用液相共沉淀方法得到了锂离子电池正极材料LiNi0.8Co0.18Al0.02 O2.样品的XRD、SEM及电化学性能测试表明:合成的LiNi0.8 Co0.18Al0.02 O2材料结晶良好,具有α-NaFeO2层状结构;晶体表面形貌清晰,粒径大小适中;与LiNiO2相比,材料的循环稳定性得到了较大的改善,充放电30次后循环效率为95.3%.
参考文献
| [1] | Ohzuku T;Ueda A;Nagayama M .Electrochemistry and structural chemistry of LiNiO2 (R3-m) for 4volt secondary lithium cells[J].Journal of the Electrochemical Society,1993,140(07):1862. |
| [2] | Delmas C;Menetrier M;Croguennec L et al.An overview of the Li ( Ni,M) O2 systems:synthesis,structures and properties[J].Electrochimica Acta,1999,45(1-2):243. |
| [3] | DAHN J R;Fuller E W;Obrovac M et al.Thermal stability of LixCoO2 ,LixNiO2 and y-MnO2 and consequences for the safety of H-ion cells[J].Solid State Ionics,1994,69(3-4):265. |
| [4] | 宫杰,王春忠,宗占国,陈岗.LiNi1-xAlxO2（x=0～1.0）固溶体结构的XRD研究[J].高等学校化学学报,2001(12):1984-1986. |
| [5] | 袁荣忠,瞿美臻,于作龙.镍系复合氧化物LiaNi0.78Co0.2Cd0.02O2的合成及电化学性能[J].电化学,2003(02):211-216. |
| [6] | Zhu X J .Study on layered lithium nickel-based oxides as cathode materials for the application of lithium-ion batteries[D].Wuhan:Chem Dept Wuhan Univ,2003. |
| [7] | Zou Z G;Mai L Q;Chen H Y et al.Influence of synthetic conditions of LiNixCo1-x O2 on its structure and electrochemical characterization[J].Materials Science and Technology,2001,9(01):11. |
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