Magnetic studies of the carbothermal effect on LiFePO4

Magnetic studies of the carbothermal effect on LiFePO4
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DOI：
10.1002/pssa.200521452
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发表时间：
2006-01
期刊：
physica status solidi (a)
影响因子：
--
通讯作者：
A. Ait-Salah;K. Zaghib;A. Mauger;F. Gendron;C. Julien
A. Ait-Salah;K. Zaghib;A. Mauger;F. Gendron;C. Julien
中科院分区：
其他
文献类型：
--
作者：
A. Ait-Salah;K. Zaghib;A. Mauger;F. Gendron;C. Julien

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通过磁性测量研究了碳包覆对LiFePO 4颗粒性能的影响。磁化实验是检测极低浓度（<1 ppm）铁基杂质的绝佳工具，这些杂质会毒害用作可充电锂离子电池正极材料的磷橄榄石。结果表明，添加5%的碳提取痕量的Fe（III）相，例如Fe 2 P和/或Fe 2 O3。这种碳热效应似乎有利于LiFePO 4材料在锂离子电池中的长期应用。（© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA，魏因海姆）
The effect of carbon coating on the properties of LiFePO4 particles is studied from magnetic measurements. Magnetization experiments are an excellent tool to detect very low concentrations of iron‐based impurities (<1 ppm) which are poisoning the phospho‐olivine used as positive electrode material in rechargeable Li‐ion batteries. The results indicate that addition of 5% carbon withdraws traces of the Fe(III) phase such as Fe2P and/or Fe2O3. This carbothermal effect appears to be beneficial for long‐term application of LiFePO4 materials in Li‐ion batteries. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)