Structural Design of Oxygen Reduction Redox Mediators (ORRMs) Based on Anthraquinone (AQ) for the Li–O2 Battery,ACS Catalysis

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Structural Design of Oxygen Reduction Redox Mediators (ORRMs) Based on Anthraquinone (AQ) for the Li–O2 Battery
ACS Catalysis ( IF 11.3 ) Pub Date : 2020-07-29 , DOI: 10.1021/acscatal.0c01469
Xiang-Bin Han ₁ , Shen Ye ₁

Affiliation

A series of oxygen reduction redox mediators (ORRMs) based on anthraquinone (AQ) has been developed for the lithium–oxygen (Li–O₂) battery on the basis of a strategy to control the reduction potentials of the AQ moiety. It was found that the discharge capacity of the Li–O₂ battery can be significantly improved by introducing electron-withdrawing groups into the AQ moiety, which can positively move the reduction potential of the AQ derivatives. By the introduction of two nitro (NO₂) groups to the AQ moieties, an approximate 45-fold increase in the discharge capacity has been realized with a high discharge potential. Furthermore, we found that the water molecule from the oxygen environment exhibits a dramatic synergistic effect with the ORRM on the discharge capacity of the Li–O₂ battery.

中文翻译：

Li-O ₂电池基于蒽醌（AQ）的氧还原氧化还原介体（ORRM）的结构设计

一系列基于蒽醌（AQ）的氧还原氧化还原介体（ORRM）已基于控制AQ部分还原电势的策略为锂-氧（Li-O ₂）电池开发。发现通过将吸电子基团引入AQ部分可以显着提高Li–O ₂电池的放电容量，这可以积极地移动AQ衍生物的还原电位。通过引入两个硝基（NO ₂）基团到AQ部分，在高放电电位的情况下，已经实现了放电容量的大约45倍的增加。此外，我们发现来自氧气环境的水分子与ORRM对Li–O ₂电池的放电容量表现出显着的协同作用。

更新日期：2020-09-05

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