Sulfonate-Based Triazine Multiple-Electron Anolyte for Aqueous Organic Flow Batteries

Sulfonate-Based Triazine Multiple-Electron Anolyte for Aqueous Organic Flow Batteries

A new highly soluble triazine derivative (SPr) 3 4TpyTz showing three reversible redox processes with fast kinetics and high diffusion coefficients has been synthesized using an efficient, low-cost, and straightforward synthetic route. Concentrated single cell tests and DFT studies reveal a tendency...

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Veröffentlicht in:ACS applied materials & interfaces 2023-08, Vol.15 (30), p.36242-36249
Hauptverfasser: Asenjo-Pascual, Juan, Wiberg, Cedrik, Shahsavan, Mahsa, Salmeron-Sanchez, Ivan, Mauleon, Pablo, Aviles Moreno, Juan Ramon, Ocon, Pilar, Peljo, Pekka
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container_end_page 36249
container_issue 30
container_start_page 36242
container_title ACS applied materials & interfaces
container_volume 15
creator Asenjo-Pascual, Juan
Wiberg, Cedrik
Shahsavan, Mahsa
Salmeron-Sanchez, Ivan
Mauleon, Pablo
Aviles Moreno, Juan Ramon
Ocon, Pilar
Peljo, Pekka
description A new highly soluble triazine derivative (SPr) 3 4TpyTz showing three reversible redox processes with fast kinetics and high diffusion coefficients has been synthesized using an efficient, low-cost, and straightforward synthetic route. Concentrated single cell tests and DFT studies reveal a tendency of the reduced triazine species to form aggregates which could be avoided by tuning the supporting electrolyte concentration. Under the right conditions, (SPr) 3 4TpyTz shows no capacity decay and good Coulombic, voltage, and energy efficiencies for the storage of two electrons. The storage of further electrons leads to a higher capacity decay and an increase of the electrolyte pH, suggesting the irreversible protonation of the generated species. So, a plausible mechanism has been proposed. A higher concentration of (SPr) 3 4TpyTz shows slightly higher capacity decay and lower efficiencies due to the aggregate formation.
doi_str_mv 10.1021/acsami.3c05850
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title Sulfonate-Based Triazine Multiple-Electron Anolyte for Aqueous Organic Flow Batteries
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