Functional Carbonaceous Networks as Electrodes in Energy Storage Devices
Zusammenfassung der Projektergebnisse
The main aim of this project was to exploit the potential of conjugated porous polymer network-derived functional carbonaceous networks as electrodes in energy storage devices. To achieve this we first synthesized a range of microporous heteroatom-rich conjugated microporous polymer networks or covalent organic frameworks. The net- and frameworks featured small pores and high surface areas, chemically defined heteroatoms within the polymer backbone and could be carbonized in high yields to porous heteroatom-doped carbons. The derived carbon materials showed as well high surface areas and porosities and could be prepared at relatively low temperatures. The nature and amount of heteroatoms, which was shown to have a crucial influence on the electrochemical performance, could be tailored by the applied precursor polymer and the applied carbonization temperature. These novel carbonaceous materials were assembled into electrodes of energy storage devices, mainly electrochemical capacitors, which were subsequently tested by our Chinese research partners. Some of the as prepared heteroatom-doped carbon materials compared very well to the best reported carbonaceous materials for supercapacitor energy storage. Furthermore several other applications were successfully tested for the here derived materials, e.g. in redox-flow-batteries or for photocatalytic or electrocatalytic hydrogen evolution.
Projektbezogene Publikationen (Auswahl)
- Conversion of Amorphous Polymer Networks to Covalent Organic Frameworks under Ionothermal Conditions: A Facile Synthesis Route for Covalent Triazine Frameworks. J. Mater. Chem. A 2015, 3, 24422 – 24427
S. Kücken, J. Schmidt, L. Zhi, A. Thomas
(Siehe online unter https://doi.org/10.1039/c5ta07408h) - Structural Evolution of 2D Microporous Covalent Triazine-Based Framework toward the Study of High-Performance Supercapacitors. J. Am. Chem. Soc. 2015, 137, 219−225
L. Hao, J. Ning, B. Luo, B. Wang, Y. Zhang, Z. Tang, J. Yang, A. Thomas, L.J. Zhi
(Siehe online unter https://doi.org/10.1021/ja508693y) - Conjugated Microporous Polycarbazole Networks as Precursors for Nitrogen- Enriched Microporous Carbons for CO2 Storage and Electrochemical Capacitors. Chem. Mater. 2017, 29, 4885-4893
H. Wang, Z. Cheng, Y. Liao, J. Li, J. Weber, A. Thomas, C. F. J. Faul
(Siehe online unter https://dx.doi.org/10.1021/acs.chemmater.7b00857) - Fast tuning of covalent triazine frameworks for photocatalytic hydrogen evolution. Chem. Commun. 2017, 53, 5854-5857
S. Kücken, A. Acharjya, L. Zhi, M. Schwarze, R. Schomäcker, A. Thomas
(Siehe online unter https://doi.org/10.1039/c7cc01827d) - General Route to High Surface Area Covalent Organic Frameworks and Their Metal Oxide Composites as Magnetically Recoverable Adsorbents and for Energy Storage. ACS Macro Lett. 2017, 6, 1444-1450
Y. Liao, J. Li, A. Thomas
(Siehe online unter https://doi.org/10.1021/acsmacrolett.7b00849) - Nitrogen-Rich Conjugated Microporous Polymers: Facile Synthesis, Efficient Gas Storage, and Heterogeneous Catalysis. ACS Appl. Mater. Interfaces 2017, 9, 38390-38400
Y. Liao, Z. Cheng, W. Zuo, A. Thomas, C.F.J. Faul
(Siehe online unter https://doi.org/10.1021/acsami.7b09553) - Salt-templated porous carbon-carbon composite electrodes for application in vanadium redox flow batteries. J. Mater. Chem. A 2017, 5, 25193-25199
M. Schnucklake, S. Kücken, A. Fetyan, J. Schmidt, A. Thomas, C. Roth
(Siehe online unter https://doi.org/10.1039/c7ta07759a) - Efficient Supercapacitor Energy Storage Using Conjugated Microporous Polymer Networks Synthesized from Buchwald-Hartwig Coupling. Adv. Mater. 2018, 30, 1705710
Y. Liao, H. Wang, M. Zhu, A. Thomas
(Siehe online unter https://doi.org/10.1002/adma.201705710)
