| 5V正极材料LiNi0.5Mn1.5O4的自蔓延燃烧合成 |
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| 引用本文： | 张真,张峥,刘宏基,刘兴泉.5V正极材料LiNi0.5Mn1.5O4的自蔓延燃烧合成[J].电池,2011,41(5):239-242. |
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| 作者姓名： | 张真 张峥 刘宏基 刘兴泉 |
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| 作者单位： | 电子科技大学微电子与固体电子学院,电子薄膜与集成器件国家重点实验室,四川成都610054 |
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| 基金项目： | 国家自然科学基金，电子科技大学杰出人才引进项目，河南省新乡市群力电源材料有限公司与新乡市天力能源材料有限公司项目 |
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| 摘 要： | 用柠檬酸络合辅助的自蔓延燃烧法合成了5V正极材料LiNi0.5 Mn1.5 O4.用XRD、SEM和电化学测试研究了焙烧温度、退火时间对材料的影响.在最佳条件(焙烧温度为820℃、退火时间为24 h)下合成的样品具有完整的尖晶石结构和形貌,具有单一的4.7V平台,在20℃下以0.2C在3.5-5.1V充放电,首次放电比...
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| 关 键 词： | 正极材料 焙烧 退火 柠檬酸络合物 自蔓延燃烧反应 |
Self-propagation combustion synthesis of 5 V cathode material LiNi0.5Mn1.5O4 |
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| ZHANG Zhen,ZHANG Zheng,LIU Hong-ji,LIU Xing-quan.Self-propagation combustion synthesis of 5 V cathode material LiNi0.5Mn1.5O4[J].Battery Bimonthly,2011,41(5):239-242. |
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| Authors: | ZHANG Zhen ZHANG Zheng LIU Hong-ji LIU Xing-quan |
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| Affiliation: | (State Key Laboratory of Electronic Thin Film and Integrated Devices,School of Microelectronics and SolidState Electronics,University of Electronic Science and Technology of China,Chengdu,Sichuan 610054,China) |
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| Abstract: | 5 V cathode material LiNi0.5Mn1.5O4 was synthesized by citric acid assisted self-propagation combustion method.The effects of calcining temperature and annealing time on the material were studied by XRD,SEM and electrochemical tests.The sample synthesized under the optimum condition(calcining temperature was 820 ℃,annealing time was 24 h) had complete spinel structure and morphology,it had a single voltage plateau at 4.7 V.When charged-discharged at 3.5~5.1 V with 0.2 C under 20 ℃,the initial specific discharge capacity was 122.7 mAh/g,the capacity retention was 96.9% at the 20th cycle. |
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| Keywords: | cathode material calcining annealing citric acid complex self-propagation combustion reaction |
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