Validating the reversible redox of alkali-ion disulfonyl-methanide as organic positive electrode materials
(2023) Materials Today Chemistry — Vol. 28, p. 101379 (2023)
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- Abstract
- Alkali-ion reservoir organic positive electrode materials with high redox potential emerge as promising candidates for rocking-chair batteries. Despite recent major advances on coordinated Li-enolates and conjugated Li-sulfonamides, alike chemistries remain rare with clearly enormous room to explore and investigate. Herein, we report a new high-voltage redox functionality for alkali-ion storage based on aromatic di-sulfonyl methanide. The versatile paradigm chemistry of di-alkali p-phenylene-bis-diethylsulfonyl methanide (denoted as A2-p-TESO2, where A = Li+, Na+, K+) displays high voltage (3.13 vs Li+/Li), a two-electron reversible redox in both liquid phase and solid phase electrochemistry. A2-p-TESO2 also shows great stability under ambient air conditions in their alkali-ion reservoir states. This work not only suggests a new charge storage mechanism for organic batteries but also highlights the versatility of organic chemistry in designing new redox functionalities for next-generation organic rechargeable batteries.
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Zhang, Y., Apostol, P., Guo, X., Liu, X., Darsi Rambabu, Wang, J., Chen, X., & Vlad, A. (2023). Validating the reversible redox of alkali-ion disulfonyl-methanide as organic positive electrode materials. Materials Today Chemistry, 28, 101379. https://doi.org/10.1016/j.mtchem.2023.101379 (Original work published 2023)