Synthesis And Electron Microscopy Study Of The Manganese Molybdate Nanomaterials

The performance of lithium ion batteries is closely related to electrode materials,so the development of new electrode materials and improving the existing electrode materials are two important ways to improve the performance of batteries.Electrode materials of ternary transition metal oxides have a high theoretical specific capacity(800-1200 mA h g-1),and have good cycling performance,so it is a kind of electrode materials with wide application prospect.Moreover,the morphology and size of the materials affect their performance,so it is very important to prepare ternary transition metal oxide nanomaterials.This paper presents a new method of synthesis of manganese molybdate nanomaterials,and the products are studied by electron microscopy,the specific contents are as follows:Manganese molybdate nanosheets sare first synthesized through electron beam(e-beam)irradiation inside a transmission electron microscope.There are two kinds of samples before e-beam irradiation,according to the different contents of Mn and O.After irradiated by the e-beam,Mn2Mo3O8 nanosheets and MoO2 nanoparticles are synthesized through the sample with lower Mn and O contents,while mainly MnxMo3O8 with higher Mn and O contents.Furthermore,the generation of the new hexagonal MnxMo3O8 phase can be ascribed to higher Mn content in the initial reactant,which results in the different stacking of Mn,Mo and O atoms.Meanwhile,the lattice parameters of MnxMo3O8 is determined to be aH2=0.59 nm,cH2=6.24 nm.The results not only provide a new strategy for the synthesis of molybdate nanomaterials by electron beam irradiation,but also facilitate the understanding of manganese molybdate materials.