick but still homogeneous binder-free electrodes and exhibit total device capacities of approximately 4.5 mAh in a 2032-type coin cell. Since the overall process avoids harsh conditions or harmful solvents, is scalable, and relies on straightforward processing steps, it represents a promising step towards cost-effective and efficient rechargeable Zinc-based semi-organic batteries with competing capacities if further optimized.
Weitere Angaben
| Publikationsform: | Artikel in einer Zeitschrift |
|---|---|
| Begutachteter Beitrag: | Ja |
| Keywords: | Semi-organic battery; High capacity; Aqueous battery; TEMPO; PTMAm; Coin cell; Battery testing; Ultra-thick electrode; Self-discharge; Float testing; Rate testing |
| Institutionen der Universität: | Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie > Lehrstuhl Makromolekulare Chemie I |
| Titel an der UBT entstanden: | Nein |
| Themengebiete aus DDC: | 500 Naturwissenschaften und Mathematik > 540 Chemie |
| Eingestellt am: | 19 Feb 2024 13:28 |
| Letzte Änderung: | 19 Feb 2024 13:28 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/88616 |