| 高密度LiFePO4正极材料的合成与性能 |
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| 引用本文： | 黄新荣,周震涛.高密度LiFePO4正极材料的合成与性能[J].化学工业与工程技术,2009,30(5):12-15. |
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| 作者姓名： | 黄新荣 周震涛 |
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| 作者单位： | 华南理工大学,材料科学与工程学院,广东,广州,510641 |
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| 摘 要： | 以高温固相法制备了高密度的LiFePO4正极材料，利用XRD、SEM、粒度分析、交流阻抗以及充放电测试等方法研究了前驱体Li3PO4和FePO4的比例与LiFePO4的物理性能和电化学性能的关系。其中，在Li3PO4与FePO4物质的量比为3：2时，制备的LiFePO4正极材料振实密度高达1.4g／cm^3，以0.1C放充电时，其首次放电比容量为159.0mA·h／g，体积比容量为222.6A·h／L，循环25次后，容量保持率达94.0％。
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| 关 键 词： | LiFePO4 高密度 FePO4 Li3PO4 |
Synthesis and performance of high density LiFePO4 cathode material |
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| Huang Xinrong,Zhou Zhentao.Synthesis and performance of high density LiFePO4 cathode material[J].Journal of Chemical Industry & Engineering,2009,30(5):12-15. |
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| Authors: | Huang Xinrong Zhou Zhentao |
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| Affiliation: | (College of Materials Science and Engineering, South China University of Technology,Guangzhou 510641, China) |
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| Abstract: | Cathode material LiFePO_4 with high density is synthesized by high- temperature sintering.The relations mol ratio (Li_3PO_4:FePO_4) and physical performance,electrical performance of LiFePO_4 are investigated by XRD,SEM,granularity distributing test,impedance test and charge/discharge test.The obtained LiFePO_4 with high density of 1.4 g/cm~3 is synthesized by Li_3PO_4 and FePO_4 in the mol ratio of 3:2.Its initial discharge specific capacity is 159.0 m A·h/ g,the volume specific capacity is 222.6 A·h/L at 0.1 C,the capacity retention is 94.0%after 25 cycles. |
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| Keywords: | LiFePO4 FePO4 Li3PO4 |
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