Tetrathiafulvalene-based covalent organic frameworks as high-voltage organic cathodes for lithium batteries

• Type: Article in International Scientific Journal
• Date: 2024

Authors

Gonçalo Valente (Author) Other; Raquel Dantas (Author) Other; Pedro Ferreira (Author) Other; Rebecca Grieco (Author) Other; Nagaraj Patil (Author) Other; Ana Guillem-Navajas (Author) Other; David Rodríguez-San Miguel (Author) Other; Felix Zamora (Author) Other; Roman Guntermann (Author) Other; Thomas Bein (Author) Other; Joao Rocha (Author) Other; Helena Braga (Author) FEUP; Karol Strutynski (Author) Other; Manuel Melle-Franco (Author) Other; Rebeca Marcilla (Author) Other; Manuel Souto (Author) Other

Journal

Title: Journal of Materials Chemistry A

Vol. 12

ISSN: 2050-7488

Publisher: Royal Society of Chemistry

Indexing

ISI Web of Knowledge - 0 Citations

ISI Web of Science

Scopus - 0 Citations

Associated Projects

RedoxMOFs - Redox-active Metal-Organic Frameworks as Electrode Materials for Lithium-Ion Batteries

NGS -New Generation Storage - NGS -New Generation Storage

Other information

Authenticus ID: P-016-W6M

DOI: 10.1039/d4ta04576a

Abstract (EN): Redox-active covalent organic frameworks (COFs) are promising electrode materials for metal-ion batteries owing to their tunable electrochemical properties, adjustable structure, and resource availability. Herein, we report a series of two-dimensional tetrathiafulvalene (TTF)-based COFs incorporating different organic linkers between the electroactive moieties. These COFs were investigated as p-type organic cathode materials for lithium-organic batteries. The electrical conductivity of both neutral and doped TTF-COFs was measured using a van der Pauw setup, and their electronic structures were investigated through quantum-chemical calculations. Binder-free buckypaper TTF-based electrodes were prepared and systematically tested as organic cathodes in lithium half-cells. The results revealed high average discharge potentials (similar to 3.6 V vs. Li/Li+) and consistent cycling stability (80% capacity retention after 400 cycles at 2C) for the three TTF-COF electrodes. In addition, the specific capacity, rate capability, and kinetics varied depending on the structure of the framework. Our results highlight the potential of TTF-COFs as high-voltage organic cathodes for metal-ion batteries and emphasize the importance of molecular design in optimizing their electrochemical performance. We report a series of 2D tetrathiafulvalene (TTF)-based COFs incorporating different organic linkers between the electroactive moieties that were investigated as p-type organic cathode materials for lithium-organic batteries.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 9