镍源和锰源对LiNi_(0.5)Mn_(1.5)O_(4)材料性能的影响  

Effects of Nickel Source and Manganese Source on the Properties of LiNi_(0.5)Mn_(1.5)O_(4)

作　　者：邵忠财[1] 秦仙仙 邵鸿媚 SHAO Zhongcai;QIN Xianxian;SHAO Hongmei(Shenyang Ligong University,Shenyang 110159,China)

机构地区：[1]沈阳理工大学环境与化学工程学院,沈阳110159

出　　处：《沈阳理工大学学报》2022年第4期32-36,48,共6页Journal of Shenyang Ligong University

基　　金：国家自然科学基金资助项目(52004165)。

摘　　要：以不同的镍源和锰源采用共沉淀法制备LiNi_(0.5)Mn_(1.5)O_(4)正极材料,利用X射线衍射(XRD)、扫描电子显微镜(SEM)和电化学测试等手段,对制备的LiNi_(0.5)Mn_(1.5)O_(4)材料进行表征和分析。结果表明:以硫酸镍和硫酸锰为原料制得LiNi_(0.5)Mn_(1.5)O_(4)材料的XRD谱图没有杂质峰,SEM图像显示颗粒细小且分散均匀,电化学测试显示在0.2C下首次放电比容量为115.83 m Ah/g,相比于其他镍源和锰源制备的LiNi_(0.5)Mn_(1.5)O_(4)材料,具有更优的电化学性能。In this paper,LiNi_(0.5)Mn_(1.5)O_(4)cathode materials were prepared by co-precipitation method with different nickel sources and manganese sources.The prepared LiNi_(0.5)Mn_(1.5)O_(4)ma-terials were characterized and analyzed by means of X-ray diffraction(XRD),scanning elec-tron microscopy(SEM)and electrochemical tests.The results show that the XRD pattern of the LiNi_(0.5)Mn_(1.5)O_(4)material obtained from nickel sulfate and manganese sulfate has no impurity peaks.The SEM image shows that the particles are fine and uniformly dispersed.The electro-chemical test shows that the first discharge specific capacity at 0.2C is 115.83mAh/g,and compared with the LiNi_(0.5)Mn_(1.5)O_(4)materials prepared from other nickel sources and manganese sources,it has better electrochemical performance.

关 键 词：锂离子电池 正极材料 镍锰酸锂 共沉淀法 

分 类 号：TQ152[化学工程—电化学工业]