Synthesis and electrochemical performance of LiNi0.5Mn1.5O4 spinel compound |
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| Authors: | G.Q. Liu Qilu W. Li |
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| Affiliation: | a Department of Applied Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, People's Republic of China
b Department of Electronic Engineering, Beijing Institute of Technology, Beijing 100081, People's Republic of China |
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| Abstract: | Spinel compound LiNi0.5Mn1.5O4 was synthesized by a chemical wet method. Mn(NO3)2, Ni(NO3)2·6H2O, NH4HCO3 and LiOH·H2O were used as the starting materials. At first, Mn(NO3)2 and Ni(NO3)2·6H2O reacted with NH4HCO3 to produce a precursor, then the precursor reacted with LiOH·H2O to synthesize product LiNi0.5Mn1.5O4. The product showed a single spinel phase under appropriate calcination conditions, and exhibited a high voltage plateau at about 4.6-4.8 V in the charge/discharge process. The LiNi0.5Mn1.5O4 had a discharge specific capacity of 118 mAh/g at about 4.6 V and 126 mAh/g in total in the first cycle at a discharge current density of 2 mA/cm2. After 50 cycles, the total discharge capacity was above 118 mAh/g. |
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| Keywords: | LiNi0.5Mn1.5O4 spinel Cathode Li-ion battery Synthesis Electrochemical properties |
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