Electrochemical behavior of spherical LiNi1/3Co1/3Mn1/3O2 as cathode material for aqueous rechargeable lithium batteries |
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| Authors: | Li Liu Fanghua Tian Xingyan Wang Zhenhua Yang Quanqi Chen Xianyou Wang |
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| Institution: | (1) School of Chemistry, Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, Key Laboratory of Materials Design and Preparation Technology of Hunan Province, Xiangtan University, Xiangtan, 411105, China;(2) Faculty of Materials, Optoelectronics and Physics, Xiangtan University, Xiangtan, 411105, China |
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| Abstract: | Spherical LiNi1/3Co1/3Mn1/3O2 powders have been synthesized from co-precipitated spherical metal hydroxide. The electrochemical performances of the LiNi1/3Co1/3Mn1/3O2 electrodes in 1 M LiNO3, 5 M LiNO3, and saturated LiNO3 aqueous electrolytes have been studied using cyclic voltammetry and ac impedance tests in this work. The results show that
LiNi1/3Co1/3Mn1/3O2 electrode in saturated LiNO3 electrolyte exhibits the best electrochemical performance. An aqueous rechargeable lithium battery containing LiNi1/3Co1/3Mn1/3O2 cathode, LiV2.9Ni0.050Mn0.050O8 anode, and saturated LiNO3 electrolyte is fabricated. The battery delivers an initial capacity of 98.2 mAh g−1 and keeps a capacity of 63.9 mAh g−1 after 50 cycles at a rate of 0.5 C (278 mA g−1 was assumed to be 1 C rate). |
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