| 固相合成W掺杂LiFePO_4/C及其电化学性能 |
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| 引用本文： | 刘红飞,贾铁昆. 固相合成W掺杂LiFePO_4/C及其电化学性能[J]. 宁夏大学学报(自然科学版), 2011, 32(2): 144-146 |
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| 作者姓名： | 刘红飞 贾铁昆 |
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| 作者单位： | 1. 宁夏大学物理电气信息学院,宁夏银川,750021
2. 洛阳理工学院,材料科学与工程系,河南洛阳471023 |
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| 基金项目： | 国家民委粉体材料与特种陶瓷重点实验室开放基金资助项目; 宁夏高等学校科研基金资助项目(2008) |
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| 摘 要： | 采用一步固相法合成碳包覆W掺杂Li1-xWxFePO4/C.结果表明：合成产物具有完整的橄榄石型LiFePO4晶体结构,颗粒尺寸为2~5μm;当W的掺入量为0.02摩尔分数时具有最好的倍率放电性能和循环性;在0.1 C倍率充放电时具有153.8 mA.h/g的放电比容量;在1 C倍率充放电时,具有135.7 mA.h/g的放电比容量.
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| 关 键 词： | 锂离子电池 磷酸铁锂 正极材料 固相合成法 钨掺杂 |
Electrochemical Properties of Wdoped LiFePO_4/C Prepared by Solid-state Synthesis |
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| Liu Hong fei,Jia Tiekun. Electrochemical Properties of Wdoped LiFePO_4/C Prepared by Solid-state Synthesis[J]. Journal of Ningxia University(Natural Science Edition), 2011, 32(2): 144-146 |
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| Authors: | Liu Hong fei Jia Tiekun |
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| Affiliation: | Liu Hongfei1,Jia Tiekun2(1.School of Physics and Electrical Information Engineering,Ningxia University,Yinchuan 750021,China,2.Department of Materials Science and Engineering,Luoyang Institute of Science and Technology,Luoyang 471023,China) |
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| Abstract: | Li1-xWxFePO4/C is synthesized by the one step solid state reaction.The results show that the products are well crystallized with the particle size of 2-5μm.The optimum dosage of W is 0.02 with best rate performances and cycling stability.Electrochemical tests show that the capacities of Li0.98W0.02FePO4/C reach 153.8mA·h/g at 0.1C rate and 135.7mA·h/g at 1C rate,respectively. |
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| Keywords: | lithium iron phosphate lithium ion batteries cathode materials solid-state synthesis W doping |
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