CAJ | 학술논문

以尿素为沉淀剂，以乙二醇为溶剂，通过溶剂热法制备出多级前躯体Ni0.8Mn0.1Co0.1CO3，通过焙烧该前躯体和LiOH·H2O的混合物制备出高比容量的锂离子正极材料LiNi0.8Mn0.1Co0.1O2。采用XRD、FESEM及恒流充放电测试对材料的结构、形貌和电化学进行表征，结果表明，合成的产物形貌均一，有高结晶度。在0.1 C倍率下，放电比容量为194.6 mAh g-1；当放电倍率提高到2.0 C时，该材料仍然具有78.4mAh g-1的放电比容量，并且该材料在各个倍率下具有良好的稳定性。在1.0 C的放电倍率下，经过50次循环，放电容量保持率为92.5%。
이뇨소위침정제，이을이순위용제，통과용제열법제비출다급전구체Ni0.8Mn0.1Co0.1CO3，통과배소해전구체화LiOH·H2O적혼합물제비출고비용량적리리자정겁재료LiNi0.8Mn0.1Co0.1O2。채용XRD、FESEM급항류충방전측시대재료적결구、형모화전화학진행표정，결과표명，합성적산물형모균일，유고결정도。재0.1 C배솔하，방전비용량위194.6 mAh g-1；당방전배솔제고도2.0 C시，해재료잉연구유78.4mAh g-1적방전비용량，병차해재료재각개배솔하구유량호적은정성。재1.0 C적방전배솔하，경과50차순배，방전용량보지솔위92.5%。
Uniform hierarchical Ni0.8Mn0.1Co0.1CO3 have been synthesized by a solvo-thermal method with CO( NH2 )2 as precipitation. The LiNi0.8Mn0.1Co0.1O2 were then prepared by sintering the mixture of this precursor and LiOH·H2O. The prepared materials were characterized by XRD, FESEM and stable charge and discharge tests. The result indicates that LiNi0.8Mn0.1Co0.1O2 were uniform and high crystalline. The electrochemical performance results indicate it can deliver a discharge capacity of 194.6 mAh g-1 at 0.1 C, even the current density raised to 2.0 C, it can also deliver a discharge capacity of 78.4 mAh g-1. Moreover, the discharge capacities have better stability at different discharge rates. The material delivers a high retained capacity about 93.1% at 0.1 C after 50 cycles.