| 无模板水热合成LiFePO4/C的低温性能 |
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| 引用本文： | 潘琳,欧秀芹,宋清竹,王作瑞.无模板水热合成LiFePO4/C的低温性能[J].电池,2011,41(4):184-186. |
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| 作者姓名： | 潘琳 欧秀芹 宋清竹 王作瑞 |
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| 作者单位： | 河北工业大学能源与环保材料研究所,天津,300130 |
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| 基金项目： | 河北省科技厅自然科学基金资助项目(E2009000036) |
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| 摘 要： | 以LiOH、H3PO4和FeSO4为原料,用无模板水热法合成LiFePO4,与葡萄糖混合后热处理,得到正极材料LiFePO4/C.XRD、SEM测试结果表明:在无模板剂或表面活性剂的条件下,水热合成法可制得纯相、颗粒细小且分散良好的LiFePO4晶体.产物在2.3～4.2 V循环,23℃时的0.20 C首次放电比容量为...
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| 关 键 词： | 锂离子电池 磷酸铁锂(LiFePO4) 低温性能 水热合成法 |
Low temperature performance of template-free hydrothermal synthesized LiFePO_4/C |
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| PAN Lin,OU Xiu-qin,SONG Qing-zhu,WANG Zuo-rui.Low temperature performance of template-free hydrothermal synthesized LiFePO_4/C[J].Battery Bimonthly,2011,41(4):184-186. |
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| Authors: | PAN Lin OU Xiu-qin SONG Qing-zhu WANG Zuo-rui |
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| Affiliation: | PAN Lin,OU Xiu-qin,SONG Qing-zhu,WANG Zuo-rui(Institute of Power Source & Ecomaterials Science,Hebei University of Technology,Tianjin,300130,China) |
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| Abstract: | LiFePO4 was prepared by template-free hydrothermal synthesis using LiOH,H3PO4 and FeSO4 as raw materials,then mixed with glucose to obtain cathode material LiFePO4/C by heat treating.The results of SEM and XRD tests showed that phase-pure LiFePO4 with fine grain size and good dispersion could be obtained by hydrothermal synthesis without any template or surfactant.When the product cycled in 2.3～4.2 V,the 0.20 C initial specific discharge capacity was 151.5 mAh/g at 23 ℃,the 0.20 C and 0.50 C initial specific discharge capacity at-20 ℃ was 103.5 mAh/g and 84.5 mAh/g,respectively,which was 68.3% and 55.8% of the 0.20 C one(at 23 ℃).The fine low-temperature performance could be attributed to the one-dimensional nanometer structure of the sample along the Li+ diffusion path. |
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| Keywords: | Li-ion battery lithium iron phosphate(LiFePO4) low-temperature performance hydrothermal synthesis |
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