Research On The Li₄Ti₅O₁₂ And MoS₂ Electrode Materials For Lithium-ion Battery

electrode material was successfully synthesized by co-precipitation method using Tetrabutyl orthotita and lithium acetate as raw materials. To get the best electrical property, different factors such as Li-to-Ti ratio, calcining temperature, calcining time and carbon-coated ratio were investigated. The best technical conditions are as follows:Li-to-Ti ratio is 0.84, calcining temperature is 600℃, calcining time is 2h, mC/mLi4Ti5O12 is 1/10. Experimental results demonstrated that the carbon coated material had good electric capability and stability under large electric current.The initial discharge specific capacity was 172.6 mAh/g under the room temperature and 10C charge-discharge rate. Furthermore, after 200 cycles, there was no obvious capacity fade.MoS2 electrode material was prepared by hydrothermal synthesis method under 200℃using sodium molybdate and thiourea. It exhibits the characteristics of big first discharge capacity and large irreversible capacity. The initial discharge specific capacity was 375 mAh/g under the room temperature and 0.1C charge-discharge rate.The physical structure performances and electrical performances of the materials were characterized and tested by XRD,SEM,and Electrical properties testing methods.