With the support by the National Natural Science Foundation of China and the National Key Basic Research Program of China,the research team led by Prof.He Ping (何平) and Zhou Haoshen (周豪慎) at the College of Engineering and Applied Sciences,Nanjing University,designed ruthenium functionalized graphene aerogels (Ru-GAs) with hierarchical and three-dimensional porosity as a free-standing cathode for rechargeable Li-O2 batteries,and clarified the reaction mechanism during charge,which was published in NPGAsia Materials (2016,8:e239).