锂电池LiNi_(1/3)Zn_xCo_(1/3-x)Mn_(1/3)O_2(0.000≤x≤0.133)阴极材料结构与电化学性能（英文）

Structure and Electrochemical Performance of Cathodes Material for Lithiumion Batteries LiNi_(1/3)Zn_xCo_(1/3-x)Mn_(1/3)O_2(0.000≤x≤0.133)

以MnO_2微球为模板,用Zn掺杂三元系LiNi_(1/3)Co_(1/3)Mn_(1/3)O_2材料,合成LiNi_(1/3)Zn_xCo_(1/3-x)Mn_(1/3)O_2(0.000≤x≤0.133)微球材料。利用RIETAN-FP软件对样品进行XRD结构解析,得出样品具有α-NaFeO_2层状结构。然后组成锂离子纽扣电池,在2.5V到4.5V的电压范围内进行电化学性能测试。通过测试,发现随着锌掺杂浓度的增加,锂电池的循环性能和倍率性能同材料的晶格参数具有相似的变化趋势。掺杂量x=0.133的样品比其它样品具有更好的电化学性能,与没掺杂锌的材料比较,其锂电池比容量增加了10.7%。

LiNi_(1/3)Zn_xCo_(1/3-x)Mn_(1/3)O_2(0.000≤x ≤0.133)microspheres are synthesized using MnO_2 microspheres both as a self-template and Mn source.The XRD patterns of LiNi_(1/3)Zn_xCo_(1/3-x)Mn_(1/3)O_2 were analyzed by the RIETAN-FP program,and the obtained samples have a layeredα-NaFeO_2 structure.Electrochemical performances were carried out between 2.5Vand 4.5V.The behavior of the lattice parameters is consistent with Cycling performance and rate performance change with increase of Zn-doped.Compared with the others,the sample of x=0.133 exhibits a relatively superior electrochemical performance.The specific capacity of x=0.133 was increased by 10.7%than no-doped.