A hierarchical architecture of Fe/Co/Ni-doped carbon nanotubes/nanospheres grafted on graphene as advanced bifunctional electrocatalyst for Zn-Air batteries

Xing Chen, Di Chen, Guofu Li, Chong Gong, Yingjie Chen, Qian Zhang, Jing Sui （Beijing Normal University）， my correct affiliation is beijing normal university, not Qingdao University of Science and Technology, please correct the current affiliation. Thank you, Hongzhou Dong, Jianhua Yu, Liyan Yu, Lifeng Dong