融盐包裹法合成球形正极材料LiNi_(0.7)Co_(0.2)Al_(0.1)O_2(英文)  

Synthesis of Spherical Cathode Material LiNi_(0.7)Co_(0.2)Al_(0.1)O_2 by Melting-Salts Coating Process

作　　者：叶乃清[1] 彭运吉[2] 田华[2] 

机构地区：[1]有色金属及材料加工新技术教育部重点实验室,广西桂林541004 [2]桂林工学院材料与化学工程系,广西桂林541004

出　　处：《中山大学学报（自然科学版）》2007年第B06期95-96,99,共3页Acta Scientiarum Naturalium Universitatis Sunyatseni

基　　金：广西自然科学基金资助项目(0575100);广西教育厅科研资助项目(0420022)

摘　　要：以球形Ni(OH)2为核心原料,Al(NO3)3.9H2O、Co(NO3)2.6H2O和LiNO3为包裹原料,采用融盐包裹法在空气中煅烧合成了单相固溶体LiNi0.7Co0.2Al0.1O2。用XRD研究了合成产物的物相和结构,用SEM研究了合成产物的形貌,用电池性能测试仪研究了合成产物的电化学性能。实验结果表明,合成产物具有α-NaFeO2型层状有序结构、球状形貌和良好的电化学性能。A spherical cathode material LiNi0.7 Co0. 2 Al0.1 O2 was synthesized by melting - salts coating process in air using spherical Ni （OH）2 as core material, AI（ NO3 ）3· 9H2 O, Co（ NO3 ）2 · 6H2O and LiNO3 as coating materials. Th~ crystal structure, morphology and electrochemical performance of the synthesized powder were characterized by XRD, SEM and charge - discharge experiments. The experimental results show that the synthesized powder LiNi0. 7 Co0. 2 Al0.1O2 has the α-NaFeO2 type ordered layered structure, spherical morphology and excellent electrochemical performance.

关 键 词：锂离子电池 球形正极材料 LiNi0.7Co0.2Al0.1O2 融盐包裹法 

分 类 号：TM912.91[电气工程—电力电子与电力传动]