One-step synthesis and improved electrochemical performance of Li(Ni1/3Co1/3Mn1/3)O2 by a modified radiated polymer gel method |
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| Authors: | Jian-Wu Wen Yuan-Cheng Teng Ying Xiong |
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| Affiliation: | a Department of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China
b CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, University of Science and Technology of China, 96 Jinzai Rd, Anhui, Hefei 230026, China |
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| Abstract: | We present the mechanism for the synthesis of a layered Li(Ni1/3Co1/3Mn1/3)O2 compound by a modified radiated gel method. Pure-phase Li(Ni1/3Co1/3Mn1/3)O2 material was achieved when the polymer gel was calcined at 900 °C between 15 and 30 h. The unit cell parameter c decreased, and a varied slightly with increased sintering time. Electrochemical characterization revealed that the optimized sample (25 h) had a high initial discharge capacity of 188 mAh/g (2.8-4.5 V, 20 mA/g), an excellent capacity retention of 90.1% after 30 cycles and a good rate performance. |
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| Keywords: | Lithium-ion battery Li(Ni1/3Co1/3Mn1/3)O2 Discharge capacity Layered structure Radiation |
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