cover image: Long-cycling of a water-soluble quinizarin derivative in redox flow batteries: Role of the cut-off voltage on the stability

Long-cycling of a water-soluble quinizarin derivative in redox flow batteries: Role of the cut-off voltage on the stability

20 Jan 2024

To improve the industrial applicability of aqueous organic redox flow batteries (AORFB), inexpensive redox compounds highly soluble in aqueous medium and stable during cycling are required. Thus, a water-soluble quinizarin derivative, 1,4-dihydroxy-2-carboxymethyl-9,10-anthraquinone (1,4-CDHAQ) prepared by a one-pot synthesis from relatively low-cost leucoquinizarin (widely used as intermediate in the dye industry) is evaluated in AORFB. It exhibits a good solubility in basic medium (> 0.4 M) and a low potential (-0.64 V vs Ag/AgCl) leading to a cell voltage of about 1 V when paired with ferri/ferrocyanide couple. Long-cycling AORFB of 2.5 months performed at a concentration of 0.4 M gives good performance in terms of energy efficiency and power density. The influence of the temperature on ASR values and so on the power density underlines the difficulty to obtain reproducible results at room temperature. A capacity fade rate of 0.008 %/cycle (0.28 %/day) is obtained after 2500 cycles, which is close to other values reported for anthraquinones in strong basic medium for long-cycling tests. Interestingly, the discharge cut-off voltage clearly affects the stability of the battery, leading to the formation of different degradation products as shown by 1H NMR. These results highlight the importance of the cycling conditions to improve the battery performance.

Authors

Ines Ozouf, Jean-Marie Fontmorin, Raphael Lebeuf, Gaël Mathieu, S. Guiheneuf, G. Ozouf, Véronique Rataj, T. Godet-Bar, Didier Floner, Jean-Marie Aubry, Florence Geneste

Bibliographic Reference
Ines Ozouf, Jean-Marie Fontmorin, Raphael Lebeuf, Gaël Mathieu, S. Guiheneuf, et al.. Long-cycling of a water-soluble quinizarin derivative in redox flow batteries: Role of the cut-off voltage on the stability. Electrochimica Acta, 2024, Electrochimica Acta, 475, pp.143570. ⟨10.1016/j.electacta.2023.143570⟩. ⟨hal-04329762⟩
DOI
https://doi.org/10.1016/j.electacta.2023.143570
HAL Collection
["Université d'Artois", 'Université de Rennes 1', 'CNRS - Centre national de la recherche scientifique', 'Institut National des Sciences Appliquées de Rennes', 'Ecole Nationale Supérieure de Chimie de Rennes', 'Unité de Catalyse et de Chimie du Solide', 'INSTITUT DES SCIENCES CHIMIQUES DE RENNES', 'Matière Condensée et Systèmes Electroactifs', 'Université de Rennes 1 - UFR Sciences et Propriétés de la Matière', 'Institut de Chimie du CNRS', 'UFR SPM Sciences et Propriétés de la Matière', 'Publications labos UR1 dans HAL-Rennes 1', 'UR1 - publications SDLM', 'TEST Université de Rennes CSS', 'Université de Rennes', 'Université de Lille', 'Groupe INSA', 'ANR', 'Pôle Rennes 1 - Matériaux']
HAL Identifier
4329762
Institution
['Université de Rennes', 'Institut National des Sciences Appliquées - Rennes', 'Ecole Nationale Supérieure de Chimie de Rennes', 'Institut de Chimie - CNRS Chimie', "Université d'Artois", 'Centrale Lille']
Laboratory
['Institut des Sciences Chimiques de Rennes', 'Unité de Catalyse et Chimie du Solide - UMR 8181']
Published in
France

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