Tan Qiwei, Li Ping*, Han Kun, Liu Zhiwei, Li Yang, Zhao Wang, He Donglin, An Fuqiang, Qin Mingli, Qu Xuanhui*. Chemically bubbled hollow FexO nanospheres anchored on 3D N-doped few-layer graphene architecture as a performance-enhanced anode material for potassium-ion batteries. Journal of Materials Chemistry A, 2019, 7, 744-754.