标题：Synthesis of porous AMn2O4(A=Zn, Zn0.5Co0.5, Co) microspheres and their comparative lithium storage performances
作者：Zhao, Chenhao ;Feng, Fan ;Wang, Xinxin ;Liu, Rui ;Zhao, Shiqiang ;Shen, Qiang
作者机构：[Zhao, Chenhao ;Feng, Fan ;Wang, Xinxin ;Liu, Rui ;Zhao, Shiqiang ;Shen, Qiang ] Key Laboratory for Colloid and Interface Chemistry of Education Minis 更多
摘要：Porous AMn2O4(A=Zn, Zn0.5Co0.5, Co) microspheres have been prepared through a carbonate co-precipitation and subsequent heat treatment at 600°C. X-ray diffraction (XRD) patterns and scanning electron microscope (SEM) images reveal that, the porous AMn2O4microspheres with hausmannite (Mn3O4) structure are composed of well-defined primary nanoparticles, and these nanoparticles have the size of 30-100nm. As lithium-ion battery anodes, the electrochemical properties of porous AMn2O4microspheres are determined by their chemical compositions. The porous ZnMn2O4microspheres can retain a discharge capacity of 698.8mAhg-1after 50 charge-discharge cycles, which is much better than the other two oxides. The CoMn2O4shows the highest discharge potential among three samples. Interestingly, the Zn0.5Co0.5Mn2O4inherits the shortage of CoMn2O4and ZnMn2O4, and its cycling stability is the worst. © 2014 Elsevier B.V.