In situ generation of electrolyte inside pyridine-based covalent triazine frameworks for direct supercapacitor integration

  • The synthesis of porous electrode materials is often linked with the generation of waste that results from extensive purification steps and low mass yield. In contrast to porous carbons, covalent triazine frameworks (CTFs) display modular properties on a molecular basis through appropriate choice of the monomer. Herein, the synthesis of a new pyridine-based CTF material is showcased. The porosity and nitrogen-doping are tuned by a careful choice of the reaction temperature. An in-depth structural characterization by using Ar physisorption, X-ray photoelectron spectroscopy, and Raman spectroscopy was conducted to give a rational explanation of the material properties. Without any purification, the samples were applied as symmetrical supercapacitors and showed a specific capacitance of 141 F g\(^{−1}\). Residual ZnCl\(_2\), which acted formerly as the porogen, was used directly as the electrolyte salt. Upon the addition of water, ZnCl\(_2\) was dissolved to form the aqueous electrolyte in situ. Thereby, extensive and time-consuming washing steps could be circumvented.

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Author:Erik TroschkeGND, Desirée LeistenschneiderGND, Tilo RenschORCiDGND, Sven GrätzORCiDGND, Johannes MaschitaGND, Sebastian EhrlingGND, Benjamin KlemmedGND, Bettina Valeska LotschGND, Alexander EychmüllerGND, Lars BorchardtORCiDGND, Stefan KaskelORCiDGND
URN:urn:nbn:de:hbz:294-81781
DOI:https://doi.org/10.1002/cssc.202000518
Parent Title (English):ChemSusChem
Publisher:Wiley
Place of publication:Weinheim
Document Type:Article
Language:English
Date of Publication (online):2021/06/23
Date of first Publication:2020/04/03
Publishing Institution:Ruhr-Universität Bochum, Universitätsbibliothek
Tag:covalent triazine frameworks; cyclotrimerization; nitrogen heterocycles; supercapacitors; waste prevention
Volume:13
Issue:12
First Page:3192
Last Page:3198
Note:
Dieser Beitrag ist auf Grund des DEAL-Wiley-Vertrages frei zugänglich.
Institutes/Facilities:Lehrstuhl für anorganische Chemie I
Dewey Decimal Classification:Naturwissenschaften und Mathematik / Chemie, Kristallographie, Mineralogie
open_access (DINI-Set):open_access
faculties:Fakultät für Chemie und Biochemie
Licence (English):License LogoCreative Commons - CC BY 4.0 - Attribution 4.0 International