Strategies with Functional Materials in Tackling Instability Challenges of Non-aqueous Lithium-Oxyge

• 作 者: WANG Huanfeng LI Jingjing LI Fei GUAN Dehui WANG Xiaoxue SU Wenhua XU Jijing
• 机 构: College of Chemical and Food,Zhengzhou University of Technology,Zhengzhou 450044,P.R.China;State Key
• 出 处: 高等学校化学研究（英文版）
• 发表日期: 2021年2期
• 关键词: Functional material Instability challenge Parasitic reac-tion Non-aqueous Li-O2

The instabilities of the battery including cathode corro-sion/passivation,shuttling effect of the redox mediators,Li anode corrosion,and electrolyte decomposition are major barriers toward the practical implementation of lithium-oxygen(Li-O2)batteries.Functional materials offer great potential in high per-formance Li-O2 batteries owing to their functional tailorability of chemical modification for alleviating side reactions and improving catalysis activity,well-defined properties for discharge products storage,and fast mass and electron transfer paths.In this review,instability problems of non-aqueous Li-O2 batteries and recent stu-dies related to the functional materials in tackling the instability is-sues from rational cathode construction,inhibition of redox media-tors(RMs)shuttling,anode protection and novel electrolyte design are illustrated.Future research directions to overcome the critical issues are also proposed for this promising battery technology.The instability issues and the related strategies with functional materials based on the comprehensive consideration of all battery compo-nents proposed in this review provide the systematic,deep under-standing and rational design of functional materials for Li-O2 batte-ries,which is beneficial to achieving the practical Li-O2 batteries.