A1 Refereed original research article in a scientific journal
Sulfonate-Based Triazine Multiple-Electron Anolyte for Aqueous Organic Flow Batteries
Authors: Asenjo-Pascual Juan, Wiberg Cedrik, Shahsavan Mahsa, Salmeron-Sanchez Ivan, Mauleon Pablo, Aviles Moreno Juan Ramon, Ocon Pilar, Peljo Pekka
Publisher: AMER CHEMICAL SOC
Publication year: 2023
Journal: ACS Applied Materials and Interfaces
Journal name in source: ACS APPLIED MATERIALS & INTERFACES
Journal acronym: ACS APPL MATER INTER
Volume: 15
Issue: 30
First page : 36242
Last page: 36249
Number of pages: 8
ISSN: 1944-8244
eISSN: 1944-8252
DOI: https://doi.org/10.1021/acsami.3c05850
Web address : https://doi.org/10.1021/acsami.3c05850
Self-archived copy’s web address: https://research.utu.fi/converis/portal/detail/Publication/180691030
A new highly soluble triazine derivative (SPr)34TpyTz showing three reversibleredox processes with fast kinetics and high diffusion coefficientshas been synthesized using an efficient, low-cost, and straightforwardsynthetic route. Concentrated single cell tests and DFT studies reveala tendency of the reduced triazine species to form aggregates whichcould be avoided by tuning the supporting electrolyte concentration.Under the right conditions, (SPr)34TpyTz shows no capacity decay and good Coulombic, voltage,and energy efficiencies for the storage of two electrons. The storageof further electrons leads to a higher capacity decay and an increaseof the electrolyte pH, suggesting the irreversible protonation ofthe generated species. So, a plausible mechanism has been proposed.A higher concentration of (SPr)34TpyTz shows slightly higher capacity decay and lowerefficiencies due to the aggregate formation.
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