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Improving the Electrochemical Performance of a Series of Electrospun LiNi1/3-xCo1/3Mn1/3+xO2 Samples
Yun Zhang,Dawei Gu #,Hongying Jiang,Hui Liu,Lei Wang,Linjiang Shen *
College of Sciences, Nanjing Tech University, Nanjing 211816
*Correspondence author
#Submitted by
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Funding: National Natural Science Foundation of China (No.61306103)
Opened online:10 March 2016
Accepted by: none
Citation: Yun Zhang,Dawei Gu,Hongying Jiang.Improving the Electrochemical Performance of a Series of Electrospun LiNi1/3-xCo1/3Mn1/3+xO2 Samples[OL]. [10 March 2016] http://en.paper.edu.cn/en_releasepaper/content/4679841
 
 
A 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.
Keywords:LiNi1/3-xCo1/3Mn1/3+xO2; Electrospinning; Electrochemical performance
 
 
 

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