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| 5-硝基苊提高锂离子电池抗过充性能研究 | |
| 引用本文： | 冯祥明,郑金云,李荣富,李中军. 5-硝基苊提高锂离子电池抗过充性能研究[J]. 郑州大学学报(工学版), 2008, 29(4): 58-60 |
| 作者姓名： | 冯祥明 郑金云 李荣富 李中军 |
| 作者单位： | 1. 郑州大学化学系,河南,郑州,450001;河南环宇团有限公司,河南,新乡,453002 2. 郑州大学化学系,河南,郑州,450001 3. 河南环宇团有限公司,河南,新乡,453002 |
| 摘 要： | 采用循环伏安法研究了5-硝基苊在1M LiPF6/EC-DMC电解液中的电化学性质,结果表明5-硝基苊在4.4 V时发生电氧化聚合,扫描电子显微镜观察发现5-硝基苊在电极上发生了聚合.同时LiMn3O4粉末微电极的结果表明在电极电位到达4.25 V之前,5-硝基苊没有对正极材料产生不利影响.LiCoO2电池不同倍率的过充实验结果表明电池过充到约4.4 V时,5-硝基苊发生反应,产生的H+在负极上被还原为H2,增加了电池的内压,因此通过激活防爆网提高了锂离子电池的安全性. |
| 关 键 词： | 5-硝基苊 锂离子电池 电解液添加剂 过充保护 |
Study of 5-Nitroacenaphthene for Improving Li-ion Battery's Tolerance to Overcharge |
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| FENG Xiang-ming , ZHENG Jin-yun , LI Rong-fu , LI Zhong-jun. Study of 5-Nitroacenaphthene for Improving Li-ion Battery's Tolerance to Overcharge[J]. Journal of Zhengzhou University: Eng Sci, 2008, 29(4): 58-60 | |
| Authors: | FENG Xiang-ming ZHENG Jin-yun LI Rong-fu LI Zhong-jun |
| Affiliation: | FENG Xiang-ming1,2,ZHENG Jin-yun1,LI Rong-fu2,LI Zhong-jun1 (1.Department of Chemistry,Zhengzhou University,Zhengzhou 450001,China,2.Huanyu Group Co.Ltd.,Xinxiang 453002,China) |
| Abstract: | To improve the tolerance of Li-ion batteries to overcharge,the cyclic voltammogram was employed to investigate the electrochemical behavior of 5-nitroacenaphthene in 1M LiPF6/EC-DMC.The result demonstrated 5-nitroacenaphthene was found to be electro-oxidized at around 4.4 V(vs Li/Li+) on Pt plate electrode,only to form polymer by scanning electron microscope.And 5-nitroacenaphthene had no the obviously detrimental effect on the positive electrode material until 4.25 V by the LiMn2O4 powder microelectrode.Bu... |
| Keywords: | 5-nitroacenaphthene Li-ion batteries electrolyte additive overcharge protection |
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