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Synthesis and electrochemical performance of LiNi_(0.6)Co_(0.2)Mn_(0.2)O_2 as a concentration-gradient cathode material for lithium batteries 被引量:3

Synthesis and electrochemical performance of LiNi_(0.6)Co_(0.2)Mn_(0.2)O_2 as a concentration-gradient cathode material for lithium batteries
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摘要 A well-ordered and spherical LiNi0.6Co0.2Mn0.2O2 cathode material was successfully synthesized from Ni and Mn concentration-gradient precursors via co-precipitation. The crystal structure, morphology and electrochemical properties of LiNi0.6Co0.2Mn0.2O2 were characterized by X-ray diffraction, scanning electron microscopy, energy-dispersive spectroscopy, and charge-discharge tests. The material delivered an initial discharge capacity of 174.3 mAh/g at 180 mA/g (1 C rate) between 2.8 and 4.3 V and more than 93.1% of that was retained after 100 cycles. In addition, it also exhibited excellent rate capability, high cut-off voltage and temperature performance. A well-ordered and spherical LiNi0.6Co0.2Mn0.2O2 cathode material was successfully synthesized from Ni and Mn concentration-gradient precursors via co-precipitation. The crystal structure, morphology and electrochemical properties of LiNi0.6Co0.2Mn0.2O2 were characterized by X-ray diffraction, scanning electron microscopy, energy-dispersive spectroscopy, and charge-discharge tests. The material delivered an initial discharge capacity of 174.3 mAh/g at 180 mA/g (1 C rate) between 2.8 and 4.3 V and more than 93.1% of that was retained after 100 cycles. In addition, it also exhibited excellent rate capability, high cut-off voltage and temperature performance.
出处 《Chinese Chemical Letters》 SCIE CAS CSCD 2014年第6期883-886,共4页 中国化学快报(英文版)
关键词 Lithium secondary batterie sLiNi0.6Co0.2Mn0.2O2 Concentration-gradient Electrochemical performance Lithium secondary batterie sLiNi0.6Co0.2Mn0.2O2 Concentration-gradient Electrochemical performance
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