Effect of Glucose on Li1.2Ni0.2Mn0.6O2 Lithium-Rich Manganese Cathode Materials

doi:10.13438/j.cnki.jdzk.2019.03.010

Abstract

Abstract:

The lithium-rich manganese cathode material Li_1.2Ni_0.2Mn_0.6O₂was prepared by sol-gel method.In the early stage of metalion solution preparation，the structure,morphology and electrochemistry of Li_1.2Ni_0.2Mn_0.6O₂were analyzed with addition of x=0,6%,12%,36%,48% glucose(x=glucose quality/metal reagent quality).Addition can significantly increase the material's initial discharge specific capacity.The initial discharge specific capacity of 0.05C increased from 174 mAh/g without added glucose material to 265.9 mAh/g with added glucose x=12%.The rate performance test results show that the addition of glucose can significantly improve the material rate performance.The material with added glucose x=48% has the best rate performance.The initial discharge specific capacity reached 141 mAh/g.After the cycle test of 0.05C,0.1C,0.2C,0.5C,and 1C,the recycling test was performed 30 times for 0.1C,the specific discharge capacity was 110 mAh/g,and the capacity retention rate was 78%.

Key words: Li_1.2Ni_0.2Mn_0.6O₂, glucose, electrochemical performance, magnification

WANG Lei,XIANG Yanhong,LIAO Qijun,TIAN Lin，WU Xianwen,WU Xianming,XIONG Lizhi,HE Zeqiang. Effect of Glucose on Li_1.2Ni_0.2Mn_0.6O₂Lithium-Rich Manganese Cathode Materials[J]. Journal of Jishou University（Natural Sciences Edition), DOI: 10.13438/j.cnki.jdzk.2019.03.010.

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Effect of Glucose on Li_1.2Ni_0.2Mn_0.6O₂Lithium-Rich Manganese Cathode Materials

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