Carbon Nanomaterials for Na–O2 Batteries

Abstract

This chapter summarizes the fundamental and latest research and progress of Sodium–air (Na–O2) batteries, and focuses on the electrochemical reaction mechanisms and various carbon nanomaterials used in Na–O2 battery systems. It explores a brief introduction of the working principles of Na–O2 batteries and the electrochemical reactions of the cathode. The chapter discusses the rational design and optimization of cathode material structure, as well as the challenges and perspectives of Na–O2 batteries. It provides a better understanding of the promising Na–O2 battery system. The energy policies of many nations contain consumption and distribution models dependent on nonrenewable fossil fuels. In addition to the role of providing active sites for Oxygen Reduction Reaction/Oxygen Evolution Reaction and the channels for sodium ion and oxygen transportation, void spaces in the air electrode are a vital requirement for the accommodation of discharge products.