| LiFePO4：水热合成及性能研究 |
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| 引用本文： | 张静,刘素琴,黄可龙,赵裕鑫.LiFePO4：水热合成及性能研究[J].无机化学学报,2005,21(3):433-436. |
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| 作者姓名： | 张静 刘素琴 黄可龙 赵裕鑫 |
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| 作者单位： | 中南大学化学化工学院功能材料化学研究所,长沙,410083 |
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| 基金项目： | 家自然科学基金(No.20376086)，高等学校博士学科点专项科研基金(No.20030533001)资助项目 |
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| 摘 要： | LiFePO4是继尖晶石型LiMn2O41]之后的一种新型锂离子电池正极材料,其具有结构稳定,工作电位适中(3.45VvsLi/Li )、可逆容量高、无毒价廉等优点,被认为是极具发展潜力的锂离子电池正极材料2]。有关LiFePO4的结构3]和性能4]研究引人关注。目前,LiFePO4主要是采用高温固相法5]来合成,尽管简单方便,但由于该传统方法的局限性,很难得到纯度高、粒径小、电性能好的LiFePO4。因此人们尝试用微波加热6]、溶胶-凝胶7]、共沉淀8]等制备方法,希望得到理想的LiFePO4材料,但是采用水热法制备LiFePO4鲜见报道。本文采用水热法制备了纯…
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| 关 键 词： | 锂离子电池 正极材料 LiFePO4 |
| 文章编号： | 1001-4861(2005)03-0433-04 |
| 收稿时间： | 8/3/2004 12:00:00 AM |
| 修稿时间： | 2004年8月3日 |
LiFePO4: Hydrothermal Synthesis and Properties |
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| ZHANG Jing,LIU Su-Qin,HUANG Ke-Long and ZHAO Yu-Xin.LiFePO4: Hydrothermal Synthesis and Properties[J].Chinese Journal of Inorganic Chemistry,2005,21(3):433-436. |
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| Authors: | ZHANG Jing LIU Su-Qin HUANG Ke-Long and ZHAO Yu-Xin |
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| Institution: | Institute of Functional Materials & Chemistry, College of Chemistry and Chemical Engineering, Central South University, Changsha 410083,Institute of Functional Materials & Chemistry, College of Chemistry and Chemical Engineering, Central South University, Changsha 410083,Institute of Functional Materials & Chemistry, College of Chemistry and Chemical Engineering, Central South University, Changsha 410083 and Institute of Functional Materials & Chemistry, College of Chemistry and Chemical Engineering, Central South University, Changsha 410083 |
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| Abstract: | Pure olive-type phased LiFePO4 powders were successfully synthesized by hydrothermal processes. The samples were investigated by X-ray diffraction, scanning electron microscopy and so on. Results showed that hydrothermal product were of pure olive-type phase with a relatively smaller particle size and regularer morphology compared with the products prepared by solid-state reaction and ball milling activation approaches. Charge/discharge curves at 0.5 C rate revealed that the hydrothermal products had a first discharge capacity of 124 mAh·g-1, and the capacity fading rate was only 10.7% after 50 cycles. |
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| Keywords: | lithium ion battery cathodes material LiFePO4 |
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