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Updated: Sep 23, 2025

Protocol of Electrochemical Test and Characterization of Aprotic Li-O2 Battery
Published on: July 12, 2016
Redox mediators for high-performance lithium-oxygen batteries
Yaying Dou1, Zhaojun Xie2, Yingjin Wei3
1Engineering Research Center of Advanced Functional Material Manufacturing of Ministry of Education, School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, China.
Abstract:
Aprotic lithium-oxygen (Li-O2) batteries are receiving intense research interest by virtue of their ultra-high theoretical specific energy. However, current Li-O2 batteries are suffering from severe barriers, such as sluggish reaction kinetics and undesired parasitic reactions. Recently, molecular catalysts, i.e. redox mediators (RMs), have been explored to catalyse the oxygen electrochemistry in Li-O2 batteries and are regarded as an advanced solution. To fully unlock the capability of Li-O2 batteries, an in-depth understanding of the catalytic mechanisms of RMs is necessary. In this review, we summarize the working principles of RMs and their selection criteria, highlight the recent significant progress of RMs and discuss the critical scientific and technical challenges on the design of efficient RMs for next-generation Li-O2 batteries.
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