【摘要】 以镍、钴、锰的硝酸盐与氢氧化锂为原料,采用共沉淀法制备锂离子蓄电池层状正极材料LiNi1/3Co1/3Mn1/3O2。探讨了以氨水作为络合剂时产物的形貌特征,扫描电子显微镜(SEM)显示此方法制备产物颗粒均匀,粒径大约5!m,振实密度为2.0g/cm3。X射线衍射(XRD)结果表明:产物具有标准的层状"-NaFeO2晶型,为层状嵌锂复合氧化物。电化学测试表明:LiNi1/3Co1/3Mn1/3O2可逆比容量达140～150mAh/g,体积比容量为313Ah/L。更多还原

【Abstract】 Layered LiNi1/3Co1/3Mn1/3O2 used as cathode material for Li-ion battery was synthesized by Ni(NO3)2·6 H2O,Mn-(NO3)2·6 H2O,Co(NO3)2·6 H2O and LiOH as raw material.The LiNi1/3Co1/3Mn1/3O2 samples were prepared by mix hydroxide method.SEM show that the samples with NH4OH as a chelating agent are uniform,its particles are about 5 m,and tap-density is 2.0 g/cm3.XRD indicate that the material could be indexed by a hexagonal-NaFeO2 layer structure.Electrochemical measurements show that reversible capacity was 140-150 mAh/g,specific volumetric capacity reached 284-313 Ah/L.更多还原