ZnMn_2-x （Fe,Co,Ni）_xO₄ （X=0,0.1,0.2,0.4） Spinel Type Metal-oxide As Anode Material For Lithum-ion Batteries

With the development of humarr society, research development and application of new energy materials are also more and more important. The lithium-ion battery with high voltage、small size、high specific capacity、good charge-discharge cycle performance、non-polluting、long cycle life advantages and began gradually become the main direction of the development of energy storage materials. ZnMn2O4 anode material for lithium ion batteries have a higher initial discharge capacity and relatively stable electrochemical cycling properties, and has broad application prospects. However, battery charging and discharging process will be accompanied by a volume effect generated, thus affecting the electrochemical performance of the battery.This article was prepared by low temperature heat solvent petals ZnMn2O4, explores the heating temperature, holding time, CTMAB content on the influence of product structure and morphology. The B position of Fe, Co, Ni doping element, orthogonal design test by XRD, SEM, EDS analysis, the optimal preparation process, the optimal process several contrasting elements doped electrochemical properties. Experimental results show:1、The heating temperature of 160℃, holding time 48h, CTMAB citrate ratio 1.5:2:00 uniform particle size distribution of the resulting product, without any other impurities, electrochemical performance testing, initial discharge capacity of 991mAh /g,20 cycles after that,the battery discharge capacity of 300mAh/g.2、Fe elements on the electrochemical properties of the materials have significantly improved. When doped iron percentage is 10%, the reaction temperature is 160℃, holding time of 48h, Battery charge and discharge specific capacity has been significantly improved, the initial discharge capacity increased from 991mAh/g to 1395mAh/g, the discharge capacity after 20 cycles ZnMn1.8Fe0.2O4 samples remained at 400mAh/g.3、By lithium-ion batteries cyclic voltammetry and AC impedance analysis, ZnMn1.8Fe0.2O4 with respect to the charging and discharging process ZnMn1.9Co0.1O4 and ZnMn1.9Ni0.1O4 in battery has a small polarization and low electrochemical resistance.