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本文合成了掺铝富锂材料Li1.2Mn0.543Co0.078Ni0.155Al0.030O2,并使用扫描电镜(SEM)、粉末X射线衍射(XRD)、电感耦合等离子体原子发射光谱(ICP-AES)和拉曼散射光谱(Raman)等观察表征富锂和掺铝富锂材料.结果表明,共沉淀法合成掺铝富锂材料,具有R-3m空间群结构,Al元素进入晶格,未单独成相.电化学性能和非现场XRD测试结果表明,4%(by mole)掺铝富锂电极100周期循环容量保持率83.7%,Al元素掺杂有利于容量的释放,增强了电极富锂材料的结构稳定性,提高了循环性能.
In this paper, Li1.2Mn0.543Co0.078Ni0.155Al0.030O2 aluminum-doped lithium-rich material was synthesized and characterized by scanning electron microscopy (SEM), powder X-ray diffraction (XRD), inductively coupled plasma atomic emission spectrometry Raman, etc. The results show that the coprecipitation synthesis of aluminum-doped lithium-rich material, with R-3m space group structure, Al element into the lattice, not alone into the phase. The electrochemical performance and off-site XRD results show that the cycle capacity retention rate of 100% by mole aluminum-doped lithium-rich electrode is 83.7%, and the doping of Al element facilitates the release of the capacity and enhances the structure of the lithium-rich electrode material Stability, improve the cycle performance.