Lithium-oxygen battery is a metal-air battery using lithium as the negative electrode, oxygen in the air as the positive electrode reactant. Because it has high theoretical specific energy and environmentally friendly advantages, the lithium-oxygen battery has been studied in recent years. In this work, it shows the latest research progress of key technology for lithium-oxygen battery, including positive electrode materials, catalysts, electrolyte, negative electrode and structure of battery. And on this basis, we outlook its future development, providing new ideas and methods for the research of other metal-air battery.

Contents
1 Introduction
2 Working principle of lithium-oxygen battery
3 Positive electrode
3.1 Carbon material
3.2 Composite material
3.3 Non-carbon material
3.4 Coating
4 Catalyst of positive electrode
5 Electrolyte
6 Negative electrode
7 Conclusion and outlook