Bifunctional electrolyte additive MgI2for improving cycle life in high-efficiency redox-mediated Li–O2batteries

Author:

Li Wei1,Sheng Chuanchao1,Wang Lei1,Sun Xinyi1,Mu Xiaowei1,He Ping1ORCID,Zhou Haoshen1ORCID

Affiliation:

1. Center of Energy Storage Materials & Technology, College of Engineering and Applied Sciences, Jiangsu Key Laboratory of Artificial Functional Materials, National Laboratory of Solid State Microstructures and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, P. R. China

Abstract

MgI2is used as a bifunctional self-defense redox mediator in dimethyl sulfoxide-based Li–O2batteries, resulting in increased discharge capacity, a lower charge overpotential of roughly 0.60 V, and a longer cycle life of over 400 cycles.

Funder

National Natural Science Foundation of China

National Key Research and Development Program of China

Science and Technology Support Program of Jiangsu Province

China Postdoctoral Science Foundation

Publisher

Royal Society of Chemistry (RSC)

Subject

Materials Chemistry,Metals and Alloys,Surfaces, Coatings and Films,General Chemistry,Ceramics and Composites,Electronic, Optical and Magnetic Materials,Catalysis

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