Synthesis And Electrochemical Properties Of A New Material LiM(M=Ag(or)Re)_xMn_2-xO₄ For Lithium Secondary Batteries

With the development of electronic communication enterprise swift violent, the demand fastly grow for the electronic information time to moves of the power source day by day. Because the lithium ion battery has the high voltage, the high-capacity and so on the most important excellence, also have a long cycling life,a high charge-discharge rate and acceptable environmental impact etc , enable it have the broad applied prospect at the portable electronic installation,the electric automobile,the medical instrument,the spatial technology, the national defense war industry and so on in the future, Now ,it's becomes research focal point which aroused widely pays attention to by the domestic and foreign investigator for batteries in recent years.The Li/ LiAg_xMn_2-xO₄ cell were investigated by electrochemistry property,the result indicate we obtained the good initial charge/discharge capacity micron level LiAg_xMn_2-xO₄ (00.02Mn_1.98O₄ charge/discharge capacity is 115 mA.h/g, the charge/discharge efficiency is 100%.The Li/ LiAg_0.02Mn_1.98O₄ cell were investigated by cyclic voltammetry technique. It was seen that two couples of redox peaks at 4.2256V/4.0321V and 4.0844V/3.8883V, which indicate the two stages during both intercalation and deintercalation of lithium ions, became more clearly under slower cyclic voltammetries (for example, at scanning speed of 0.1mV/s). moreover, the difference of voltage is small.The Li/LiAg_0.02Mn_1.98O₄ cell were investigated by XRD,SEM,TEM,AFM, EDS and so on, the TEM result indicate this material particulate size are small, furthermore distributing uniformity, the appearance is neat.The average particulate size arel-2μm.meanwhile, the small particle size distributionis advantageous in reduces...