【作者】 张自禄； 卢嘉春；

【Author】 ZHANG Zi-lu,LU Jia-chun (Northwest Institute of Nuclear Technology,Xi’an 710024,China)

【机构】 西北核技术研究所；

【摘要】 利用LiH₂PO₄的水溶性,将FeC₂O₄和LiH₂PO₄在水介质中球磨,使原料均匀混合,再通过一次焙烧制备了锂离子电池正极材料LiFePO₄。测试结果表明,650℃制备的材料具有最高的放电比容量,0.05、0.1、0.2、0.5和1C倍率放电的比容量分别为131、127、118、107和98mAh/g。所制备的材料中存在少量杂质,需要改进制备方法以提高材料的纯度和电化学性能。更多还原

【Abstract】 Based on LiH₂PO₄ solubility,a homogeneous mixture as starting materials for LiFePO₄ synthesis was obtained by grinding FeC₂O₄ and LiH₂PO₄ in aqueous medium,and LiFePO₄ was prepared by one-step baking. The experimental results showed that LiFePO₄ synthesized at 650℃had the best discharge capacities which were 131,127,118,107 and 98mAh/g respectively at 0.05,0.1,0.2,0.5 and 1C rates.Impurities existed in as-prepared materials and the method needed to be modified to improve the purity and electrochemical performance of LiFePO₄ materials. _<sub><sub><sub> _______更多还原