Solution combustion synthesis of layered LiNi0.5Mn0.5O2 and its characterization as cathode material for lithium-ion cells
Solution combustion synthesis of layered LiNi0.5Mn0.5O2 and its characterization as cathode material for lithium-ion cells
复制标题
DOI：
10.1016/j.jpowsour.2011.08.034
复制
发表时间：
2011-12
影响因子：
9.2
通讯作者：
P. Manikandan;M. Ananth;T. P. Kumar;M. Raju;P. Periasamy;K. Manimaran
中科院分区：
文献类型：
--
作者：
P. Manikandan;M. Ananth;T. P. Kumar;M. Raju;P. Periasamy;K. Manimaran
以苊为燃料，采用溶液燃烧法合成了锂离子电池正极材料LiNi0.5Mn0.5O2。产物的粉末X射线衍射（XRD）图案显示六方晶胞，a=2.8955 nm，c=14.1484 nm。电子显微镜研究表明，颗粒是亚微米级的大小。该产品在0.1C倍率下在2.5至4.6V之间的初始放电容量为161mAhg− 1，可进行50次以上的循环。电化学活性与循环伏安（CV）和电化学阻抗数据证实。该制备方法具有低阳离子混合、亚微米颗粒和相纯度等优点。
LiNi0.5Mn0.5O2, a promising cathode material for lithium-ion batteries, is synthesized by a novel solution-combustion procedure using acenaphthene as a fuel. The powder X-ray diffraction (XRD) pattern of the product shows a hexagonal cell with a=2.8955Å and c=14.1484Å. Electron microscopy investigations indicate that the particles are of sub-micrometer size. The product delivers an initial discharge capacity of 161mAhg−1between 2.5 and 4.6V at a 0.1C rate and could be subjected to more than 50 cycles. The electrochemical activity is corroborated with cyclic voltammetric (CV) and electrochemical impedance data. The preparative procedure presents advantages such as a low cation mixing, sub-micron particles and phase purity.