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电化学(中英文) ›› 2006, Vol. 12 ›› Issue (3): 275-278. 

• 研究论文 • 上一篇    下一篇

煅烧温度对锂离子正极材料Li[Ni_(0.475)Mn_(0.475)Co_(0.05)]O_2结构和电化学性能的影响

王丽琴;焦丽芳;袁华堂;王永梅;   

  1. 南开大学新能源材料化学研究所,南开大学新能源材料化学研究所,南开大学新能源材料化学研究所,南开大学新能源材料化学研究所 天津300071,天津300071,天津300071,天津300071
  • 收稿日期:2006-08-28 修回日期:2006-08-28 出版日期:2006-08-28 发布日期:2006-08-28

Calcined Temperatures Influence on Synthesis and Electrochemistry Charactarization of Li[Ni_(0.475)Mn_(0.475)Co_(0.05)]O_(2) for Li-ion Batteries

WANG Li-qin,JIAO Li-fang,YUAN Hua-tang~   

  1. (*),WANG Yong-mei(Institute of New Energy Material Chemistry,Nankai University,Tianjin 300071,China
  • Received:2006-08-28 Revised:2006-08-28 Published:2006-08-28 Online:2006-08-28

摘要: 应用高温固相合成法制备L i[N i0.475Mn0.475Co0.05]O2.XRD,SEM,循环伏安及充放电容量测试表明,在800℃下煅烧合成的样品具有较高的嵌锂容量和良好的循环稳定性,如在20 mA/g和2.3~4.6 V的电压范围内,其首次放电比容量为178.8 mAh/g,循环30周后放电比容量仍能达到150.2 mAh/g,容量损失16.0%.

关键词: 锂电池, 正极材料, Li[Ni0.475Mn0.475Co0.05]O2, 高温固相法

Abstract: Layered Li[Ni_(0.475)Mn_(0.475)Co_(0.05)]O_(2) materials have been prepared by a solid-state pyrolysis method.Experiments of XRD,SEM,cyclic voltammetry and charge/discharge cycling were carried out.It can be learned that when calclined at 800 ℃,the sample showed the highest first discharge capacity of 178.8 mAh·g~(-1) at a current density of 20 mA/g in the voltage range 2.3~4.6 V.

Key words: Li battery, Cathode material, Li[Ni_(0.475)Mn_(0.475)Co_(0.05)]O_(2), Solid-state pyrolysis

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