| 溶胶—凝胶—酯化法制备LiMn2O4超细粉及其电化学性质的研究 |
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| 引用本文： | 彭正顺,马洁.溶胶—凝胶—酯化法制备LiMn2O4超细粉及其电化学性质的研究[J].功能材料,1999,30(4):379-381. |
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| 作者姓名： | 彭正顺 马洁 |
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| 作者单位： | 首都师范大学化学系 |
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| 摘 要： | 溶胶－凝胶－酯化方法是通过金属离子与多元有机酯的均一的螯合物。在较低的温度（〈２５０℃）下形成尖晶石型ＬｉＭＮ２Ｏ４正极材料。雇轩的ＬｉＭｎ２Ｏ４具有很好的电化学活性。Ｌｉ＝ＬｉＭｎ２Ｏ４二次电池首次充放电容量超过１３０ｍＡｈ／ｇ，循环１０次以后容量仍然保持在１２０ｍＡｈ／ｇ的较高水平。
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| 关 键 词： | 溶胶－凝胶法 LiMn2O4 锂离子电池 酯化 |
Sol-Gel-Esterification Method for Synthesizing LiMn2O4 Powders as the Cathode Materials for Lithium-ion Cells |
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| PENG Zhengshun,Ma Jie,DI Jing,CHU Yiming.Sol-Gel-Esterification Method for Synthesizing LiMn2O4 Powders as the Cathode Materials for Lithium-ion Cells[J].Journal of Functional Materials,1999,30(4):379-381. |
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| Authors: | PENG Zhengshun Ma Jie DI Jing CHU Yiming |
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| Affiliation: | PENG Zhengshun,Ma Jie,DI Jing,CHU Yiming Department of Chemistry,Capital Normal Universiity,Beijing,100037,China |
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| Abstract: | LiMn2O4 powders have been prepared by a sol-gel-esterification using acetate salts as precursors,citric acid and ethylene glycol as chelating agents.The process consisted of thermally chelating,drying,decomposing and reacting,forming a well characterized powder.Based on this process,spinel LiMn2O4 was synthesized by calcining the appropriate polymeric precursors in air at 250 for several hours.The primary particals with the 1050nm diameter were investigated by SEM and TEM technology.The LiMn2O4 offered the electrochemical capacity of more than 120130mAh/g at a current density 0.5mA/cm2. |
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| Keywords: | sol-gel technique LiMn2O4 lithium-ion cell |
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