Reactive Oxygen Species Resistive Redox Mediator in Lithium-Oxygen Batteries

Reactive Oxygen Species Resistive Redox Mediator in Lithium-Oxygen Batteries

© 2025 Wiley‐VCH GmbH.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - (2025) vom: 03. Jan., Seite e2415805
1. Verfasser: Lee, Hyun-Wook (VerfasserIn)
Weitere Verfasser: Hwang, Jiwon, Kim, Ja-Yeong, Morais, Gabriel N, Tang, Katie S, Choi, Myungsoo, Choi, Haeun, Youn, Hong-Bin, Kim, Seoung-Tae, Ha, Jee Ho, Kang, Seok Ju, Chen, Shuming, Suh, Sung-Eun, Kwak, Won-Jin
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2025
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article lithium–oxygen batteries reactive oxygen species redox mediator singlet oxygen superoxide
Beschreibung
Zusammenfassung:© 2025 Wiley‐VCH GmbH.
The utilization of redox mediators (RMs) in lithium-oxygen batteries (LOBs) has underscored their utility in high overpotential during the charging process. Among the currently known RMs, it is exceptionally challenging to identify those with a redox potential capable of attenuating singlet oxygen (1O2) generation while resisting degradation by reactive oxygen species (ROS), such as 1O2 and superoxide (O2 •-). In this context, computational and experimental approaches for rational molecular design have led to the development of 7,7'-bi-7-azabicyclo[2.2.1]heptane (BAC), a newly suggested RM incorporating N-N interconnected aza-bicycles. BAC harnesses the advantages of falling within the potential range that suppresses 1O2 generation, as previously reported N-N embedded non-bicyclic RMs, and effectively defends against ROS-induced degradation due to the incorporation of a novel bicyclic moiety. Unlike the non-bicyclic RMs, which exhibit reduced O2 evolution after exposure to 1O2, BAC maintains consistent O2 profiles during charging, indicating its superior 1O2 resistance and steady redox-catalyst performance in LOBs. This study introduces a precise and rational design strategy for low-molecular-weight RMs, marking a significant step forward in advancing LOB development by improving efficiency, stability, and practical applicability
Beschreibung:Date Revised 03.01.2025
published: Print-Electronic
Citation Status Publisher
ISSN:1521-4095
DOI:10.1002/adma.202415805