| 溶胶-凝胶法制备Li3V2(PO4)3及其性能研究 |
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| 引用本文： | 刘素琴,唐联兴,黄可龙,李世彩.溶胶-凝胶法制备Li3V2(PO4)3及其性能研究[J].无机化学学报,2006,22(6):1067-1071. |
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| 作者姓名： | 刘素琴 唐联兴 黄可龙 李世彩 |
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| 作者单位： | 中南大学化学化工学院,长沙,410083 |
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| 基金项目： | 国家高技术研究发展计划(863计划);高等学校博士学科点专项科研项目 |
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| 摘 要： | 0引言具有类NASICON结构的Li3V2(PO4)3是继过渡金属氧化物LMO后的一种新型的锂离子二次电池正极材料。与目前市场上应用最为广泛的正极材料LiCoO2相比,Li3V2(PO4)3具有超常的稳定性,即使在脱出的Li 与过渡金属原子的物质的量之比大于1的时候仍然具有超乎寻常的稳定性,而通常情况下1mol LiCoO2在脱出0.5mol Li 就会变得不稳定。并且Co是一种战略物资,全球储量十分有限;Co也是一种有毒金属,对于环境污染较为严重。LiNiO2因其合成较为困难而使应用受限,尖晶石LiMn2O4虽然属于环境友好型化合物,但其理论比容量仅为148mAh·g-1,且…
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| 关 键 词： | 锂离子电池 正极材料 Li3V2(PO4)3 溶胶凝胶法 |
| 文章编号： | 1001-4861(2006)06-1067-05 |
| 收稿时间： | 2005-08-29 |
| 修稿时间： | 2006-02-13 |
Lithium-ion Battery Cathode Material Li3V2(PO4)3: Synthesis by Sol-gel Procedure and Performance Studies |
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| LIU Su-Qin,TANG Lian-Xing,HUANG Ke-Long and LI Shi-Cai.Lithium-ion Battery Cathode Material Li3V2(PO4)3: Synthesis by Sol-gel Procedure and Performance Studies[J].Chinese Journal of Inorganic Chemistry,2006,22(6):1067-1071. |
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| Authors: | LIU Su-Qin TANG Lian-Xing HUANG Ke-Long and LI Shi-Cai |
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| Institution: | College of Chemical & Chemical Engineering, Central South University, Changsha 410083,College of Chemical & Chemical Engineering, Central South University, Changsha 410083,College of Chemical & Chemical Engineering, Central South University, Changsha 410083 and College of Chemical & Chemical Engineering, Central South University, Changsha 410083 |
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| Abstract: | Lithium-ion battery cathode material Li3V2(PO4)3 was synthesized by sol-gel method using LiOH·H2O, NH4VO3, H3PO4 and citric acid as the raw materials. The samples were investigated by granularity analysis, scanning electron microscopy and X-ray diffraction. Results showed that sample synthesized by sol-gel procedure had a relatively smaller particle size compared with the products prepared by solid-state reaction, and had an ample surface. Electrochemical properties were investigated by charge/discharge cycle at 0.1 C rate with lithium as the anode. A high discharge specific capacity 122.42 mAh·g-1 was reached at the first cycle, with hardly capacity fading after 20 cycles. |
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| Keywords: | lithium-ion battery cathode materials Li3V2(PO4)3 sol-gel method |
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