提高静电纺丝制备一系列LiNi1/3-xCo1/3Mn1/3+xO2样品的电化学性能的方法

series of LiNi1/3-xCo1/3Mn1/3+xO2(x=0, 1/18, 1/15, and 1/12) cathode materials was successfully synthesized via electrospinning. The samples were characterized using X-ray diffraction, scanning electron microscopy, and electrical conductivity measurements. In addition, 2025-type coin cells containing LiNi1/3-xCo1/3Mn1/3+xO2 cathode materials were characterized using cyclic voltammetry and galvanostatic charge/discharge measurements. The Ni-Mn content (x) significantly affected the electrochemical properties of the electrospun samples, although electrospinning did not alter the samples' micromorphologies. The specific capacities, rate performances, cycle stabilities, and conductivities of the LiNi1/3-xCo1/3Mn1/3+xO2(0≤x≤1/15) samples increased with increasing x. The cation mixing of LiNi1/3-xCo1/3Mn1/3+xO2(0≤x≤1/15) was reduced when the Ni content decreased, indicating that the structural stability was enhanced. When x was increased further, the electrochemical performance of LiNi0.25Co0.33Mn0.42O2 was attenuated. The excess x value (x=1/12) in LiNi1/3-xCo1/3Mn1/3+xO2 prepared by electrospinning debases the structure stability possibly.