Li/富锂钒青铜(Li_6V_6O_(15))二次电池正极材料研究  

VANADIUM BRONZE RICH IN LITHIUM AS POSITIVE MATERIAL FOR SECONDARY LITHIUM BATTERY

作　　者：华寿南[1] 姜能座[1] 

机构地区：[1]山东大学化学系,济南250100

出　　处：《应用化学》1992年第5期80-83,共4页Chinese Journal of Applied Chemistry

基　　金：国家自然科学基金

摘　　要：近年来,人们对二次锂电池的正极进行了不少研究。许多过渡金属氧化物或硫化物,如V_6O(13),Li_(1+x)V_3O_8,TiS_2,MoS_2等被认为是较好的正极材料。Pistoia等研究了Li_(1+x)V_3O_8钒青铜的电化学性能得出,当Li浓度高时。Vanadium bronze rich in lithium(Li_6V_5O_(15))was prepared from Li_2CO_3 and V_2O_5 at 680℃. The charge-discharge behaviour of the bronze electrode was investigated in LiAsF_6-PC electrolyte at various current densities.Li/bronze cell showed a high specific capacity, and more than 340Ah/kg was obtained at 0.2mA/cm^2 and 1.0V cut-off voltage. The X-ray diffraction results showed that the structure of the new bronze was stable for lithium insertion.AC impedance data of Li/bronze cell showed that the cathodic process was mainly controlled by diffusion of Li in the bronze.

关 键 词：钒青铜 锂电池 锂插入反应 蓄电池 

分 类 号：O646.5[理学—物理化学]