| LiFePO4/C电池循环性能和安全性能的研究 |
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| 引用本文： | 武雪峰,王振波. LiFePO4/C电池循环性能和安全性能的研究[J]. 电池工业, 2010, 15(3): 156-159 |
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| 作者姓名： | 武雪峰 王振波 |
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| 作者单位： | 哈尔滨工业大学化工学院,黑龙江,哈尔滨,150001;哈尔滨工业大学化工学院,黑龙江,哈尔滨,150001 |
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| 基金项目： | 国家自然科学基金，教育部留学归国科研启动基金，黑龙江省留学人员科学基金 |
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| 摘 要： | 以磷酸铁锂(LiFePO4/C)为正极活性物质、石墨为负极物质组装成动力锂离子电池。详细研究了该电池的循环性能以及过充电对电池安全性能的影响。对电池充放电容量、循环性能和电压衰减进行测试。研究表明:LiFePO4/C电池在常温下具有较好的循环性能,但大电流放电性能欠佳;在低温状态下电池的容量和循环性能明显下降;频繁的过充电会导致LiFePO4/C电池的循环性能降低;大电流、高电压过充电对电池的性能影响最大,电池存在的安全隐患最多。以3C2 A电流过充电时对电池的影响最大;使用LiFePO4/C材料做为动力电池的正极材料时须避免过充电现象发生。
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| 关 键 词： | 锂离子电池 低温性能 过充 循环性能 LiFePO4 |
Investigation on cyclic and safety performance of LiFePO_4/C battery |
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| WU Xue-feng,WANG Zhen-bo. Investigation on cyclic and safety performance of LiFePO_4/C battery[J]. Chinese Battery Industry, 2010, 15(3): 156-159 |
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| Authors: | WU Xue-feng WANG Zhen-bo |
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| Affiliation: | WU Xue-feng,WANG Zhen-bo(School of Chemical Engineering , Technology,Harbin Institute of Technology,Harbin,Heilongjiang 150001,China) |
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| Abstract: | Cyclic performance and effect of overcharge on safety performance of Li-ion battery prepared with LiFePO4/C as anode material and graphite as cathode material were studied in this paper.Chargedischarge capacity,cyclic performance and voltage decay were tested.The results showed that the cyclic performance of LiFePO4/C was relatively good at room temperature.However,its high-current discharge performance was poor.Its cyclic performance evidently deteriorated at low-temperature and its capacity markedly decli... |
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| Keywords: | LiFePO4 |
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