Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/137782
Title: STUDY OF REDOX FLOW LITHIUM-OXYGEN BATTERY FOR LARGE-SCALE ENERGY STORAGE
Authors: ZHU YUNGUANG
Keywords: lithium-oxygen battery, redox flow battery, oxygen reduction reaction, oxygen evolution reaction, redox mediator, catalysts
Issue Date: 28-Sep-2017
Citation: ZHU YUNGUANG (2017-09-28). STUDY OF REDOX FLOW LITHIUM-OXYGEN BATTERY FOR LARGE-SCALE ENERGY STORAGE. ScholarBank@NUS Repository.
Abstract: Lithium oxygen battery, as a promising next generation energy storage system, has attracted tremendous attention. However, for aprotic systems surface passivation and pore clogging of the cathode occur due to the formation of insulating Li2O2. Although people have tried to use homogeneous catalysts — redox mediators dissolved in the electrolyte to address the above issues, the passivation and clogging problems remain especially at deep discharge. In this thesis, a new battery concept — redox flow lithium oxygen battery (RFLOB) is proposed, which elegantly resolves the surface passivation and pore clogging issues. A series of robust redox mediators as efficient oxygen reduction (ORR) and evolution reaction (OER) catalysts is carefully studied in the RFLOB system. One new battery chemistry is proposed based on Li-O2 battery with LiI and water. Another significant merit of RFLOB is high power density, which is carefully studied base on three ORR redox mediators. The RFLOB provides a new vista to the development of Li-air battery with high round-trip efficiency for practical applications.
URI: http://scholarbank.nus.edu.sg/handle/10635/137782
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