دورية أكاديمية
Insights into the LiI Redox Mediation in Aprotic Li–O 2 Batteries: Solvation Effects and Singlet Oxygen Evolution
| العنوان: | Insights into the LiI Redox Mediation in Aprotic Li–O 2 Batteries: Solvation Effects and Singlet Oxygen Evolution |
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| المؤلفون: | Angelica Petrongari, Vanessa Piacentini, Adriano Pierini, Paola Fattibene, Cinzia De Angelis, Enrico Bodo, Sergio Brutti |
| سنة النشر: | 2023 |
| مصطلحات موضوعية: | Biochemistry, Molecular Biology, Evolutionary Biology, Infectious Diseases, Space Science, Biological Sciences not elsewhere classified, Chemical Sciences not elsewhere classified, lithium iodide rm, highly promising next, low polarity solvent, different solvent environments, oxygen evolution reaction, requires large overpotentials, based electrolytes leads, aprotic li –, 2 , 1 , lii redox mediation, based electrolytes, redox mediation, polar solvent, singlet oxygen, redox mediators, strong interplay, results show, practical implementation, parasitic reactions, dimethyl sulfoxide, cycle life, challenges lies |
| الوصف: | Lithium–oxygen aprotic batteries (aLOBs) are highly promising next-generation secondary batteries due to their high theoretical energy density. However, the practical implementation of these batteries is hindered by parasitic reactions that negatively impact their reversibility and cycle life. One of the challenges lies in the oxidation of Li 2 O 2 , which requires large overpotentials if not catalyzed. To address this issue, redox mediators (RMs) have been proposed to reduce the oxygen evolution reaction (OER) overpotentials. In this study, we focus on a lithium iodide RM and investigate its role on the degradation chemistry and the release of singlet oxygen in aLOBs, in different solvent environments. Specifically, we compare the impact of a polar solvent, dimethyl sulfoxide (DMSO), and a low polarity solvent, tetraglyme (G4). We demonstrate a strong interplay between solvation, degradation, and redox mediation in OER by LiI in aLOBs. The results show that LiI in DMSO-based electrolytes leads to extensive degradation and to 1 O 2 release, affecting the cell performance, while in G4-based electrolytes, the release of 1 O 2 appears to be suppressed, resulting in better cyclability. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | unknown |
| العلاقة: | https://figshare.com/articles/journal_contribution/Insights_into_the_LiI_Redox_Mediation_in_Aprotic_Li_O_sub_2_sub_Batteries_Solvation_Effects_and_Singlet_Oxygen_Evolution/24800490Test |
| DOI: | 10.1021/acsami.3c12330.s001 |
| الإتاحة: | https://doi.org/10.1021/acsami.3c12330.s001Test https://figshare.com/articles/journal_contribution/Insights_into_the_LiI_Redox_Mediation_in_Aprotic_Li_O_sub_2_sub_Batteries_Solvation_Effects_and_Singlet_Oxygen_Evolution/24800490Test |
| حقوق: | CC BY-NC 4.0 |
| رقم الانضمام: | edsbas.4612140C |
| قاعدة البيانات: | BASE |
| DOI: | 10.1021/acsami.3c12330.s001 |
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