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学科主题: Engineering (provided by Thomson Reuters)
题名: 镍钴酸锂的空气气氛下高温固相合成
其他题名: study on synthesis of lini0.7co0.3o2 by high temperature solid phase method in atmosphere
作者: 郭红兵; 康雪雅; 王天雕; 韩英
关键词: 无机非金属材料 ; 锂离子电池 ; 正极材料 ; 锂镍钴氧化物
刊名: 电子元件与材料
发表日期: 2005
DOI: 10.14106/j.cnki.1001-2028.2005.06.006
卷: 24, 期:6, 页:18-20
资助者: 新疆高技术研究计划项目
摘要: 通过改进马弗炉结构,在空气气氛下合成了LiNi0.7Co0.3O2锂离子二次电池正极材料。利用XRD、SEM和循环充放电测试等手段,研究了材料结构与电化学性能之间的关系。实验电池以C/3的电流倍率在2.7~4.2V进行恒流充放电循环,电池首次充电比容量与放电比容量分别为181mAh/g和157mAh/g,库仑效率为86.7%。经过15次循环后,放电比容量趋于稳定,库仑效率保持在98%以上。循环40次,放电比容量为122mAh/g。
英文摘要: Using converting the air in muffle sufficiently, LiNio.7Coo.3O2 lithium-ion battery anode materials were synthesized by solid state reaction in air condition. The relationship between material structure and electrochemicat properties were characterized by means of X-ray diffraction (XRD), scanning electron microscope (SEM) and charge-discharge studies. The experiment cells were charged at constant current (C/3) to 4.2 V, after a rest period of 2 min, cells were discharged to 2.7 V at the same constant current (C/3). The specific charge and discharge capacity of the first circle are 181 mAh/g and 157 mAh/g, respectively. And its coulombic efficiency is 86.7%. After the fifteen cycle, the specific discharge capacity gets stably, and the coulombic efficiency of each cycle is over 98%, the specific discharge capacity retains 122 mAh/g in the fortieth cycle.
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内容类型: 期刊论文
URI标识: http://ir.xjipc.cas.cn/handle/365002/2137
Appears in Collections:材料物理与化学研究室_期刊论文

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作者单位: 中国科学院新疆理化技术研究所;中国科学院研究生院

Recommended Citation:
郭红兵,康雪雅,王天雕,等. 镍钴酸锂的空气气氛下高温固相合成[J]. 电子元件与材料,2005,24(6):18-20.
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