不同锂源制备及ZnO包覆改性LiNi0.8Co0.1Mn0.1O2正极材料性能研究
Study on Performances of LiNi0.8Co0.1Mn0.1O2 Cathode Materials Prepared from Different Lithium Sources and Coated Modification of ZnO
DOI: 10.12677/MS.2022.124041, PDF,    国家自然科学基金支持
作者: 李奕达, 朱基亮：四川大学材料科学与工程学院，四川 成都
关键词: 锂离子电池正极材料；LiNi0.8Co0.1Mn0.1O2；锂源；氧化锌；包覆改性；Cathode Material of Lithium-Ion Battery； LiNi0.8Co0.1Mn0.1O2； Lithium Source； ZnO； Coated Modification
摘要: 选用氢氧化锂、乙酸锂和碳酸锂三种不同锂源采用共沉淀法制备了三种LiNi0.8Co0.1Mn0.1O2样品材料并对以氢氧化锂为锂源的样品进行ZnO包覆改性。利用X射线粉末衍射仪、场发射扫描电子显微镜、透射电子显微镜、选区电子衍射和X射线能谱元素映射对材料结构和组成进行了表征。将电极材料组装成扣式电池，采用循环伏安、倍率充放电和电化学阻抗测试了三种电极材料的的电化学性能。测试结果表明使用LiOH为锂源制备的LiNi0.8Co0.1Mn0.1O2电化学性能最高，ZnO成功地包覆在了正极材料上并提升了它的循环性能。
Abstract: Three LiNi0.8Co0.1Mn0.1O2 sample materials were prepared by co-precipitation method using three different lithium sources including Lithium hydroxide, lithium acetate and lithium carbonate, and the samples using Lithium hydroxide as lithium source were coated with ZnO. The structure and composition of the materials were characterized by X-ray powder diffractometer, field emission scanning electron microscope, transmission electron microscope, selected area electron diffraction and X-ray energy spectrum element mapping. The electrochemical properties of the three electrode materials were tested by cyclic voltammetry, rate charge-discharge and electrochemical impedance. The results show that the electrochemical performance of LiNi0.8Co0.1Mn0.1O2 prepared with LiOH as lithium source is the highest, and the cycling performance of LiNi0.8Co0.1Mn0.1O2 prepared with ZnO successfully coated on the cathode material is improved.
文章引用：李奕达, 朱基亮. 不同锂源制备及ZnO包覆改性LiNi0.8Co0.1Mn0.1O2正极材料性能研究[J]. 材料科学, 2022, 12(4): 386-395. https://doi.org/10.12677/MS.2022.124041

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