【摘要】 采用球形Ni(OH)2和LiNO3、CoO、Al(OH)3为原料,在空气气氛条件下700℃恒温8h,合成了锂离子电池正极材料LiNixCo1-xO2和LiNi0.75Al0.25O2。X射线衍射分析表明合成的材料粉末结晶良好,具有规整的α NaFeO2层状结构;SEM分析表明粉末颗粒呈球形,粒径约为7μm。充放电测试表明:合成的LiNixCo1-xO2正极材料的充电比容量为160mAh/g,放电比容量为152mAh/g;LiNi0.75Al0.25O2正极材料的充电比容量为140mAh/g,放电比容量为129mAh/g;这两种正极材料具有优良的电化学性能。更多还原

【Abstract】 The LiNixCo1-xO2 powders and LiNi0.75Al0.25O2 powders were synthesized by sintering spherical Ni(OH)2, LiNO3, CoO and Al(OH)3 in air at 700 ℃ for 8 h. XRD patterns show that the powders are highly crystallized LiNixCo1-xO2 and LiNi0.75AlO0.25O2 with order αNaFeO2 layer structure. SEM photographs show that the powders are spherical dispersed particulate with the particle size of approximately 7 μm. Electrochemical test proves that the cathode material has excellent electrochemical performance. The LiNixCo1-xO2 material shows a high initial charge capacity of 160 mAh·g-1 and discharge capacity of 152 mAh·g-1, and the LiNi0.75AlO0.25O2 shows a high initial charge capacity of 140 mAh·g-1 and discharge capacity of 152 mAh·g-1.更多还原