| 两种不同的化成制度对锂离子电池性能的影响 |
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| 引用本文： | 廖文明,戴永年,姚耀春,孙学磊.两种不同的化成制度对锂离子电池性能的影响[J].中山大学学报(自然科学版),2009,48(Z2). |
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| 作者姓名： | 廖文明 戴永年 姚耀春 孙学磊 |
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| 作者单位： | 昆明理工大学真空冶金国家工程实验室,云南,昆明,650093 |
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| 基金项目： | 昆明理工大学分析测试基金 |
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| 摘 要： | 采用磷酸铁锂作为正极材料,分析两种不同的化成制度对锂离子电池性能的影响.结果显示采用阶梯式化成的锂离子电池正极材料的比容量要比阶梯式化成的比容量高3 mAh/g左右,并且整个电池的充放电效率也要略高.从SEM图,没有发现不同,但是从XPS分析,阶梯式化成后锂离子电池负极CMS表面Li+含量明显要比恒流式化成要高,并且F和P峰明显要比恒流式化成更加复杂.
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| 关 键 词： | 锂离子电池 SEI膜 化成 |
Effects of Two Different Formation Systems on the Performance of Lithium Ion Battery |
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| LIAO Wenming,DAI Yongnian,YAO Yaochun,SUN Xuelei.Effects of Two Different Formation Systems on the Performance of Lithium Ion Battery[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2009,48(Z2). |
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| Authors: | LIAO Wenming DAI Yongnian YAO Yaochun SUN Xuelei |
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| Abstract: | In this paper, we take LiFePO4 as the positive electrode materials, analyze two different formation systems on the perform-anee of lithium ion battery. Results showed that the specific capacity of lithium ion battery charged by the constant current system was higher than that of stepped system about 3 mAh/g, and whole charging and discharging efficiency is slightly also high. From SEM pat-tern, we didn't discover the difference, but in the XPS measure, the Li+ content of CMS surface obtained from lithium-ion battery after stepped formation system were obviously higher than the constant current, and the F and P peaks were obviously more complex than that of the constant current. |
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| Keywords: | LiFePO4 XPS lithium ion battery SEI film LiFePO4 XPS formation |
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