Characterization and electrochemical performance of Manganese oxide with carbon nano tubes as negative electrode for lithium batteries

摘要

Different ratios of Mn3O4/CNT(carbon nano tubes)samples were prepared by ultrasonic and hydrothermal reactions.The added ratios of CNT: Mn wt./wt.were 0,5,15,25,35 and 50%.The phases of the samples were identified by X-ray diffraction(XRD).The particle morphology was studied with a field emission scanning electron microscope(FESEM).The lowest charge transfer resistance,R_(ct)was 19.18 Ω with cell of Mn3O4/35% CNT.For Li/Mn3O4-35% CNT cell,the specific discharge capacity was about 688 mAhg~(-1)after 100 cycles,which was the highest value among the other cells at discharge current density 0.02Acm~(-2).